Area Forecast Matrices
Issued by NWS St. Louis, MO
Issued by NWS St. Louis, MO
177 FOUS53 KLSX 151901 AFMLSX Area Forecast Matrices National Weather Service Saint Louis MO 200 PM CDT Sat Aug 15 2026 ILZ100-101-MOZ061-063-064-152100- Madison IL-Saint Clair IL-Saint Charles MO-Saint Louis MO- Saint Louis City MO- Including the cities of Alton, Edwardsville, Belleville, Cahokia, Saint Charles, and Saint Louis 200 PM CDT Sat Aug 15 2026 Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 94 76 94 71 86 Temp 93 90 82 79 78 77 86 92 94 89 80 76 73 71 78 83 85 82 Dewpt 76 78 75 73 70 70 75 76 76 77 76 75 73 71 71 71 70 69 RH 58 68 79 82 76 79 70 60 56 68 88 97100100 79 67 61 65 Wind dir SW S S SW SW SW SW W NW NW N N NW N N N N N Wind spd 5 2 2 3 4 4 5 6 6 6 5 4 4 4 5 5 6 4 Clouds SC FW SC SC B1 B1 SC SC SC FW SC SC B1 B1 SC SC FW SC PoP 12hr 0 10 20 30 5 QPF 12hr 0 0 0 0.01-0.12 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S S S Tstms S S S S S Heat index 106104 88 81 95105107101 83 87 90 85 Max heat 105 112 103 88 110 113 100 91 94 Extreme Heat W W W W W W W W W W Date Tue 08/18/26 Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 66 89 71 89 67 82 64 83 Temp 71 67 86 86 76 72 87 83 72 68 80 78 69 65 81 79 Dewpt 68 66 69 70 68 69 73 73 70 66 67 66 64 63 66 66 PWind dir NE S SE N NE NE E E Wind char LT LT LT LT LT LT LT LT Avg clouds SC FW FW FW FW SC B1 B1 SC SC B1 B1 SC SC SC SC PoP 12hr 0 0 20 30 20 20 20 10 Rain shwrs S C S S S S S S Tstms S S S S $$ MOZ049-050-152100- Osage MO-Callaway MO- Including the city of Fulton 200 PM CDT Sat Aug 15 2026 Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 93 74 92 68 84 Temp 93 89 80 78 76 75 83 90 90 84 77 74 70 68 75 81 84 80 Dewpt 73 76 72 70 70 70 73 75 76 76 75 73 70 68 69 68 68 68 RH 52 66 77 76 82 84 72 62 64 77 94 97100100 82 65 59 67 Wind dir SW SW S SW SW SW W NW NW N N N N N N N N N Wind spd 6 2 2 3 4 4 5 6 6 6 5 3 3 3 3 4 4 2 Clouds SC SC SC B1 B1 SC SC SC SC SC B1 SC SC SC FW FW FW SC PoP 12hr 5 10 20 30 0 QPF 12hr 0 0 0 0.00-0.08 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S C S Tstms S S S C S Heat index 102100 83 90100102 92 83 87 82 Max heat 101 107 99 84 105 107 94 88 91 Extreme Heat W W W W W W W W W W Date Tue 08/18/26 Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 65 90 71 88 66 82 64 84 Temp 69 66 86 86 76 72 85 82 71 67 79 78 68 65 81 79 Dewpt 66 65 69 71 68 68 72 72 69 66 67 66 64 63 67 67 PWind dir E S SE N NE E E SE Wind char LT LT LT LT LT LT LT LT Avg clouds FW FW FW FW FW SC SC SC SC B1 B1 SC SC FW SC SC PoP 12hr 0 0 30 30 30 20 20 10 Rain shwrs C C C S S S S Tstms S S S S S S S $$ MOZ042-152100- Audrain MO- Including the city of Mexico 200 PM CDT Sat Aug 15 2026 Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 89 73 87 66 81 Temp 88 87 78 78 75 74 81 86 86 81 74 71 68 66 74 79 81 79 Dewpt 76 78 74 71 70 70 74 76 76 75 73 70 68 66 68 67 67 68 RH 68 75 88 79 84 87 79 72 72 82 97 97100100 82 67 63 69 Wind dir SW SW S SW W SW NW NW NW N N N N N N N N N Wind spd 8 1 2 4 4 4 6 6 6 9 6 3 3 3 4 4 4 1 Clouds B2 B1 B1 B1 B1 B2 SC B1 SC SC B1 FW FW SC FW FW FW FW PoP 12hr 5 20 30 20 0 QPF 12hr 0 0 0.00-0.08 0.00-0.05 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S S S Tstms S S S S S Heat index 99 99 86 95 96 87 83 80 Max heat 96 105 97 99 100 83 85 Heat Y Y Y Y Y Y Y Y Y Y Date Tue 08/18/26 Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 63 86 69 83 63 79 62 81 Temp 67 64 83 85 74 70 81 79 68 65 77 77 66 63 78 78 Dewpt 64 64 69 71 68 67 72 71 68 64 66 66 62 62 67 68 PWind dir E S SE NE NE E E SE Wind char LT LT LT GN LT LT LT LT Avg clouds FW FW FW SC SC SC B1 B1 SC SC B1 SC SC SC SC SC PoP 12hr 0 0 40 30 30 10 20 10 Rain shwrs C C C S S S Tstms C S S S $$ MOZ041-047-048-152100- Boone MO-Moniteau MO-Cole MO- Including the cities of Columbia and Jefferson City 200 PM CDT Sat Aug 15 2026 Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 94 76 92 69 85 Temp 93 90 81 79 77 76 84 90 90 84 77 74 71 69 75 82 84 81 Dewpt 74 76 73 71 70 71 73 75 76 75 75 73 71 69 69 68 68 68 RH 54 64 77 77 79 85 70 62 64 74 94 97100100 82 63 59 65 Wind dir SW SW S SW SW SW NW NW NW N N N N N N N N N Wind spd 6 2 2 3 4 3 5 5 6 6 4 3 2 2 3 3 4 2 Wind gust 14 Clouds SC SC SC B1 B1 B1 SC B1 SC SC B1 SC SC SC FW FW FW SC PoP 12hr 5 10 30 20 0 QPF 12hr 0 0 0.00-0.06 0.00-0.08 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S S S Tstms S S S S S Heat index 103101 86 80 90100102 92 84 88 84 Max heat 101 109 102 85 105 109 94 89 91 Extreme Heat W W W W W W W W W W Date Tue 08/18/26 Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 66 91 73 88 67 83 65 86 Temp 70 67 87 88 77 73 86 83 72 68 79 79 69 66 82 81 Dewpt 66 65 69 71 69 68 72 72 69 66 67 67 64 64 67 68 PWind dir E S SE NE NE E E SE Wind char LT LT LT LT LT LT LT LT Avg clouds FW FW FW FW SC SC SC SC SC B1 B1 SC SC SC SC SC PoP 12hr 0 0 30 20 30 20 20 10 Rain shwrs S C C C S S S Tstms S C S S S S S $$ ILZ095>097-MOZ018-019-026-027-152100- Adams IL-Brown IL-Pike IL-Knox MO-Lewis MO-Shelby MO-Marion MO- Including the cities of Quincy, Mount Sterling, Pittsfield, and Hannibal 200 PM CDT Sat Aug 15 2026 Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 88 74 86 66 82 Temp 86 85 78 77 75 74 80 84 85 81 74 71 68 66 74 80 82 80 Dewpt 77 79 76 75 73 72 75 77 77 75 73 70 67 66 68 68 67 69 RH 75 82 94 94 94 93 85 80 77 82 97 97 97100 82 67 61 69 Wind dir SW SW SE SW NW W NW NW NW NW N N N N N N N N Wind spd 6 2 1 2 3 3 4 5 6 8 5 3 3 3 3 4 4 1 Wind gust 17 16 Clouds B1 B1 B2 B2 B2 B1 B1 B1 SC SC SC FW FW FW FW FW FW FW PoP 12hr 10 50 30 10 0 QPF 12hr 0 0.00-0.18 0.00-0.25 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C S S S S Tstms S S C C S S S S Heat index 97 98 84 94 96 87 81 85 82 Max heat 96 106 100 103 105 89 86 88 Date Tue 08/18/26 Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 64 86 69 82 63 79 62 81 Temp 67 65 83 84 74 70 79 78 68 64 76 76 66 63 78 78 Dewpt 65 64 70 72 69 68 72 71 67 63 66 67 63 62 67 68 PWind dir S S SE N NE NE E SE Wind char LT LT LT LT LT LT LT LT Avg clouds FW FW SC SC SC B1 B1 B1 SC SC B1 SC SC SC SC SC PoP 12hr 0 0 60 40 10 10 10 10 Rain shwrs C L C S S S Tstms C C S S $$ MOZ034-152100- Monroe MO- 200 PM CDT Sat Aug 15 2026 Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 88 73 86 65 81 Temp 87 87 79 78 75 74 80 85 85 81 74 71 67 66 74 79 81 79 Dewpt 76 78 75 72 71 71 73 76 76 75 73 70 67 65 67 67 66 68 RH 70 75 88 82 87 90 79 75 75 82 97 97100 97 79 67 60 69 Wind dir SW SW SE W W W NW NW NW N N N N N N N N N Wind spd 8 1 1 3 4 3 4 5 6 8 5 3 3 3 3 3 3 1 Clouds B2 B1 B2 B2 B1 B1 B1 SC SC SC B1 FW FW FW FW FW FW FW PoP 12hr 5 40 30 20 0 QPF 12hr 0 0.00-0.06 0.00-0.07 0.01 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C C S S Tstms S C C C S S Heat index 97100 81 85 94 95 87 83 80 Max heat 96 105 101 88 96 98 89 83 85 Heat Y Y Date Tue 08/18/26 Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 64 86 69 82 63 79 62 81 Temp 68 65 83 85 75 70 80 79 68 65 76 77 66 63 79 79 Dewpt 64 63 69 71 68 68 72 71 67 64 66 66 63 62 67 68 PWind dir E S SE NE NE E E SE Wind char LT LT LT LT LT LT LT LT Avg clouds FW FW SC SC SC SC B1 B1 SC B1 B1 SC SC SC SC SC PoP 12hr 0 0 40 30 20 10 10 20 Rain shwrs S C C S S S Tstms S C S S $$ MOZ035-036-152100- Ralls MO-Pike MO- Including the city of Bowling Green 200 PM CDT Sat Aug 15 2026 Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 90 74 88 67 83 Temp 88 87 79 78 76 75 82 87 87 83 75 72 69 67 75 80 83 80 Dewpt 76 78 76 73 72 72 74 76 76 76 74 71 69 67 68 67 67 68 RH 68 75 91 85 87 90 77 70 70 80 97 97100100 79 65 59 67 Wind dir SW SW S SW W SW NW NW NW N N NW N N N N N N Wind spd 6 1 1 2 3 3 4 5 5 6 4 3 3 3 3 4 4 1 Wind gust 17 17 14 Clouds B2 B1 B1 B1 B2 B1 SC B1 SC SC B1 SC FW FW FW FW FW FW PoP 12hr 5 30 30 20 0 QPF 12hr 0 0.01 0.00-0.14 0.00-0.05 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C S S S S Tstms C C S S S S Heat index 99101 82 88 97 98 90 83 85 83 Max heat 97 108 102 88 105 105 96 87 88 Heat Y Y Y Y Y Y Y Y Y Y Date Tue 08/18/26 Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 64 87 70 84 64 80 63 82 Temp 68 65 84 86 75 71 82 80 69 66 77 77 67 63 79 79 Dewpt 65 64 69 71 68 68 72 71 67 64 66 66 63 62 66 67 PWind dir N S SE N NE NE E SE Wind char LT LT LT LT LT LT LT LT Avg clouds FW FW FW SC SC B1 B1 B1 SC SC B1 SC SC SC SC SC PoP 12hr 0 0 30 40 20 10 20 20 Rain shwrs C C S S S S Tstms C S S $$ ILZ069-070-074-152100- Clinton IL-Marion IL-Washington IL- Including the cities of Centralia and Salem 200 PM CDT Sat Aug 15 2026 Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 93 75 94 71 86 Temp 93 89 80 79 77 76 86 92 94 89 79 76 73 72 78 83 85 81 Dewpt 77 78 75 72 70 70 75 76 76 77 76 75 73 72 72 72 70 70 RH 60 70 85 79 79 82 70 60 56 68 91 97100100 82 70 61 69 Wind dir SW S S SW SW SW SW W NW NW N N NW NW N N N N Wind spd 4 1 2 3 4 3 3 5 5 3 3 2 3 3 4 5 5 3 Clouds SC FW FW FW SC SC SC SC SC SC FW SC SC B1 SC SC FW FW PoP 12hr 0 10 20 30 5 QPF 12hr 0 0 0 0.04-0.13 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S S C Tstms S S S S C Heat index 107104 85 95105107101 89 90 85 Max heat 105 113 103 90 109 112 102 87 91 93 Extreme Heat W W W W W W W W W W Date Tue 08/18/26 Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 65 88 70 89 66 82 63 83 Temp 70 66 85 84 74 71 87 83 72 68 80 78 67 63 80 78 Dewpt 69 66 68 70 68 69 73 73 70 66 66 66 64 63 65 66 PWind dir N S S W N NE NE NE Wind char LT LT LT LT LT LT LT LT Avg clouds FW FW FW FW FW SC B1 SC SC SC B1 B1 SC SC SC SC PoP 12hr 0 0 10 30 30 20 10 20 Rain shwrs C S S C S S S S Tstms S S S S S S $$ MOZ074-084-085-099-152100- Saint Francois MO-Iron MO-Madison MO-Reynolds MO- Including the city of Farmington 200 PM CDT Sat Aug 15 2026 Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 98 74 98 71 87 Temp 97 91 81 78 76 75 87 96 97 90 80 76 73 72 78 84 87 82 Dewpt 69 70 68 67 68 69 72 72 72 73 73 73 73 71 72 72 72 71 RH 40 50 65 69 76 82 61 46 45 58 79 90100 97 82 67 61 69 Wind dir SW S S SW SW SW W W W NW N N N N N N N N Wind spd 4 2 2 2 3 2 3 4 3 2 2 2 2 3 3 3 3 2 Wind gust 14 13 16 13 14 14 12 13 13 13 Clouds CL CL FW FW SC SC SC SC FW SC SC SC B1 B1 B1 SC SC SC PoP 12hr 0 0 20 30 20 QPF 12hr 0 0 0.00-0.05 0.00-0.42 0.00-0.35 Snow 12hr 00-00 00-00 00-00 Rain shwrs S C C S C S S Tstms S C C S C Heat index 104 98 83 94104106 98 83 90 93 86 Max heat 105 110 97 83 110 112 98 98 101 Extreme Heat W W W W W W W W W W Date Tue 08/18/26 Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 66 91 70 93 68 84 64 85 Temp 71 66 88 86 75 71 91 86 73 69 82 79 69 65 82 80 Dewpt 68 66 70 71 69 68 71 73 70 67 69 68 65 63 67 68 PWind dir NE S S W NE NE NE E Wind char LT LT LT LT LT LT LT LT Avg clouds SC FW FW FW FW SC SC FW SC B1 B1 B1 SC SC SC SC PoP 12hr 5 5 10 20 40 30 20 10 Rain shwrs S C S C C S S S S S Tstms S C S C S S S S S $$ MOZ051-060-152100- Montgomery MO-Warren MO- 200 PM CDT Sat Aug 15 2026 Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 92 73 91 67 84 Temp 92 88 80 77 75 74 82 89 90 84 76 73 70 68 75 81 83 79 Dewpt 75 78 75 72 70 71 75 76 77 76 75 73 70 68 70 69 69 69 RH 58 72 85 85 84 90 79 66 66 77 97100100100 84 67 63 72 Wind dir SW SW S SW W SW W NW NW NW N N N N N N N N Wind spd 4 0 1 2 3 3 4 4 5 4 4 3 2 3 3 3 3 1 Wind gust 14 14 Clouds SC SC SC B1 B1 B1 SC SC SC SC SC SC SC SC FW FW FW SC PoP 12hr 0 20 20 30 0 QPF 12hr 0 0 0 0.01-0.09 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S C Tstms S S S C Heat index 103102 82 89101103 93 84 87 81 Max heat 103 110 102 84 107 112 94 88 91 Extreme Heat W W W W W W W W W W Date Tue 08/18/26 Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 63 88 69 86 64 81 62 83 Temp 68 64 85 85 75 70 84 81 70 66 78 76 67 63 80 78 Dewpt 66 64 70 72 68 68 73 72 69 65 67 66 64 62 67 68 PWind dir NE S SE N NE NE E SE Wind char LT LT LT LT LT LT LT LT Avg clouds FW FW FW SC SC SC SC B1 SC SC B1 B1 SC SC SC SC PoP 12hr 0 0 20 30 20 20 20 10 Rain shwrs S C S S S Tstms S S $$ MOZ052-152100- Lincoln MO- 200 PM CDT Sat Aug 15 2026 Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 92 74 91 68 84 Temp 91 89 80 79 76 76 84 90 90 85 77 74 71 69 76 82 84 80 Dewpt 76 78 76 73 71 71 75 76 77 76 75 73 70 68 70 69 68 68 RH 62 70 88 82 85 85 74 64 66 75 94 97 97 97 82 65 59 67 Wind dir SW SW S SW W SW W NW NW N N N N N N N N N Wind spd 4 0 1 2 3 2 3 5 5 5 4 3 3 3 3 3 3 1 Wind gust 14 Clouds B1 SC SC B1 B1 SC SC SC SC SC SC SC SC FW FW FW FW SC PoP 12hr 0 20 20 30 0 QPF 12hr 0 0 0 0.01 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S S S C Tstms S S S S S C Heat index 103103 86 80 91102104 94 86 87 83 Max heat 102 107 102 87 105 109 96 88 90 Heat Y Y Y Y Y Y Y Y Y Y Date Tue 08/18/26 Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 64 88 70 86 65 81 63 83 Temp 69 65 85 86 75 71 84 81 70 66 79 77 67 63 80 79 Dewpt 66 65 70 71 68 68 73 72 69 65 67 66 64 62 67 67 PWind dir NE S SE N NE NE E SE Wind char LT LT LT LT LT LT LT LT Avg clouds FW FW FW SC SC B1 B1 B1 SC SC B1 SC SC SC SC SC PoP 12hr 0 0 30 30 20 20 20 20 Rain shwrs C C S S S S Tstms C S $$ ILZ058-059-098-099-152100- Greene IL-Macoupin IL-Calhoun IL-Jersey IL- 200 PM CDT Sat Aug 15 2026 Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 90 74 90 67 83 Temp 89 87 79 78 76 75 84 89 90 84 76 73 70 68 77 82 83 80 Dewpt 76 78 75 74 72 72 74 76 76 76 75 73 70 68 69 68 67 67 RH 66 75 88 88 87 90 72 66 64 77 97100100100 76 63 59 65 Wind dir SW SW S S W S SW NW NW NW NW N NW N N N N N Wind spd 6 2 2 2 3 3 4 6 6 8 5 4 4 4 4 5 5 3 Clouds B1 SC SC B1 B1 B1 B1 B1 B1 SC SC SC SC FW FW FW FW FW PoP 12hr 5 20 20 30 0 QPF 12hr 0 0 0.00-0.18 0.00-0.25 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S S C C Tstms S S S S C C Heat index 101100 81 91100101 93 85 86 82 Max heat 99 107 103 87 105 109 96 88 89 Heat Y Y Y Y Y Y Y Y Y Y Date Tue 08/18/26 Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 63 87 69 85 63 80 61 81 Temp 68 64 84 84 74 70 84 80 69 65 78 77 66 62 79 78 Dewpt 66 63 67 70 67 68 71 70 68 64 64 64 62 61 64 65 PWind dir NE S SE N NE NE E E Wind char LT LT LT LT LT LT LT LT Avg clouds FW FW FW FW SC B1 B1 B1 SC SC B1 SC SC SC SC SC PoP 12hr 0 0 30 30 30 20 10 20 Rain shwrs C C S S C S S S Tstms C S S S $$ ILZ060-064-065-152100- Montgomery IL-Bond IL-Fayette IL- Including the cities of Litchfield and Vandalia 200 PM CDT Sat Aug 15 2026 Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 90 74 91 69 84 Temp 90 87 79 78 76 75 85 90 90 85 77 74 72 70 77 82 84 80 Dewpt 77 78 76 73 71 71 75 76 76 77 75 74 72 70 70 69 68 68 RH 66 75 91 85 85 87 72 64 64 77 94100100100 79 65 59 67 Wind dir SW S S SW SW W SW W NW NW NW N NW NW N N N N Wind spd 5 2 2 2 3 3 4 6 6 5 4 3 3 4 4 5 6 3 Clouds B1 SC SC SC B1 B1 B1 SC B1 SC FW SC SC SC FW SC FW FW PoP 12hr 5 20 20 30 5 QPF 12hr 0 0 0.00-0.05 0.02-0.22 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S S C C S S Tstms S S S S C C S S Heat index 102101 82 93101103 95 86 87 82 Max heat 100 109 103 90 106 109 100 87 89 90 Heat Y Y Y Y Y Y Y Y Y Y Date Tue 08/18/26 Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 63 86 68 86 64 80 61 81 Temp 68 64 84 83 73 70 84 81 70 65 78 76 66 62 79 78 Dewpt 67 64 67 69 67 68 72 71 68 64 64 64 63 61 64 65 PWind dir N S S W N NE NE E Wind char LT LT LT LT LT LT LT LT Avg clouds FW FW FW FW SC SC B1 B1 SC SC B1 B1 SC SC SC SC PoP 12hr 0 0 30 30 30 20 10 20 Rain shwrs C C C S C S S Tstms C S S S $$ ILZ079-MOZ075-152100- Randolph IL-Sainte Genevieve MO- Including the cities of Chester and Sparta 200 PM CDT Sat Aug 15 2026 Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 97 74 97 70 86 Temp 96 91 81 79 77 75 87 94 96 90 80 76 73 72 78 83 85 81 Dewpt 75 76 72 69 68 69 75 75 75 76 75 75 73 71 73 73 73 71 RH 51 62 74 72 74 82 68 54 51 64 85 97100 97 85 72 67 72 Wind dir SW S S SW SW SW W W NW NW N N NW NW N N N N Wind spd 4 3 4 5 5 4 4 5 4 3 4 4 4 5 5 5 5 3 Wind gust 16 Clouds CL CL FW FW SC SC SC SC SC FW SC SC B1 B2 SC SC FW FW PoP 12hr 0 5 20 40 10 QPF 12hr 0 0 0.00-0.06 0.03-0.12 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S S C S S Tstms S S S S C Heat index 109104 86 96106109103 86 89 92 86 Max heat 109 113 100 84 110 114 100 91 95 Extreme Heat W W W W W W W W W W Date Tue 08/18/26 Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 65 89 70 91 67 83 63 83 Temp 71 66 86 85 75 71 89 85 73 69 80 78 69 64 81 78 Dewpt 68 66 70 72 69 68 74 74 71 67 69 68 65 63 68 68 PWind dir NE S S W N NE NE NE Wind char LT LT LT LT LT LT LT LT Avg clouds SC FW FW FW FW SC SC SC SC SC B1 B1 SC SC SC SC PoP 12hr 0 0 10 30 40 30 20 20 Rain shwrs C S S C C S S S S Tstms S S S S S S S S $$ MOZ059-062-072-073-152100- Gasconade MO-Franklin MO-Crawford MO-Washington MO- Including the cities of Washington, Union, and Sullivan 200 PM CDT Sat Aug 15 2026 Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 96 74 96 69 85 Temp 96 91 81 78 77 75 87 93 95 88 78 75 72 70 77 83 85 80 Dewpt 71 73 70 68 68 69 73 74 74 75 75 74 72 70 72 71 70 69 RH 45 56 69 71 74 82 63 54 51 66 91 97100100 85 67 61 69 Wind dir SW SW S SW SW SW W W NW NW N N NW N N N N N Wind spd 4 1 1 2 4 3 4 5 5 3 3 2 2 2 3 3 3 1 Wind gust 14 11 13 14 13 14 Clouds FW FW SC SC SC SC SC SC SC SC SC SC B1 B1 SC SC FW SC PoP 12hr 0 10 20 40 5 QPF 12hr 0 0 0.00-0.12 0.02-0.12 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S S C Tstms S S S S C Heat index 105100 84 94103106 97 87 90 82 Max heat 105 110 100 83 109 112 96 92 94 Extreme Heat W W W W W W W W W W Date Tue 08/18/26 Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 65 91 71 91 66 82 64 84 Temp 69 66 88 86 76 72 89 84 72 67 80 77 68 64 82 78 Dewpt 67 65 70 71 68 68 72 73 70 67 68 67 64 63 67 68 PWind dir NE S S NW NE NE E E Wind char LT LT LT LT LT LT LT LT Avg clouds SC FW FW FW FW SC SC SC SC B1 B1 B1 SC SC SC SC PoP 12hr 0 0 20 20 30 20 20 10 Rain shwrs S S S S C S S S S S Tstms S S S S S S S S S $$ ILZ102-MOZ065-152100- Monroe IL-Jefferson MO- 200 PM CDT Sat Aug 15 2026 Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 97 75 97 70 86 Temp 97 92 81 79 77 76 87 94 96 90 80 76 73 71 78 83 86 81 Dewpt 74 76 73 69 68 69 75 76 76 76 76 75 73 71 73 73 72 70 RH 48 60 77 72 74 79 68 56 53 64 88 97100100 85 72 63 69 Wind dir SW S S SW SW SW W W NW NW N N NW NW N N N N Wind spd 4 2 2 3 4 4 4 4 4 4 3 3 3 3 4 4 4 2 Wind gust 14 Clouds FW FW FW SC SC B1 SC B1 SC SC SC B1 B1 B2 SC SC FW FW PoP 12hr 0 10 20 40 5 QPF 12hr 0 0 0 0.05-0.11 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S S S C Tstms S S S S C Heat index 109105 86 97107110103 84 89 92 85 Max heat 107 114 101 84 110 114 99 92 94 Extreme Heat W W W W W W W W W W Date Tue 08/18/26 Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 65 90 71 91 67 82 63 84 Temp 70 66 87 86 75 72 89 84 72 68 80 78 68 64 81 78 Dewpt 68 66 71 72 68 68 74 74 71 67 69 68 64 63 68 68 PWind dir NE S S NW NE NE E E Wind char LT LT LT LT LT LT LT LT Avg clouds SC FW FW FW FW SC B1 SC SC SC B1 B1 SC SC SC SC PoP 12hr 0 0 20 30 40 20 20 10 Rain shwrs S C S S C S S S S Tstms S S S S S S S $$