Point Forecast Matrices
Issued by NWS Des Moines, IA
Issued by NWS Des Moines, IA
833 FOUS53 KDMX 180930 PFMDMX Point Forecast Matrices National Weather Service Des Moines IA 430 AM CDT Mon Aug 18 2025 IAZ060-182100- Des Moines-Polk IA 41.54N 93.65W Elev. 924 ft 430 AM CDT Mon Aug 18 2025 Date Mon 08/18/25 Tue 08/19/25 Wed 08/20/25 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 72 88 67 83 Temp 76 82 90 92 88 80 77 73 72 79 85 88 85 77 73 69 68 74 80 83 80 Dewpt 74 74 75 75 76 74 74 72 71 73 74 73 72 72 70 68 67 67 67 67 66 RH 94 77 62 58 68 82 90 97 97 82 70 61 65 85 90 97 97 79 65 59 62 Wind dir SW SW SW SW W S NW W NW N N N N NE NE NE NE NE NE NE NE Wind spd 8 9 9 8 5 4 3 3 4 5 5 6 6 5 5 4 5 5 8 8 6 Clouds SC B1 SC SC SC SC B1 SC B1 SC SC SC SC FW FW FW FW FW FW FW FW PoP 12hr 30 30 10 10 5 QPF 12hr 0.08 0.04 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C S S S C S Tstms S S S S S S Heat index 89101103 98 93 96 90 Max heat 102 105 96 94 98 87 83 87 Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 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 61 82 61 85 62 80 55 75 Temp 68 63 78 78 66 62 81 80 68 63 78 76 62 56 71 71 Dewpt 65 62 63 63 63 61 65 67 64 60 58 58 57 53 53 54 PWind dir E E SE W N NW N N Wind char LT LT LT LT LT LT LT LT Avg clouds FW FW FW CL CL FW SC SC SC FW FW FW FW FW FW FW PoP 12hr 0 0 0 5 20 5 10 5 Rain shwrs S Tstms S $$ IAZ039-182100- Waterloo/Cedar Falls-Black Hawk IA 42.55N 92.40W Elev. 865 ft 430 AM CDT Mon Aug 18 2025 Date Mon 08/18/25 Tue 08/19/25 Wed 08/20/25 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 87 71 84 63 80 Temp 73 77 83 84 83 76 74 72 71 78 83 84 80 72 69 65 64 72 77 78 76 Dewpt 73 75 76 76 76 75 72 71 70 72 72 71 71 69 67 65 64 67 66 65 65 RH 100 94 80 77 80 97 93 97 97 82 70 65 74 90 93100100 84 69 64 69 Wind dir S S S SW SW S NW NW NW N N N N N N N N NE NE NE NE Wind spd 9 10 10 10 5 4 3 3 4 5 8 9 8 5 5 5 5 6 8 8 5 Clouds B2 OV B1 B1 SC SC SC B1 B1 B1 SC SC FW FW FW FW FW FW FW FW CL PoP 12hr 60 30 10 0 0 QPF 12hr 0.60 0.03 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C C C C C S S S Tstms C S C C C S S S Heat index 91 93 91 88 89 Max heat 91 97 90 89 90 Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 59 79 60 81 59 76 52 70 Temp 63 60 76 76 63 61 78 76 65 60 74 70 58 53 68 66 Dewpt 63 59 63 64 62 60 66 67 63 58 58 57 53 51 53 54 PWind dir E E S SW NW NW NW NW Wind char LT LT LT LT LT GN LT LT Avg clouds FW FW FW CL CL SC SC SC SC FW FW FW CL FW FW FW PoP 12hr 0 0 0 5 10 10 5 5 $$ IAZ048-182100- Ames-Story IA 41.99N 93.62W Elev. 936 ft 430 AM CDT Mon Aug 18 2025 Date Mon 08/18/25 Tue 08/19/25 Wed 08/20/25 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 72 86 65 82 Temp 74 79 86 88 85 78 74 73 72 79 84 86 83 74 70 67 65 73 79 81 78 Dewpt 74 75 76 77 77 75 74 72 71 74 74 74 73 72 70 67 65 67 67 68 67 RH 100 88 72 70 77 91100 97 97 85 72 68 72 93100100100 81 67 65 69 Wind dir S S SW SW SW S NW NW NW NE N N N N NE NE NE NE NE NE NE Wind spd 6 9 9 8 5 3 2 2 3 5 5 6 5 5 4 3 4 5 6 6 5 Clouds B2 B1 SC FW SC B1 SC SC SC SC SC FW FW FW FW FW FW FW FW CL FW PoP 12hr 40 20 10 5 5 QPF 12hr 0.07 0.01 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C S S S S S S Tstms S S S S S S S Heat index 97101 96 91 94 89 Max heat 99 105 93 93 96 86 85 Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 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 60 81 59 83 60 78 52 73 Temp 66 61 77 77 63 60 79 78 66 61 76 73 59 53 69 68 Dewpt 65 61 64 65 63 60 66 68 63 59 59 59 55 52 54 55 PWind dir E E SE W N NW N NW Wind char LT LT LT LT LT LT LT LT Avg clouds FW FW FW CL CL SC SC SC SC FW FW FW FW FW FW FW PoP 12hr 0 0 0 5 20 10 10 5 Rain shwrs S $$ IAZ004-182100- Estherville-Emmet IA 43.40N 94.75W Elev. 1315 ft 430 AM CDT Mon Aug 18 2025 Date Mon 08/18/25 Tue 08/19/25 Wed 08/20/25 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 87 69 84 62 81 Temp 72 77 82 86 84 74 71 69 69 75 81 84 81 71 67 64 63 72 77 80 77 Dewpt 72 73 74 74 75 73 70 69 68 70 70 70 71 68 66 64 63 66 66 66 66 RH 100 87 77 68 74 97 97100 97 84 69 63 72 90 97100100 81 69 62 69 Wind dir S SW SW W NW N N N N N N N N NE NE NE NE NE E E E Wind spd 12 11 10 8 5 4 4 5 5 6 8 8 6 5 4 3 3 4 5 6 5 Clouds B2 B1 SC FW FW FW FW SC B1 SC FW FW FW FW FW FW SC FW FW FW FW PoP 12hr 50 10 5 5 0 QPF 12hr 0.06 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C Tstms C Heat index 88 94 92 Max heat 88 96 89 85 89 82 Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 59 81 61 80 56 74 51 71 Temp 63 61 77 77 64 63 76 75 61 58 71 70 55 52 66 67 Dewpt 62 60 65 66 62 61 66 64 58 53 54 55 51 49 51 52 PWind dir SE S S NW NW NW NW N Wind char LT LT LT LT LT GN LT LT Avg clouds FW FW FW CL FW SC SC SC FW FW FW FW FW FW FW FW PoP 12hr 0 0 10 20 20 5 5 5 Rain shwrs S S S Tstms S $$ IAZ035-182100- Fort Dodge-Webster IA 42.55N 94.18W Elev. 1165 ft 430 AM CDT Mon Aug 18 2025 Date Mon 08/18/25 Tue 08/19/25 Wed 08/20/25 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 71 86 64 82 Temp 73 77 84 87 86 77 75 72 72 78 84 85 82 72 68 66 64 73 79 80 78 Dewpt 73 74 76 77 77 75 73 71 71 73 73 73 72 70 68 66 64 67 67 67 68 RH 100 90 77 72 75 94 94 97 97 85 70 67 72 93100100100 81 67 65 71 Wind dir S S SW W W NE N N N N N N N NE NE NE NE NE NE NE NE Wind spd 5 8 9 8 4 3 3 3 4 5 5 8 6 5 3 3 3 5 5 6 5 Clouds OV B2 B1 SC SC B1 SC SC B1 B1 FW FW FW FW FW FW FW FW FW FW FW PoP 12hr 50 10 10 5 0 QPF 12hr 0.35 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C S S Tstms C S S Heat index 93 98 97 90 91 87 Max heat 93 100 94 90 92 82 84 Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 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 59 81 60 82 57 76 51 72 Temp 64 61 78 77 63 61 79 77 63 59 74 71 57 52 68 68 Dewpt 63 60 65 66 62 61 67 67 61 56 58 59 53 51 53 56 PWind dir E SE S W N NW N NW Wind char LT LT LT LT LT LT LT LT Avg clouds FW FW FW CL FW SC SC SC SC FW FW FW FW FW FW FW PoP 12hr 0 0 5 10 20 5 10 5 Rain shwrs S $$ IAZ094-182100- Lamoni-Decatur IA 40.63N 93.90W Elev. 1125 ft 430 AM CDT Mon Aug 18 2025 Date Mon 08/18/25 Tue 08/19/25 Wed 08/20/25 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 92 71 88 67 84 Temp 74 84 90 92 88 79 76 73 71 79 85 88 84 77 73 69 68 75 81 83 80 Dewpt 74 75 74 74 75 75 73 72 71 74 74 73 73 72 71 69 68 69 67 66 66 RH 100 74 60 56 66 88 90 97100 85 70 61 70 85 93100100 82 63 57 62 Wind dir S SW SW SW S S SW W NW N NE NE NE NE NE NE NE NE NE NE NE Wind spd 6 8 9 8 4 3 3 3 3 3 4 5 5 5 4 5 5 5 6 6 5 Clouds FW FW FW FW SC SC SC SC SC B1 B1 SC SC FW FW SC SC FW FW FW CL PoP 12hr 10 30 30 20 10 QPF 12hr 0.04 0.21 0 0.07 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs S S C C C C S S S S Tstms S S C C C C S S Heat index 92 99102 98 93 96 91 Max heat 101 105 96 95 99 88 85 86 Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 61 82 60 85 62 81 56 75 Temp 68 63 78 78 65 61 81 80 68 64 78 77 62 57 72 71 Dewpt 66 63 63 63 63 61 64 67 66 62 59 59 58 54 53 54 PWind dir NE E SE SW N N N N Wind char LT LT LT LT LT LT LT LT Avg clouds FW FW FW CL CL FW FW FW SC SC SC FW FW FW FW FW PoP 12hr 0 0 0 5 10 5 10 5 $$ IAZ017-182100- Mason City-Cerro Gordo IA 43.16N 93.33W Elev. 1189 ft 430 AM CDT Mon Aug 18 2025 Date Mon 08/18/25 Tue 08/19/25 Wed 08/20/25 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 85 69 82 61 79 Temp 72 77 81 84 83 74 73 70 69 76 80 81 79 70 67 63 62 71 76 77 75 Dewpt 72 73 75 76 75 73 70 69 68 71 71 70 70 68 65 63 62 65 66 66 65 RH 100 87 82 77 77 97 90 97 97 85 74 69 74 93 93100100 81 71 69 71 Wind dir SE S SW W W W NW NW N N N N N N NE NE NE NE NE NE NE Wind spd 9 10 10 9 5 2 2 3 3 5 6 8 6 4 3 2 3 4 5 5 4 Clouds B2 B2 B1 SC SC SC SC SC B1 SC SC FW FW FW FW FW FW FW FW CL CL PoP 12hr 60 10 5 0 0 QPF 12hr 0.24 0 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs L S S S Tstms C S S S Heat index 87 92 90 Max heat 87 94 85 83 86 Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 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 57 78 58 79 55 73 49 69 Temp 62 59 76 75 61 60 76 74 61 57 71 68 55 51 66 65 Dewpt 60 58 64 64 60 59 66 65 58 54 56 55 50 49 52 53 PWind dir E SE S W NW NW NW NW Wind char LT LT LT LT LT GN LT LT Avg clouds CL FW FW CL FW SC SC SC FW FW FW FW FW FW FW FW PoP 12hr 0 0 5 10 10 5 5 0 $$ IAZ049-182100- Marshalltown-Marshall IA 42.11N 92.91W Elev. 972 ft 430 AM CDT Mon Aug 18 2025 Date Mon 08/18/25 Tue 08/19/25 Wed 08/20/25 CDT 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 88 70 85 64 80 Temp 73 80 86 87 83 76 74 72 71 78 83 85 81 72 69 66 64 72 77 80 76 Dewpt 73 75 76 77 76 75 72 70 70 73 73 72 71 70 68 65 64 67 67 66 66 RH 100 85 72 72 80 97 93 93 97 85 72 65 72 93 97 97100 84 71 62 71 Wind dir S S SW W W SW W N N N N N N N N NE NE NE NE NE NE Wind spd 8 9 9 8 4 3 3 3 4 5 5 6 5 5 4 4 5 5 6 6 5 Clouds B2 B2 SC SC FW SC SC B1 B1 SC SC SC FW FW FW FW FW FW FW FW FW PoP 12hr 40 30 10 5 5 QPF 12hr 0.14 0.03 0 0 0 Snow 12hr 00-00 00-00 00-00 Rain shwrs C S S C C S S Tstms S S S C C S S Heat index 85 96 99 92 89 91 Max heat 98 102 91 90 93 83 Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 CDT 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 58 79 59 81 59 76 51 70 Temp 64 59 76 76 63 60 77 76 65 60 74 71 57 52 68 66 Dewpt 63 59 63 65 61 59 66 67 62 58 58 58 53 50 53 54 PWind dir E E S W NW NW NW NW Wind char LT LT LT LT LT LT LT LT Avg clouds FW FW FW CL CL FW SC SC SC FW FW CL CL FW FW FW PoP 12hr 0 0 0 5 20 10 10 5 Rain shwrs S $$ IAZ086-182100- Ottumwa-Wapello IA 41.11N 92.45W Elev. 836 ft 430 AM CDT Mon Aug 18 2025 Date Mon 08/18/25 Tue 08/19/25 Wed 08/20/25 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 71 88 67 82 Temp 74 82 90 92 88 79 77 74 72 80 85 87 84 76 72 69 67 74 79 81 78 Dewpt 74 76 76 76 77 75 75 73 72 75 74 74 74 73 71 69 67 69 67 68 68 RH 100 82 64 60 70 88 94 97100 85 70 65 72 90 97100100 84 67 65 71 Wind dir S S S SW SW S SW W NW N N N N N N N N NE NE NE NE Wind spd 6 6 8 6 4 4 4 4 4 4 5 5 5 5 5 5 5 6 8 8 6 Clouds SC SC FW FW SC SC SC B1 SC SC SC SC SC SC FW FW FW FW FW FW FW PoP 12hr 20 40 20 10 5 QPF 12hr 0.03 0.04 0 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 Heat index 90102105100 93 95 91 Max heat 102 107 94 94 98 86 83 85 Date Thu 08/21/25 Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 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 61 80 61 83 62 79 54 73 Temp 66 62 76 77 65 62 79 78 68 64 76 74 61 56 70 69 Dewpt 65 62 64 66 64 61 66 68 66 62 61 61 58 53 55 56 PWind dir NE NE SE W NW NW N NW Wind char LT LT LT LT LT LT LT LT Avg clouds FW FW FW FW CL FW FW FW SC SC FW FW CL FW FW FW PoP 12hr 0 0 0 5 10 10 10 5 $$