Point Forecast Matrices
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
Versions:
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937 FOCA52 TJSJ 110903 PFMSJU Point Forecast Matrices National Weather Service San Juan PR 503 AM AST Mon Aug 11 2025 PRZ001-112000- Luis Munoz Marin International Airport-San Juan 18.43N 66.00W Elev. 9 ft 503 AM AST Mon Aug 11 2025 Date Mon 08/11/25 Tue 08/12/25 Wed 08/13/25 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 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 79 90 79 89 Temp 85 89 90 87 83 81 80 80 86 89 90 87 83 81 80 80 85 88 89 86 82 Dewpt 75 75 75 75 75 75 76 76 77 77 77 77 76 77 77 76 76 76 75 76 76 RH 72 64 62 68 77 82 88 88 75 68 66 72 80 88 91 88 75 68 64 72 82 Wind dir E E E E E E E E E E E E E E E E E E NE NE NE Wind spd 8 12 14 13 10 9 8 6 8 11 13 12 9 8 9 8 8 11 13 12 9 Clouds SC SC SC SC SC FW SC SC B2 B2 B1 B1 SC SC B2 B2 SC SC SC SC FW PoP 12hr 30 60 60 50 50 QPF 12hr 0.07 0.07 0.35 0.14 0.17 Rain shwrs C C S S S S S C L C C C S S C C C C C C S Tstms S S Obvis H H H Heat index 94100101 96 90 87 85 86 97102103 98 90 88 85 86 95100 99 95 89 Max heat 94 102 101 89 97 104 102 89 95 100 99 Heat Y Y Date Thu 08/14/25 Fri 08/15/25 Sat 08/16/25 Sun 08/17/25 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 78 90 79 89 78 89 78 89 Temp 79 85 90 83 80 85 89 82 79 85 89 82 79 85 89 82 Dewpt 75 75 75 75 75 75 75 75 74 74 75 75 74 75 75 76 PWind dir E E E E NE N SW S Wind char GN GN GN GN LT LT LT GN Avg clouds SC B1 SC B1 B1 B1 SC B1 B2 B1 B1 B1 B1 SC SC B1 PoP 12hr 40 40 40 50 50 50 40 50 Rain shwrs C C C C C C C C C C C C C C C C Tstms S S S S $$ PRZ002-112000- Roosevelt Roads Naval Airstation-Ceiba PR 18.25N 65.63W Elev. 39 ft 503 AM AST Mon Aug 11 2025 Date Mon 08/11/25 Tue 08/12/25 Wed 08/13/25 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 89 80 89 80 89 Temp 86 88 89 86 83 82 81 81 86 88 89 86 83 82 81 81 86 88 89 86 83 Dewpt 76 76 76 75 75 76 76 77 77 78 78 78 77 77 77 76 77 77 77 77 76 RH 72 68 66 70 77 82 85 88 75 72 70 77 82 85 88 85 75 70 68 75 80 Wind dir E E E E E E E E E E E E E E E E E E NE NE NE Wind spd 8 12 12 12 10 11 10 9 10 11 10 11 9 9 10 9 9 11 11 11 10 Clouds SC B2 SC SC SC SC SC B2 B2 B2 B1 B1 SC SC B2 B2 B2 B2 SC SC SC PoP 12hr 50 60 60 60 60 QPF 12hr 0.10 0.10 0.37 0.18 0.23 Rain shwrs C C S C S S S C L L C C S S C C L L C C C Tstms S S S S Obvis H H Heat index 95100100 95 90 89 87 88 96102103 99 92 90 87 87 96101102 98 91 Max heat 95 100 100 90 96 103 102 91 96 102 101 Heat Y Y Date Thu 08/14/25 Fri 08/15/25 Sat 08/16/25 Sun 08/17/25 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 80 91 79 89 78 90 79 88 Temp 81 87 91 83 80 85 89 82 79 85 90 83 80 85 88 82 Dewpt 75 76 76 76 75 76 75 75 74 75 76 75 75 76 76 76 PWind dir E E E E NE N SW S Wind char GN GN GN GN GN LT LT GN Avg clouds B1 B1 SC B1 B2 B2 B1 SC B2 B1 B1 B2 B2 B1 B1 B1 PoP 12hr 40 50 50 50 50 60 50 40 Rain shwrs C C C C C C C C C C L L C C C C Tstms S S $$ PRZ007-112000- Mercedita Airport-Ponce PR 18.02N 66.56W Elev. 26 ft 503 AM AST Mon Aug 11 2025 Date Mon 08/11/25 Tue 08/12/25 Wed 08/13/25 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 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 76 91 77 90 Temp 85 89 90 86 81 79 77 78 85 90 91 87 82 80 78 78 85 89 90 86 81 Dewpt 74 76 77 77 75 73 73 73 76 79 79 79 77 75 74 73 76 77 78 78 76 RH 70 66 66 75 82 82 87 85 75 70 68 77 85 85 88 85 75 68 68 77 85 Wind dir E E SE SE E NE NE NE E E SE SE E NE NE NE E E E E NE Wind spd 4 13 13 12 9 5 4 3 4 12 14 10 8 5 4 3 5 13 14 10 8 Wind gust 24 25 Clouds SC SC SC SC SC FW FW SC SC FW SC SC SC SC SC SC SC SC SC SC CL PoP 12hr 20 30 30 30 40 QPF 12hr 0.04 0.02 0.17 0.07 0.35 Rain shwrs S S S S S S C S S S S S S C C C C Tstms S S Obvis H H H H H H H H H Heat index 92101103 97 86 95106108101 89 84 95102105 98 87 Max heat 92 103 102 84 95 108 107 87 95 105 104 Heat Y Y Date Thu 08/14/25 Fri 08/15/25 Sat 08/16/25 Sun 08/17/25 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 76 90 76 89 75 88 75 89 Temp 77 85 90 81 77 84 89 80 76 83 88 79 76 84 89 80 Dewpt 73 75 76 76 73 75 78 76 72 74 76 76 74 75 78 76 PWind dir NE E NE E NE E NE S Wind char LT GN LT GN LT LT LT LT Avg clouds CL CL FW SC SC FW FW SC SC SC SC SC SC SC SC SC PoP 12hr 0 30 10 40 10 30 10 40 Rain shwrs C C S S C C S S C C S S C C $$ PRZ008-112000- Rafael Hernandez Airport-Aguadilla PR 18.50N 67.13W Elev. 237 ft 503 AM AST Mon Aug 11 2025 Date Mon 08/11/25 Tue 08/12/25 Wed 08/13/25 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 88 76 89 77 87 Temp 83 87 88 84 80 78 77 77 84 88 89 85 81 79 78 78 83 86 87 84 81 Dewpt 74 75 76 75 75 75 74 75 76 77 77 76 77 77 77 76 76 76 77 75 76 RH 74 68 68 74 85 91 90 94 77 70 68 75 88 94 97 94 80 72 72 74 85 Wind dir E E NE E E E E E E NE NE E E E E E E NE NE NE E Wind spd 8 12 17 13 17 12 11 8 11 13 14 14 14 14 11 11 10 12 17 16 14 Clouds CL FW SC SC SC SC SC FW FW SC OV OV SC SC SC SC CL CL SC SC CL PoP 12hr 30 30 70 30 40 QPF 12hr 0.30 0.05 1.11 0.11 0.10 Rain shwrs C C C C C S L L C C S S C C Tstms S S S S Obvis H H H H H H H H Heat index 90 97 99 92 85 93101102 95 88 84 92 97 99 92 87 Max heat 90 99 98 84 93 102 100 87 92 99 97 Heat Y Y Date Thu 08/14/25 Fri 08/15/25 Sat 08/16/25 Sun 08/17/25 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 78 88 76 88 77 88 76 88 Temp 79 84 88 80 77 83 88 81 78 84 88 80 77 83 88 80 Dewpt 76 75 75 75 75 75 76 75 75 74 75 74 75 74 75 74 PWind dir E E E NE E NE E SW Wind char GN BZ GN GN GN LT LT BZ Avg clouds CL CL FW SC SC FW FW SC SC SC SC B1 SC SC SC B1 PoP 12hr 0 40 10 20 10 50 10 60 Rain shwrs C C S S S S S S C C S S L L Tstms S S S S $$ PRZ010-112000- Eugenio Maria de Hosto Airport-Mayaguez PR 18.27N 67.15W Elev. 28 ft 503 AM AST Mon Aug 11 2025 Date Mon 08/11/25 Tue 08/12/25 Wed 08/13/25 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 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 74 91 75 89 Temp 83 88 89 84 79 77 75 76 85 90 91 86 80 78 76 76 84 88 89 85 80 Dewpt 75 76 78 77 76 74 73 74 77 79 79 78 78 77 76 75 76 78 79 78 77 RH 77 68 70 80 91 90 94 94 77 70 68 77 94 97100 97 77 72 73 80 91 Wind dir NE E S E E E E NE E E NE NE E E E E E NE NE NE NE Wind spd 4 2 3 3 6 4 4 5 5 2 3 4 6 4 5 5 3 3 2 5 10 Clouds CL SC B2 OV B1 FW SC CL CL FW OV B2 SC SC SC SC FW FW B2 B2 CL PoP 12hr 70 40 70 20 60 QPF 12hr 1.17 0.03 0.83 0.07 1.01 Rain shwrs C L L C S S L L S S S S S S L L Tstms S S S S S S S Obvis H H H H H H H H H H Heat index 90 99103 94 95106108 98 88 92102105 96 85 Max heat 90 103 101 95 108 106 84 92 105 103 Heat Y Y Date Thu 08/14/25 Fri 08/15/25 Sat 08/16/25 Sun 08/17/25 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 75 92 74 92 74 92 75 89 Temp 76 86 92 80 75 85 92 80 75 85 92 81 76 84 89 80 Dewpt 75 76 78 76 75 76 78 76 74 76 78 76 74 76 78 76 PWind dir NE E E E NE N E S Wind char GN LT GN LT LT LT LT GN Avg clouds CL CL SC B1 SC FW SC B1 FW FW SC B1 SC SC SC SC PoP 12hr 0 50 10 60 5 60 10 40 Rain shwrs C C S S L L L L S S C C Tstms S S S S S S $$ VIZ001-112000- CYRIL E. King Airport-St Thomas USVI 18.33N 64.97W Elev. 23 ft 503 AM AST Mon Aug 11 2025 Date Mon 08/11/25 Tue 08/12/25 Wed 08/13/25 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 91 82 92 81 90 Temp 87 90 91 88 85 84 83 83 88 91 92 89 85 83 82 82 87 89 90 87 84 Dewpt 76 76 75 76 76 77 78 77 78 77 77 77 77 77 77 76 76 77 77 77 77 RH 70 64 60 68 75 80 85 82 72 64 62 68 77 82 85 82 70 68 66 72 80 Wind dir E E E E E E E E E E E E E E E E E E NE NE NE Wind spd 13 17 17 14 17 18 17 14 14 14 13 13 14 16 14 14 14 12 13 14 16 Clouds SC SC CL FW SC SC SC SC B2 SC B1 B1 SC SC B1 B1 SC SC CL CL SC PoP 12hr 40 60 60 50 50 QPF 12hr 0.05 0.07 0.35 0.15 0.11 Rain shwrs C C S S S C L C C C S S C C C C S Tstms S S Obvis H H H H H H Heat index 98102102 99 94 93 92 92102105106101 95 92 89 89 97102103 99 94 Max heat 98 103 104 95 102 107 105 94 97 103 103 Date Thu 08/14/25 Fri 08/15/25 Sat 08/16/25 Sun 08/17/25 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 81 91 81 90 81 89 81 90 Temp 82 87 91 84 82 87 90 84 82 86 89 84 81 87 90 84 Dewpt 77 76 76 77 77 76 75 76 75 75 76 75 76 76 76 76 PWind dir E E E E NE NW SW S Wind char BZ BZ BZ GN GN GN GN BZ Avg clouds SC SC SC B1 B2 B1 SC SC B1 B1 B1 B1 B2 B1 B1 SC PoP 12hr 30 50 50 40 40 50 50 40 Rain shwrs C C C C C C C C C C C C C C C S $$ VIZ002-112000- Henry E. Rohlsen Airport-St Croix USVI 17.70N 64.80W Elev. 74 ft 503 AM AST Mon Aug 11 2025 Date Mon 08/11/25 Tue 08/12/25 Wed 08/13/25 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 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 79 91 79 89 Temp 85 89 90 87 83 81 80 80 86 90 91 87 83 81 80 80 85 88 89 86 82 Dewpt 76 75 75 75 76 77 77 77 77 78 78 77 76 76 76 76 76 77 77 77 76 RH 75 64 62 68 80 88 91 91 75 68 66 72 80 85 88 88 75 70 68 75 82 Wind dir E E E E E E E E E E E E E E E E E E NE NE NE Wind spd 12 17 14 14 14 17 14 13 13 14 13 12 13 14 13 12 12 12 14 16 13 Clouds SC SC CL CL SC SC SC SC B1 SC SC SC SC SC SC SC FW FW CL CL CL PoP 12hr 20 40 40 20 5 QPF 12hr 0.03 0.05 0.14 0.06 0.01 Rain shwrs S S S S S S C S S C S S S S S S Obvis H H H H H H H H H H H H H Heat index 95100101 96 90 88 85 87 98105106 99 91 88 85 86 95101102 97 89 Max heat 95 101 100 90 98 106 105 90 95 102 101 Date Thu 08/14/25 Fri 08/15/25 Sat 08/16/25 Sun 08/17/25 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 78 90 78 90 78 89 78 89 Temp 79 85 90 82 79 85 90 82 79 85 89 82 79 85 89 82 Dewpt 75 75 76 76 75 76 75 75 74 74 75 74 74 76 76 76 PWind dir E E E E NE NW SW S Wind char BZ BZ GN GN LT LT GN GN Avg clouds FW SC SC SC SC SC SC SC B1 B1 B1 B1 B2 B1 B1 SC PoP 12hr 30 30 30 40 40 50 50 40 Rain shwrs C C C C C C S C C C C C C C C C $$