Point Forecast Matrices
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
Versions:
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874 FOCA52 TJSJ 090903 PFMSJU Point Forecast Matrices National Weather Service San Juan PR 503 AM AST Sat Aug 9 2025 PRZ001-092000- Luis Munoz Marin International Airport-San Juan 18.43N 66.00W Elev. 9 ft 503 AM AST Sat Aug 9 2025 Date Sat 08/09/25 Sun 08/10/25 Mon 08/11/25 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 77 90 78 90 Temp 85 89 90 86 81 79 78 78 85 89 90 86 82 80 79 79 85 89 90 87 83 Dewpt 75 75 75 75 74 74 74 73 75 75 74 74 75 75 74 74 74 75 75 74 75 RH 72 64 62 70 79 85 88 85 72 64 60 68 79 85 85 85 70 64 62 65 77 Wind dir E E E E E E SE SE E E E E E E E E E E E E E Wind spd 6 10 13 13 9 8 5 5 6 10 16 13 10 9 8 8 6 11 12 13 10 Clouds B2 B2 SC B2 B1 B2 B2 B2 B1 SC SC B1 SC SC SC SC SC SC B1 B1 CL PoP 12hr 50 50 40 30 50 QPF 12hr 0.30 0.16 0.47 0.11 0.31 Rain shwrs C C S C C C C C C S C C C C C C C C C C Tstms S Heat index 94100101 95 87 83 94100 99 94 89 85 83 93100101 95 90 Max heat 94 101 100 86 94 100 99 87 93 101 99 Heat Y Y Date Tue 08/12/25 Wed 08/13/25 Thu 08/14/25 Fri 08/15/25 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 79 91 80 90 79 90 78 89 Temp 80 86 91 84 81 86 90 83 80 86 90 82 79 85 89 82 Dewpt 76 77 76 77 76 76 76 76 75 75 76 76 75 76 75 76 PWind dir E E E E E E E NE Wind char GN GN LT GN GN GN GN GN Avg clouds FW B1 B2 SC SC FW FW SC SC B1 B1 B1 SC SC SC SC PoP 12hr 60 60 10 30 50 50 30 30 Rain shwrs C L L C S S S C C C C C C C C S Tstms S S $$ PRZ002-092000- Roosevelt Roads Naval Airstation-Ceiba PR 18.25N 65.63W Elev. 39 ft 503 AM AST Sat Aug 9 2025 Date Sat 08/09/25 Sun 08/10/25 Mon 08/11/25 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 88 79 89 80 89 Temp 85 87 88 85 82 81 80 80 85 88 89 86 83 82 81 81 86 88 89 87 84 Dewpt 76 76 76 76 74 75 75 74 76 75 75 75 75 75 74 74 75 76 76 75 76 RH 75 70 68 75 77 82 85 82 75 66 64 70 77 79 79 79 70 68 66 68 77 Wind dir E E E E E E E E E E E E E E E E E E E E E Wind spd 8 8 9 9 9 8 6 6 8 10 10 11 10 10 9 8 8 11 11 10 11 Clouds B2 B2 SC B2 B2 B2 B2 B2 B2 SC SC B1 B1 B1 B1 B1 B2 B2 B1 B1 FW PoP 12hr 60 60 50 50 50 QPF 12hr 0.35 0.29 0.50 0.15 0.34 Rain shwrs C L C C L C L L C C C C C C C C C C C C Tstms S Heat index 94 99 99 94 88 86 84 84 95 98 99 95 90 88 85 86 94100100 96 92 Max heat 94 99 98 88 95 99 99 89 94 101 99 Heat Y Y Date Tue 08/12/25 Wed 08/13/25 Thu 08/14/25 Fri 08/15/25 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 81 91 81 90 80 90 80 89 Temp 81 87 91 84 82 87 90 83 81 86 90 83 81 86 89 82 Dewpt 76 77 77 77 76 76 76 76 75 76 76 76 76 76 76 76 PWind dir E E E E E E E NE Wind char GN GN GN GN GN GN GN GN Avg clouds SC B2 B2 SC SC FW FW SC B1 B1 B2 B1 B1 B1 SC SC PoP 12hr 60 60 10 40 50 50 40 30 Rain shwrs C L L C S S S C C C C C C C C S Tstms S S $$ PRZ007-092000- Mercedita Airport-Ponce PR 18.02N 66.56W Elev. 26 ft 503 AM AST Sat Aug 9 2025 Date Sat 08/09/25 Sun 08/10/25 Mon 08/11/25 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 90 76 90 Temp 83 87 88 84 80 78 77 77 85 89 90 86 81 79 77 77 85 89 90 86 81 Dewpt 70 71 72 73 76 74 72 72 74 77 77 76 76 73 72 71 74 76 76 77 74 RH 65 59 59 70 88 88 85 85 70 68 66 72 85 82 85 82 70 66 64 75 79 Wind dir E SE SE SE E NE NE NE E SE SE SE E NE NE NE E E E E E Wind spd 4 11 9 6 4 5 5 4 5 10 11 11 6 5 4 4 4 14 16 13 8 Wind gust 26 Clouds SC B1 SC SC B1 SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC CL PoP 12hr 40 40 10 30 30 QPF 12hr 0.29 0.15 0.16 0.03 0.20 Rain shwrs C C C S C C S S S S S S C C C C Heat index 87 93 95 91 85 92102103 96 87 92101102 97 86 Max heat 87 95 94 83 92 103 102 84 92 102 101 Heat Y Y Date Tue 08/12/25 Wed 08/13/25 Thu 08/14/25 Fri 08/15/25 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 91 77 91 77 90 76 89 Temp 77 85 91 82 78 86 91 82 78 85 90 81 77 84 89 80 Dewpt 73 75 78 76 73 74 77 75 73 74 78 76 73 74 77 76 PWind dir NE E E E NE E NE E Wind char LT GN LT GN LT GN LT GN Avg clouds FW SC SC SC SC FW FW SC SC FW SC SC SC SC FW SC PoP 12hr 30 30 10 20 5 30 20 40 Rain shwrs S C C S S S S S S S C C S S C C Tstms S S $$ PRZ008-092000- Rafael Hernandez Airport-Aguadilla PR 18.50N 67.13W Elev. 237 ft 503 AM AST Sat Aug 9 2025 Date Sat 08/09/25 Sun 08/10/25 Mon 08/11/25 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 87 75 87 76 88 Temp 82 86 87 83 79 77 76 76 82 86 87 84 80 78 77 77 83 87 88 84 80 Dewpt 74 75 75 75 74 75 74 73 73 74 75 74 75 75 74 74 74 74 75 74 76 RH 77 70 68 77 85 94 94 90 74 68 68 72 85 91 90 90 74 65 66 72 88 Wind dir E NE NE E E E E E E E NE E E E E E E E NE E E Wind spd 9 5 5 9 11 11 8 5 6 4 10 10 11 6 9 6 9 11 17 17 16 Clouds SC SC B1 B2 B2 B1 SC SC CL SC B2 OV SC SC SC SC SC SC B2 B2 B1 PoP 12hr 50 50 70 20 60 QPF 12hr 0.42 0.05 1.20 0.04 0.74 Rain shwrs C C C C C S S L L S S S S S S L L C Tstms S S S S S S Heat index 89 95 96 90 88 94 96 91 84 90 96 98 92 85 Max heat 89 96 96 88 96 95 90 98 97 Heat Y Y Date Tue 08/12/25 Wed 08/13/25 Thu 08/14/25 Fri 08/15/25 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 76 89 77 89 77 88 77 88 Temp 77 84 89 81 78 84 89 81 78 84 88 81 78 84 88 80 Dewpt 75 75 77 77 76 75 76 75 76 75 76 76 76 75 76 76 PWind dir E E E E E E E NE Wind char GN GN LT GN GN BZ BZ BZ Avg clouds B1 SC SC B2 SC SC SC SC FW FW SC SC SC SC SC FW PoP 12hr 40 70 30 30 5 40 30 30 Rain shwrs C L L C C C C S C C S C C Tstms S S $$ PRZ010-092000- Eugenio Maria de Hosto Airport-Mayaguez PR 18.27N 67.15W Elev. 28 ft 503 AM AST Sat Aug 9 2025 Date Sat 08/09/25 Sun 08/10/25 Mon 08/11/25 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 74 90 73 92 Temp 85 90 91 86 80 77 75 76 84 89 90 85 79 76 74 75 85 91 92 86 80 Dewpt 75 76 78 75 75 74 74 73 75 76 78 76 76 75 74 72 74 76 78 77 76 RH 72 64 66 70 85 90 97 90 74 66 68 75 91 97100 90 70 62 64 75 88 Wind dir E SW W NE E E E E E E SW E E E E E E E E E E Wind spd 2 3 3 4 6 6 5 4 4 1 5 4 3 5 3 3 4 2 4 3 4 Clouds SC SC OV OV B2 SC SC SC CL CL B2 B2 SC SC SC SC SC SC OV OV B1 PoP 12hr 80 50 60 30 70 QPF 12hr 1.03 0.05 0.85 0.02 1.13 Rain shwrs S D D C S C L S S C C L L C Tstms S S S S S S S Heat index 93102106 95 84 92100105 94 92103107 98 85 Max heat 93 106 104 92 105 103 92 107 106 Heat Y Y Date Tue 08/12/25 Wed 08/13/25 Thu 08/14/25 Fri 08/15/25 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 74 93 75 92 75 92 75 92 Temp 75 86 93 81 76 86 92 81 76 86 92 81 76 86 92 81 Dewpt 74 76 79 78 75 76 78 77 75 76 78 76 75 76 78 76 PWind dir E E E NE E E E NE Wind char LT LT LT LT GN LT GN GN Avg clouds B1 SC SC B2 SC SC SC SC FW FW SC B1 SC SC SC SC PoP 12hr 40 70 20 50 0 60 20 30 Rain shwrs C L L S S C C L L S S C C Tstms S S S S S S S S $$ VIZ001-092000- CYRIL E. King Airport-St Thomas USVI 18.33N 64.97W Elev. 23 ft 503 AM AST Sat Aug 9 2025 Date Sat 08/09/25 Sun 08/10/25 Mon 08/11/25 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 90 81 91 81 91 Temp 86 89 90 87 84 83 82 82 87 90 91 88 84 83 82 82 87 90 91 88 84 Dewpt 76 76 76 76 75 76 76 75 76 75 75 76 76 76 76 75 76 76 76 76 76 RH 72 66 64 70 74 80 82 79 70 62 60 68 77 80 82 79 70 64 62 68 77 Wind dir E E E E E E E E E E E E E E E E E E E E E Wind spd 11 12 10 10 12 13 13 12 11 10 12 13 14 16 14 13 13 14 14 16 17 Clouds B2 B2 SC B1 B1 B1 B2 B2 B2 SC SC B1 SC SC SC SC B1 B1 B1 B1 SC PoP 12hr 50 60 50 40 50 QPF 12hr 0.09 0.25 0.42 0.11 0.34 Rain shwrs C C C C C C L L C C C C C C C C C C C C S Heat index 96101101 98 92 91 88 89 98101102 99 93 91 89 89 98102103 99 93 Max heat 96 102 101 92 98 103 101 92 98 103 102 Date Tue 08/12/25 Wed 08/13/25 Thu 08/14/25 Fri 08/15/25 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 81 92 82 91 82 91 81 91 Temp 82 88 92 85 83 88 91 85 83 88 91 84 82 87 91 84 Dewpt 77 78 78 78 77 77 76 78 77 77 76 76 77 76 76 76 PWind dir E E E NE E E E NE Wind char BZ BZ GN GN BZ BZ BZ BZ Avg clouds SC B1 B2 SC SC FW FW SC B2 B1 B1 SC SC SC SC SC PoP 12hr 60 60 10 50 50 40 20 50 Rain shwrs C L L C S S S C C C C C S S S C Tstms S S $$ VIZ002-092000- Henry E. Rohlsen Airport-St Croix USVI 17.70N 64.80W Elev. 74 ft 503 AM AST Sat Aug 9 2025 Date Sat 08/09/25 Sun 08/10/25 Mon 08/11/25 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 78 89 78 89 Temp 84 87 88 85 81 80 79 79 85 88 89 86 82 80 79 79 85 88 89 86 82 Dewpt 76 76 76 75 75 75 75 75 75 76 75 75 75 75 75 75 75 76 75 75 76 RH 77 70 68 72 82 85 88 88 72 68 64 70 79 85 88 88 72 68 64 70 82 Wind dir E E E E E E E E E E E E E E E E E E E E E Wind spd 11 11 10 10 10 10 10 10 11 11 12 14 13 14 12 11 11 12 13 14 13 Clouds B1 B1 B1 B2 B2 B1 B2 B2 B2 SC B1 SC SC SC SC SC SC SC SC SC B2 PoP 12hr 50 60 50 30 50 QPF 12hr 0.16 0.28 0.49 0.10 0.21 Rain shwrs C C C C C C L L C S C C C C C C S S S S C Heat index 93 98 98 94 87 85 83 93 99 99 94 88 85 83 93 99 99 95 90 Max heat 93 99 98 86 93 99 98 87 93 100 98 Date Tue 08/12/25 Wed 08/13/25 Thu 08/14/25 Fri 08/15/25 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 79 91 79 91 79 90 78 89 Temp 80 86 91 83 80 86 91 83 80 86 90 82 79 85 89 82 Dewpt 77 78 77 76 75 76 76 76 75 76 76 76 76 76 76 76 PWind dir E E E NE E E E NE Wind char GN GN GN GN GN BZ BZ BZ Avg clouds B2 B1 SC FW CL FW SC SC SC SC B1 SC SC SC FW SC PoP 12hr 50 40 5 20 40 40 10 50 Rain shwrs C C C S S S S S C C C S S S C $$