Point Forecast Matrices
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
Versions:
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918 FOCA52 TJSJ 220903 PFMSJU Point Forecast Matrices National Weather Service San Juan PR 503 AM AST Fri Aug 22 2025 PRZ001-222000- Luis Munoz Marin International Airport-San Juan 18.43N 66.00W Elev. 9 ft 503 AM AST Fri Aug 22 2025 Date Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 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 88 79 92 Temp 85 88 88 85 81 80 79 79 84 87 88 85 82 81 80 80 87 91 92 88 84 Dewpt 75 76 77 77 77 77 77 76 77 77 77 77 77 77 76 76 77 77 77 77 76 RH 72 68 70 77 88 91 94 91 80 72 70 77 85 88 88 88 72 64 62 70 77 Wind dir E NE NE NE NE E E E E E SE E SE SE SE SE E E E E E Wind spd 10 12 12 10 6 8 6 6 8 8 12 10 6 5 5 5 6 13 16 13 12 Clouds SC SC SC B1 OV OV B2 B2 B2 B1 B2 B2 B1 B1 B1 B1 SC SC SC SC SC PoP 12hr 70 70 60 40 20 QPF 12hr 0.33 0.88 1.05 0.19 0.08 Rain shwrs S S C C L L L C L C L L C C C C S S S S S Tstms S S S S S S S Obvis H H H H H Heat index 93 98100 95 89 85 94100100 96 90 88 84 86 99105106100 93 Max heat 93 100 99 88 94 100 99 89 99 106 105 Heat Y Y Date Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 Thu 08/28/25 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 91 79 90 78 91 Temp 81 87 91 83 80 86 91 83 80 86 90 82 79 86 91 82 Dewpt 76 76 76 76 76 76 76 76 76 76 77 76 76 76 76 75 PWind dir E E E E E E SE SE Wind char GN GN GN GN GN GN LT GN Avg clouds SC SC SC FW CL FW SC SC SC SC B1 SC SC SC SC SC PoP 12hr 20 10 20 20 50 50 20 20 Rain shwrs S S S S S S S S C C C S S S S Tstms S S $$ PRZ002-222000- Roosevelt Roads Naval Airstation-Ceiba PR 18.25N 65.63W Elev. 39 ft 503 AM AST Fri Aug 22 2025 Date Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 89 79 88 80 90 Temp 86 88 89 86 82 81 80 80 85 87 88 86 83 82 80 81 86 89 90 87 84 Dewpt 77 77 78 78 78 78 77 77 77 78 78 78 78 78 78 79 79 78 78 79 77 RH 75 70 70 77 88 91 91 91 77 75 72 77 85 88 94 94 80 70 68 77 80 Wind dir NE NE NE NE NE NE E E E SE S SE S SE SE E E E E E E Wind spd 11 12 11 9 8 9 8 8 6 8 9 8 6 9 9 9 11 12 13 13 16 Clouds SC SC B2 B2 B2 OV B2 B2 B2 B1 B2 B2 B2 B2 B1 B1 SC SC SC SC SC PoP 12hr 60 70 60 50 30 QPF 12hr 0.46 1.06 0.97 0.18 0.08 Rain shwrs C C C C L L L C L C L L C C C C S S C C S Tstms S S S S S S S S S S S Obvis H H H Heat index 96101103 98 91 89 85 85 95101102 98 92 90 88 90100104105101 94 Max heat 96 103 103 90 95 102 101 91 100 105 104 Heat Y Y Date Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 Thu 08/28/25 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 81 90 81 89 80 90 79 89 Temp 82 87 90 84 82 86 89 83 81 86 90 83 80 85 89 82 Dewpt 77 77 77 77 77 77 77 77 77 78 78 77 77 78 78 77 PWind dir E E E E E E E SE Wind char GN GN GN GN GN GN GN GN Avg clouds SC SC SC SC SC SC SC B1 SC SC B1 B1 B2 B1 B1 B1 PoP 12hr 20 20 20 40 50 50 50 50 Rain shwrs S S S S S S C C S C C C C C C C Tstms S S S S S S S S S $$ PRZ007-222000- Mercedita Airport-Ponce PR 18.02N 66.56W Elev. 26 ft 503 AM AST Fri Aug 22 2025 Date Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 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 77 85 78 91 Temp 84 88 89 85 81 79 78 78 82 85 85 83 80 79 78 79 86 90 91 87 82 Dewpt 71 69 74 74 74 73 73 72 74 73 74 74 74 75 75 75 74 73 74 75 74 RH 65 54 61 70 79 82 85 82 77 67 70 74 82 88 91 88 68 58 58 68 77 Wind dir NE E SE E N NE N NE E SE SE SE E E E E E E E E E Wind spd 5 10 14 3 4 4 3 3 6 10 9 6 5 5 6 4 5 12 14 12 10 Wind gust 25 Clouds SC SC B1 OV OV SC SC SC SC SC SC SC B1 B1 SC SC SC SC SC SC SC PoP 12hr 80 70 40 40 10 QPF 12hr 0.92 0.45 0.11 0.09 0.03 Rain shwrs C D L C S S S S S S C C C C S S S Tstms S S Obvis H H H H H Heat index 90 93 98 93 86 83 88 91 92 89 85 83 83 94 99101 96 88 Max heat 90 98 98 85 88 92 92 84 94 101 100 Heat Y Y Date Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 Thu 08/28/25 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 77 92 78 91 77 89 77 89 Temp 78 86 92 83 79 86 91 82 78 84 89 81 78 84 89 81 Dewpt 71 69 70 70 69 70 73 73 72 72 73 74 72 73 72 73 PWind dir NE E NE E NE E E SE Wind char LT GN LT GN LT GN LT GN Avg clouds SC FW FW SC CL CL FW SC CL FW SC SC SC SC SC SC PoP 12hr 10 30 0 30 30 30 20 20 Rain shwrs S S C C C C C C S S S S S $$ PRZ008-222000- Rafael Hernandez Airport-Aguadilla PR 18.50N 67.13W Elev. 237 ft 503 AM AST Fri Aug 22 2025 Date Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 89 76 87 77 89 Temp 85 88 89 85 80 78 77 77 83 86 87 84 80 79 78 78 84 88 89 85 81 Dewpt 75 76 76 76 76 77 77 75 76 77 77 75 76 76 76 76 76 77 78 77 77 RH 72 68 66 75 88 97100 94 80 75 72 74 88 91 94 94 77 70 70 77 88 Wind dir E E NE NE NE E E E E NE E E E E SE E E E NE E E Wind spd 14 16 18 16 13 12 11 10 11 10 6 3 2 4 4 4 5 8 16 17 18 Clouds SC SC SC SC SC SC SC SC SC B1 OV OV SC SC SC SC SC SC B2 B2 SC PoP 12hr 30 30 90 30 50 QPF 12hr 0.10 0.15 1.55 0.06 0.38 Rain shwrs S S S C C C S C C D D C C S S C C S Tstms S S S S Obvis H H H H H Heat index 93 99100 94 86 91 98 98 92 86 93101103 95 88 Max heat 93 100 99 84 91 98 97 85 93 103 102 Heat Y Y Date Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 Thu 08/28/25 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 77 88 78 88 77 88 77 88 Temp 78 84 88 81 79 84 88 81 78 84 88 81 78 84 88 80 Dewpt 75 76 77 76 76 76 77 76 76 76 78 76 76 76 77 75 PWind dir E E E E E E E E Wind char GN BZ BZ BZ GN GN LT LT Avg clouds SC FW FW SC FW FW FW SC SC FW SC B1 CL FW B1 B1 PoP 12hr 20 20 0 20 10 70 20 60 Rain shwrs S S S S S S S L L S L L Tstms S S S S $$ PRZ010-222000- Eugenio Maria de Hosto Airport-Mayaguez PR 18.27N 67.15W Elev. 28 ft 503 AM AST Fri Aug 22 2025 Date Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 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 92 76 89 76 93 Temp 86 91 92 87 81 79 77 77 84 88 89 85 80 78 77 78 87 92 93 87 81 Dewpt 75 77 78 78 78 77 76 76 77 79 79 78 77 77 76 76 77 79 80 79 78 RH 70 64 64 75 91 94 97 97 80 75 73 80 91 97 97 94 72 66 66 77 91 Wind dir NE NE S NE NE NE NE E E S E SE E E E E E E NE NE E Wind spd 11 8 8 9 9 10 6 4 3 2 4 3 3 5 6 5 4 2 4 1 2 Clouds SC SC B2 OV B1 SC SC SC SC B1 B2 B2 SC SC SC SC SC SC B2 B2 SC PoP 12hr 70 40 60 30 50 QPF 12hr 0.57 0.14 0.79 0.04 0.45 Rain shwrs C L C S S C L L C C C C S Tstms S S S S S S Obvis H H H H H Heat index 95105107100 90 83 94103104 97 87 98109112102 89 Max heat 95 107 106 88 94 105 103 85 98 112 110 Heat Y Y Date Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 Thu 08/28/25 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 93 76 93 75 93 76 92 Temp 76 86 93 82 77 87 93 81 76 86 93 82 77 86 92 81 Dewpt 75 76 78 76 75 76 78 77 75 76 79 77 76 77 79 77 PWind dir E E E E E E E SE Wind char LT LT GN LT GN LT LT GN Avg clouds SC FW FW SC SC FW FW SC CL FW SC B1 CL FW SC SC PoP 12hr 20 40 10 40 0 60 20 50 Rain shwrs S C C S S C C L L S C C Tstms S S S S S S S S $$ VIZ001-222000- CYRIL E. King Airport-St Thomas USVI 18.33N 64.97W Elev. 23 ft 503 AM AST Fri Aug 22 2025 Date Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 91 81 89 82 92 Temp 87 90 91 88 84 83 82 82 86 89 89 87 84 83 82 83 88 91 92 89 85 Dewpt 78 78 78 78 78 78 78 77 78 78 78 78 78 79 79 79 79 78 78 78 78 RH 75 68 66 72 82 85 88 85 77 70 70 75 82 88 91 88 75 66 64 70 80 Wind dir NE NE NE E E E E E SE SE SE SE SE SE E E E E E E E Wind spd 17 14 14 12 12 12 12 11 9 10 10 10 11 12 14 16 16 16 16 20 20 Clouds B1 B1 B2 B2 B2 B2 B2 B2 B2 B1 B2 B2 SC SC SC SC SC SC SC SC SC PoP 12hr 60 60 60 30 30 QPF 12hr 0.38 0.53 0.55 0.06 0.05 Rain shwrs C C C C L L C C C C L L C C S S C C Tstms S S S S S S S S S Obvis H H H H H Heat index 100105106101 95 92 90 90 98103103100 96 94 93 94103107107103 97 Max heat 100 106 105 94 98 103 103 95 103 107 106 Date Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 Thu 08/28/25 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 82 92 81 92 81 91 81 91 Temp 83 88 92 85 82 88 92 85 82 87 91 84 82 87 91 84 Dewpt 77 78 77 78 77 77 77 77 78 78 78 78 78 78 77 77 PWind dir E E E E E E E SE Wind char BZ BZ BZ BZ BZ BZ GN GN Avg clouds SC SC SC SC SC SC SC SC SC B1 B1 B1 B2 B1 B1 B1 PoP 12hr 20 20 20 30 40 50 50 50 Rain shwrs S S S S S S C C C C C C C C C Tstms S S S S S S S $$ VIZ002-222000- Henry E. Rohlsen Airport-St Croix USVI 17.70N 64.80W Elev. 74 ft 503 AM AST Fri Aug 22 2025 Date Fri 08/22/25 Sat 08/23/25 Sun 08/24/25 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 78 88 79 90 Temp 85 88 89 86 82 80 79 79 84 87 88 85 82 81 80 80 86 89 90 87 83 Dewpt 77 77 77 77 77 77 77 77 77 78 78 78 77 78 77 77 78 78 78 77 77 RH 77 70 68 75 85 91 94 94 80 75 72 80 85 91 91 91 77 70 68 72 82 Wind dir NE E E E E E E SE SE SE SE SE SE E E E E E E E E Wind spd 16 14 12 10 11 9 8 8 10 11 12 10 10 11 12 13 16 17 17 19 18 Clouds B1 B2 B2 B2 B2 B1 B1 B1 B2 SC B1 B1 SC SC SC SC SC SC SC SC SC PoP 12hr 50 50 50 20 20 QPF 12hr 0.38 0.37 0.32 0.04 0.03 Rain shwrs C C C C C C C C C C C C S S S S S S Tstms S S S S S Obvis H H H H H H H Heat index 95101102 96 89 87 94100101 97 90 89 85 87 97103104 99 92 Max heat 95 102 101 88 94 101 101 89 97 104 103 Date Mon 08/25/25 Tue 08/26/25 Wed 08/27/25 Thu 08/28/25 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 90 79 90 78 90 78 90 Temp 81 86 90 83 80 86 90 82 79 85 90 82 79 85 90 83 Dewpt 76 77 76 77 76 77 76 77 77 77 77 77 77 77 76 77 PWind dir E E E E E E E SE Wind char BZ BZ BZ BZ BZ BZ GN GN Avg clouds SC SC SC SC SC SC SC SC B1 B1 B1 B1 B2 B1 SC B1 PoP 12hr 20 20 10 40 50 50 50 50 Rain shwrs S S S S S S C C C C C C C C C Tstms S S S S S S S $$