Point Forecast Matrices
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
Versions:
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124 FOCA52 TJSJ 160632 PFMSJU Point Forecast Matrices National Weather Service San Juan PR 232 AM AST Sun Aug 16 2026 PRZ001-162000- Luis Munoz Marin International Airport-San Juan 18.43N 66.00W Elev. 9 ft 232 AM AST Sun Aug 16 2026 Date Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 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 80 92 80 92 Temp 83 88 90 91 88 84 82 81 81 87 91 92 88 84 82 81 81 87 91 92 88 83 Dewpt 76 76 75 75 74 75 75 74 74 74 74 75 74 75 75 75 75 74 74 76 76 76 RH 80 68 62 60 63 74 79 79 79 65 58 58 63 74 79 82 82 65 58 60 68 80 Wind dir E E E E E E E E E E E E E E E E E E E E E E Wind spd 13 14 16 17 14 11 13 10 11 14 14 16 14 10 9 10 10 10 12 14 13 10 Clouds SC SC SC SC SC FW SC SC FW SC SC SC SC SC SC SC SC SC SC B1 B1 CL PoP 12hr 30 20 20 20 40 QPF 12hr 0.08 0.05 0.10 0.03 0.44 Rain shwrs S S S C S S S S S S S S S S S S S S C C Obvis H H H H H Heat index 91 98101102 96 91 89 86 87 96101103 97 92 89 86 87 96101105 99 92 Max heat 98 102 101 90 96 103 102 91 96 105 104 Heat Y Y Date Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 Sat 08/22/26 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 92 80 92 80 92 Temp 80 86 91 83 80 87 92 84 81 87 92 84 81 87 92 84 Dewpt 76 76 77 77 76 76 76 76 75 74 75 75 75 75 75 75 PWind dir E E SE E E E E E Wind char GN GN LT GN GN BZ GN GN Avg clouds CL FW FW SC B2 B2 SC SC SC SC CL FW SC SC B1 B1 PoP 12hr 5 60 60 50 20 20 30 40 Rain shwrs S L L L C C S S S S C C C Tstms S S S $$ PRZ002-162000- Roosevelt Roads Naval Airstation-Ceiba PR 18.25N 65.63W Elev. 39 ft 232 AM AST Sun Aug 16 2026 Date Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 90 81 90 81 90 Temp 83 87 90 90 87 84 83 82 82 87 89 90 87 84 83 82 82 87 89 90 87 83 Dewpt 76 76 75 75 75 75 75 75 74 75 75 75 75 75 75 75 75 75 75 76 76 76 RH 80 70 62 62 68 74 77 79 77 68 64 62 68 74 77 79 79 68 64 64 70 80 Wind dir E E E E E E E E E E E E E E E E E E E E E E Wind spd 16 16 16 14 12 11 12 11 11 16 12 12 11 10 10 11 10 11 10 12 11 10 Clouds SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC FW PoP 12hr 20 20 20 20 20 QPF 12hr 0.08 0.07 0.08 0.03 0.14 Rain shwrs S S S S S S S S S S S S S S S S S S S S S S Obvis H H H H H H Heat index 91 97100101 97 92 90 88 88 96100101 97 92 90 88 88 96100102 97 92 Max heat 97 101 100 91 96 101 100 91 96 102 101 Heat Y Y Date Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 Sat 08/22/26 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 80 90 81 90 82 90 81 90 Temp 81 86 90 84 82 87 90 85 82 87 90 84 82 87 90 84 Dewpt 76 76 76 77 76 76 76 76 75 75 75 75 75 75 75 75 PWind dir E E SE E E E E E Wind char GN GN GN GN GN GN GN GN Avg clouds FW FW SC B1 B2 B2 B2 SC FW FW CL FW SC B1 B1 B1 PoP 12hr 5 60 60 60 5 30 40 40 Rain shwrs S S C L L L L C C C C C C Tstms S S S S $$ PRZ007-162000- Mercedita Airport-Ponce PR 18.02N 66.56W Elev. 26 ft 232 AM AST Sun Aug 16 2026 Date Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 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 78 92 77 92 Temp 80 87 91 92 88 83 81 79 79 87 91 92 87 82 80 78 79 86 91 92 87 82 Dewpt 74 76 71 69 71 69 69 70 69 69 70 70 69 70 69 69 69 68 69 72 73 71 RH 82 70 52 47 57 63 67 74 72 55 50 49 55 67 69 74 72 55 49 52 63 69 Wind dir NE E E SE E E NE NE NE E SE SE SE E NE NE NE E E SE SE E Wind spd 8 11 17 20 17 8 5 6 5 5 14 16 14 9 6 5 5 5 16 17 13 9 Wind gust 29 33 27 25 27 26 29 24 Clouds SC SC SC FW FW CL CL CL CL CL CL SC SC CL CL FW FW FW FW SC SC CL PoP 12hr 20 0 10 5 30 QPF 12hr 0.03 0 0.06 0 0.28 Rain shwrs S S S S S C C Obvis H H H H H H Heat index 85 98 98 97 94 86 84 82 91 97 98 92 86 83 90 96100 95 86 Max heat 98 99 97 85 91 98 96 85 90 100 100 Heat Y Y Date Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 Sat 08/22/26 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 90 78 90 78 92 77 91 Temp 78 85 90 82 79 85 90 82 79 87 92 82 78 86 91 82 Dewpt 71 70 74 75 74 73 72 75 72 71 72 69 70 70 73 71 PWind dir NE E E E E E NE E Wind char LT GN LT GN LT GN LT GN Avg clouds CL FW SC SC FW SC SC SC SC FW FW FW FW FW FW SC PoP 12hr 5 30 20 40 10 0 5 20 Rain shwrs C C S S C C S S S S $$ PRZ008-162000- Rafael Hernandez Airport-Aguadilla PR 18.50N 67.13W Elev. 237 ft 232 AM AST Sun Aug 16 2026 Date Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 89 77 89 77 89 Temp 79 85 88 89 85 81 79 78 78 84 88 89 85 81 79 78 78 84 88 89 85 81 Dewpt 75 77 78 77 76 76 76 74 73 75 77 76 76 76 76 74 73 75 77 76 77 77 RH 88 77 72 68 75 85 91 88 85 74 70 66 75 85 91 88 85 74 70 66 77 88 Wind dir E E E E E E E E E E E NE NE E E E E E NE NE NE E Wind spd 21 20 20 21 20 21 17 13 10 9 13 14 14 19 16 13 11 11 11 13 13 16 Clouds FW FW CL SC SC CL CL CL CL CL CL B2 B2 CL CL SC SC FW FW SC SC FW PoP 12hr 10 0 50 5 5 QPF 12hr 0.07 0 0.61 0.01 0.08 Rain shwrs S S C C S S S S Obvis H Heat index 83 95102102 95 87 84 93101100 95 87 84 93101100 96 88 Max heat 95 103 100 86 93 101 100 86 93 101 100 Heat Y Y Date Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 Sat 08/22/26 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 77 88 76 88 76 89 77 89 Temp 78 84 88 80 77 83 88 80 77 84 89 81 78 84 89 81 Dewpt 75 77 78 78 75 77 78 77 74 76 76 76 74 76 77 77 PWind dir E E E E E E E E Wind char GN GN LT GN LT BZ BZ BZ Avg clouds FW FW SC B1 FW FW SC B2 B2 SC FW FW FW FW SC B1 PoP 12hr 5 50 5 60 50 10 0 60 Rain shwrs C C L L C C S S L L Tstms S S S S $$ PRZ010-162000- Eugenio Maria de Hosto Airport-Mayaguez PR 18.27N 67.15W Elev. 28 ft 232 AM AST Sun Aug 16 2026 Date Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 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 93 75 93 75 93 Temp 80 87 92 93 87 81 78 76 77 86 92 93 87 81 78 76 77 86 92 93 87 81 Dewpt 74 76 79 79 77 76 74 73 73 75 76 78 77 76 75 74 73 74 77 78 78 77 RH 82 70 66 64 72 85 88 90 87 70 60 62 72 85 91 94 87 68 62 62 75 88 Wind dir E E E E NE NE E E E E E W NE NE E E E E NE NW NE E Wind spd 12 9 3 5 10 6 12 8 4 2 4 8 5 10 5 6 6 5 4 6 2 4 Clouds FW FW FW OV OV CL CL CL CL CL CL B2 B2 FW FW FW FW FW FW B2 B2 SC PoP 12hr 70 0 60 5 50 QPF 12hr 0.56 0 0.74 0.01 0.54 Rain shwrs L L L L S S C C S Tstms S S S S Obvis H H H H Heat index 84 98109110 99 87 95104109 99 87 94106109101 88 Max heat 98 110 108 85 95 109 108 85 94 109 108 Heat Y Y Date Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 Sat 08/22/26 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 75 92 75 92 75 92 Temp 76 86 93 81 76 86 92 81 76 86 92 81 76 86 92 81 Dewpt 75 76 79 78 75 77 79 77 74 75 78 76 73 75 78 77 PWind dir E E E E E NE E E Wind char LT LT LT LT LT LT GN LT Avg clouds SC FW SC B1 FW FW SC B2 SC SC FW SC FW FW SC B1 PoP 12hr 5 50 5 60 30 40 0 60 Rain shwrs S S C C L L C C C C L L Tstms S S S S $$ VIZ001-162000- CYRIL E. King Airport-St Thomas USVI 18.33N 64.97W Elev. 23 ft 232 AM AST Sun Aug 16 2026 Date Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 AST 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 Max/Min 92 82 89 82 92 Temp 84 89 91 92 89 85 84 83 83 86 89 89 87 84 83 82 83 88 91 92 89 85 Dewpt 77 76 71 70 72 71 71 71 70 70 70 70 71 71 72 72 71 70 71 72 72 72 RH 80 66 52 49 57 63 65 67 65 59 54 54 59 65 70 72 67 55 52 52 57 65 Wind dir E E E E E E E E E E E E E E E E E E E E E E Wind spd 21 20 18 16 18 20 17 17 23 18 16 13 13 16 18 14 14 16 17 13 14 14 Clouds FW SC SC SC SC SC SC SC SC SC SC CL CL SC SC SC SC SC SC SC SC SC PoP 12hr 20 20 20 20 20 QPF 12hr 0.05 0.07 0.08 0.02 0.23 Rain shwrs S S S S S S S S S S S S S S S S S S S Obvis H H H H H H Heat index 94100 98 98 96 91 89 87 87 91 94 94 93 89 89 87 88 93 98100 96 90 Max heat 100 99 97 90 91 94 94 89 93 100 99 Heat Y Y Date Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 Sat 08/22/26 AST 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Min/Max 81 92 82 92 82 92 82 92 Temp 82 88 92 85 83 88 92 85 83 88 92 85 83 88 92 85 Dewpt 73 72 72 72 73 73 72 72 71 71 71 71 71 71 71 71 PWind dir E E E E E E E E Wind char BZ BZ BZ BZ BZ BZ BZ BZ Avg clouds SC SC SC B1 B2 B2 B2 SC FW FW CL FW SC B1 B1 SC PoP 12hr 10 60 60 60 5 30 40 40 Rain shwrs S S S L L L L C C C C C C Tstms S S S S $$ VIZ002-162000- Henry E. Rohlsen Airport-St Croix USVI 17.70N 64.80W Elev. 74 ft 232 AM AST Sun Aug 16 2026 Date Sun 08/16/26 Mon 08/17/26 Tue 08/18/26 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 80 90 80 90 Temp 83 87 90 90 87 83 82 81 81 86 89 90 87 83 82 81 81 86 89 90 87 83 Dewpt 77 76 76 75 75 75 75 75 75 75 75 75 75 76 76 76 75 76 76 76 76 76 RH 82 70 64 62 68 77 79 82 82 70 64 62 68 80 82 85 82 72 66 64 70 80 Wind dir E E E E E E E E E E E E E E E E E E E E E E Wind spd 20 20 20 19 18 17 18 16 16 17 17 16 14 14 14 13 13 16 16 14 13 12 Clouds SC SC SC FW CL SC SC CL SC CL CL FW FW SC SC SC SC SC SC SC SC SC PoP 12hr 20 20 20 20 20 QPF 12hr 0.05 0.05 0.07 0.04 0.11 Rain shwrs S S S S S S S S S S S S S S S Obvis H H H H H H Heat index 92 97101101 96 91 88 86 87 95100101 96 92 89 87 87 96101102 97 90 Max heat 97 101 99 90 95 101 100 91 96 102 101 Heat Y Y Date Wed 08/19/26 Thu 08/20/26 Fri 08/21/26 Sat 08/22/26 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 90 80 91 80 91 80 91 Temp 80 86 90 83 81 87 91 84 81 87 91 84 81 87 91 84 Dewpt 77 77 76 76 77 77 76 75 75 75 75 75 75 75 75 75 PWind dir E E E E E E E E Wind char GN GN GN BZ BZ BZ BZ BZ Avg clouds SC SC SC SC B2 B2 B1 SC FW FW CL FW SC SC SC SC PoP 12hr 20 50 60 60 5 20 30 30 Rain shwrs S S S C C L L S S S C C S Tstms S S $$