Point Forecast Matrices
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
797 FOCA52 TJSJ 182103 PFMSJU Point Forecast Matrices National Weather Service San Juan PR 503 PM AST Fri Jul 18 2025 PRZ001-190800- Luis Munoz Marin International Airport-San Juan 18.43N 66.00W Elev. 9 ft 503 PM AST Fri Jul 18 2025 Date 07/18/25 Sat 07/19/25 Sun 07/20/25 Mon AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 78 89 77 89 78 Temp 82 80 78 79 85 88 89 86 81 79 77 79 84 88 89 86 82 80 78 79 85 Dewpt 75 75 74 74 74 74 75 75 75 74 75 74 75 75 75 75 74 74 74 73 73 RH 79 85 88 85 70 63 64 70 82 85 94 85 74 66 64 70 77 82 88 82 67 Wind dir E E E E E E E E E E SE SE E E E E E E E E E Wind spd 10 10 8 9 9 11 14 13 10 9 8 8 9 13 14 13 9 8 9 9 8 Clouds SC B2 B2 B2 B1 B2 B2 B2 B2 SC B1 SC SC SC B2 B2 SC SC B2 B2 SC PoP 12hr 60 60 50 50 50 QPF 12hr 0.32 0.82 0.13 0.54 0.05 Rain shwrs C C C L C C C L C C C C C C C C S S C C S Tstms S S S S S Heat index 89 85 93 97 99 95 87 92 98 99 95 88 84 92 Max heat 96 87 93 99 99 85 92 99 99 86 92 Date 07/21 Tue 07/22/25 Wed 07/23/25 Thu 07/24/25 Fri 07/25/25 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 89 78 90 78 90 78 90 78 90 Temp 89 82 78 85 90 82 78 85 90 82 78 85 90 82 78 85 90 82 Dewpt 73 74 74 75 76 75 75 76 75 76 75 75 76 76 75 75 72 72 PWind dir E E E E E E E E E Wind char GN GN BZ GN GN GN GN GN GN Avg clouds SC B1 SC SC SC SC CL FW SC SC SC SC B1 B1 SC B1 B1 SC PoP 12hr 40 30 30 10 30 40 40 40 40 Rain shwrs C C C C C S S C C S C C C C C C C $$ PRZ002-190800- Roosevelt Roads Naval Airstation-Ceiba PR 18.25N 65.63W Elev. 39 ft 503 PM AST Fri Jul 18 2025 Date 07/18/25 Sat 07/19/25 Sun 07/20/25 Mon AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 79 87 79 87 79 Temp 82 81 79 80 84 86 87 85 82 80 79 80 84 86 87 85 82 80 79 80 83 Dewpt 75 75 75 74 75 75 75 76 75 75 75 74 75 76 76 76 74 74 74 73 73 RH 79 82 88 82 74 70 68 75 79 85 88 82 74 72 70 75 77 82 85 79 72 Wind dir NE NE E E E E E E E E E E E E E E E E E E E Wind spd 10 11 9 10 10 10 10 10 9 10 10 11 12 12 12 11 10 11 10 10 11 Clouds SC SC B2 B2 B1 B2 B2 B2 B2 B1 B2 B1 SC SC B2 B2 SC SC B2 B2 B1 PoP 12hr 60 60 50 50 50 QPF 12hr 0.32 0.83 0.14 0.54 0.06 Rain shwrs C C C L C C C L C C C C C C C C S S C C C Tstms S S S S S S S S Heat index 89 87 84 92 95 96 94 89 85 84 92 96 98 94 88 84 84 89 Max heat 96 89 92 96 96 87 92 98 98 86 89 Date 07/21 Tue 07/22/25 Wed 07/23/25 Thu 07/24/25 Fri 07/25/25 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 86 79 88 80 88 81 88 80 87 Temp 86 81 79 84 88 83 80 85 88 83 81 85 88 83 80 84 87 82 Dewpt 73 74 75 75 76 76 75 75 76 76 75 75 76 76 76 76 74 73 PWind dir E E E E E E E E E Wind char GN GN GN GN BZ BZ GN GN BZ Avg clouds B1 B1 B1 B1 SC SC SC SC SC SC SC B1 B2 B1 B1 B1 B2 B2 PoP 12hr 50 40 40 30 30 60 60 50 60 Rain shwrs C C C C C S S C C C C L L C C C L L Tstms S S S S $$ PRZ007-190800- Mercedita Airport-Ponce PR 18.02N 66.56W Elev. 26 ft 503 PM AST Fri Jul 18 2025 Date 07/18/25 Sat 07/19/25 Sun 07/20/25 Mon AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 75 90 76 88 76 Temp 80 78 76 77 84 89 90 87 81 78 77 78 83 87 88 85 80 78 76 78 84 Dewpt 73 72 71 70 70 70 71 71 72 71 71 70 71 70 71 72 71 70 70 71 73 RH 79 82 85 79 63 54 54 59 74 79 82 76 67 57 57 65 74 76 82 79 70 Wind dir NE NE NE NE E SE SE SE E E NE E E SE SE E E E E E E Wind spd 6 5 5 4 4 12 12 9 5 5 4 5 6 13 12 11 6 6 5 5 6 Clouds SC FW CL CL CL SC CL SC FW CL CL CL SC SC FW FW CL CL SC SC CL PoP 12hr 10 30 5 5 5 QPF 12hr 0.03 0.06 0.01 0.01 0.01 Rain shwrs S C S S S S S S Tstms Heat index 84 88 94 96 93 85 88 92 94 91 83 90 Max heat 93 88 96 95 84 88 94 94 90 Date 07/21 Tue 07/22/25 Wed 07/23/25 Thu 07/24/25 Fri 07/25/25 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 89 76 90 76 91 77 91 77 90 Temp 89 80 77 84 90 81 77 85 91 82 78 85 91 82 78 85 90 81 Dewpt 74 72 71 74 76 75 72 74 76 75 72 74 70 71 70 70 70 71 PWind dir E E E E E E E E E Wind char GN LT GN LT GN LT GN LT GN Avg clouds FW SC SC SC FW FW CL FW FW FW CL FW SC SC CL FW FW SC PoP 12hr 20 5 5 0 10 5 30 0 40 Rain shwrs S S S S S S S C C C C $$ PRZ008-190800- Rafael Hernandez Airport-Aguadilla PR 18.50N 67.13W Elev. 237 ft 503 PM AST Fri Jul 18 2025 Date 07/18/25 Sat 07/19/25 Sun 07/20/25 Mon AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 76 86 75 85 75 Temp 80 78 76 77 82 85 86 83 79 77 75 76 81 84 85 83 78 77 75 76 82 Dewpt 75 76 76 75 74 74 74 74 74 75 75 74 74 74 75 74 75 75 74 74 73 RH 85 94100 94 77 70 68 74 85 94100 94 79 72 72 74 91 94 97 94 74 Wind dir E E E E E NE NE E E E E E E E E E E E E E E Wind spd 18 16 14 11 12 8 9 9 11 9 8 9 8 5 10 11 13 8 11 8 8 Clouds FW SC SC SC SC SC B2 OV B2 SC SC SC CL CL B2 B2 B1 B1 FW FW FW PoP 12hr 20 70 60 60 40 QPF 12hr 0.02 1.10 0.09 0.62 0.03 Rain shwrs S S S S S S L L L C S S L L C C Tstms S S S S S Heat index 85 88 93 94 90 86 91 94 90 87 Max heat 91 88 94 94 86 94 94 87 Date 07/21 Tue 07/22/25 Wed 07/23/25 Thu 07/24/25 Fri 07/25/25 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 86 76 87 76 87 76 87 77 87 Temp 86 79 76 83 87 80 76 83 87 80 76 83 87 80 77 83 87 80 Dewpt 74 74 74 74 76 76 76 74 76 76 76 75 76 75 76 74 74 72 PWind dir E E E E E E E E E Wind char GN GN GN GN BZ BZ BZ BZ BZ Avg clouds SC SC FW FW FW SC FW FW SC SC CL CL FW SC CL CL SC B1 PoP 12hr 40 0 30 5 30 0 30 0 60 Rain shwrs C C C C C C C C L L Tstms S S $$ PRZ010-190800- Eugenio Maria de Hosto Airport-Mayaguez PR 18.27N 67.15W Elev. 28 ft 503 PM AST Fri Jul 18 2025 Date 07/18/25 Sat 07/19/25 Sun 07/20/25 Mon AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 73 90 74 89 74 Temp 79 76 74 75 83 89 90 86 79 77 75 76 83 88 89 85 79 77 75 76 83 Dewpt 76 75 74 73 75 77 78 77 76 75 74 73 75 78 78 78 76 75 74 73 75 RH 91 97100 94 77 68 68 75 91 94 97 90 77 72 70 80 91 94 97 90 77 Wind dir NE NE E E E SW W NE NE E E E E SE E E E E E E E Wind spd 13 11 10 6 3 3 4 4 3 4 4 4 3 2 3 4 2 6 4 5 4 Clouds SC FW CL CL CL CL OV OV B1 SC CL CL CL CL B2 B2 B1 B1 CL CL CL PoP 12hr 20 80 40 50 40 QPF 12hr 0.01 1.22 0.04 0.52 0.03 Rain shwrs S L D C S C C C C Tstms S C S S Heat index 90102105 97 90102103 97 90 Max heat 100 90 105 103 90 103 102 90 Date 07/21 Tue 07/22/25 Wed 07/23/25 Thu 07/24/25 Fri 07/25/25 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 89 73 92 74 92 75 92 75 91 Temp 89 78 74 84 92 80 75 85 92 81 76 85 92 81 76 85 91 80 Dewpt 77 74 72 75 78 77 73 76 79 77 75 75 79 77 74 75 72 70 PWind dir E E E E E E E E E Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC B1 FW FW SC B1 CL CL SC B1 CL CL SC B1 CL CL SC B1 PoP 12hr 60 0 60 0 60 0 60 0 70 Rain shwrs L L L L L L L L L L Tstms S S S S S S S S S S $$ VIZ001-190800- CYRIL E. King Airport-St Thomas USVI 18.33N 64.97W Elev. 23 ft 503 PM AST Fri Jul 18 2025 Date 07/18/25 Sat 07/19/25 Sun 07/20/25 Mon AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 80 89 81 89 80 Temp 83 82 80 81 85 88 89 87 84 82 81 82 86 88 89 87 83 82 80 81 85 Dewpt 76 76 76 75 76 76 75 76 76 76 76 76 76 76 76 75 76 76 75 75 74 RH 80 82 88 82 75 68 64 70 77 82 85 82 72 68 66 68 80 82 85 82 70 Wind dir E E E E E E E E E E E E E E E E E E E E E Wind spd 17 17 16 14 13 12 12 12 13 14 17 16 16 16 14 12 16 17 14 17 17 Clouds SC B1 B1 B1 FW SC SC SC SC SC B2 B1 SC SC SC SC SC SC FW FW B1 PoP 12hr 40 30 50 30 30 QPF 12hr 0.10 0.09 0.10 0.08 0.04 Rain shwrs S C C C S S C S C C C S S C C C C C Tstms S S Heat index 91 89 86 87 94 99 99 98 93 89 87 89 96 99100 96 91 89 85 87 93 Max heat 98 91 94 99 99 91 96 100 100 91 93 Date 07/21 Tue 07/22/25 Wed 07/23/25 Thu 07/24/25 Fri 07/25/25 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 89 81 90 81 90 81 90 81 90 Temp 89 84 81 86 90 84 81 86 90 84 81 86 90 84 81 86 90 84 Dewpt 75 76 76 77 77 76 76 76 77 77 77 77 77 77 77 77 73 72 PWind dir E E E E E E E E E Wind char GN BZ BZ BZ BZ BZ BZ BZ BZ Avg clouds B1 SC SC SC SC SC SC SC SC SC SC SC FW SC SC SC SC FW PoP 12hr 20 30 30 20 20 20 20 30 30 Rain shwrs C S S C C S S S S S S S S S S C C S $$ VIZ002-190800- Henry E. Rohlsen Airport-St Croix USVI 17.70N 64.80W Elev. 74 ft 503 PM AST Fri Jul 18 2025 Date 07/18/25 Sat 07/19/25 Sun 07/20/25 Mon AST 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 Min/Max 77 89 78 87 78 Temp 81 79 77 79 84 88 89 86 82 80 78 79 83 86 87 85 81 80 78 79 83 Dewpt 75 75 75 74 75 75 75 75 75 75 75 75 75 75 75 74 74 75 74 73 74 RH 82 88 94 85 74 66 64 70 79 85 91 88 77 70 68 70 79 85 88 82 74 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 14 14 13 12 12 13 12 12 10 13 13 12 14 16 14 13 12 13 13 16 17 Clouds FW SC SC SC CL SC B1 B2 B1 SC B1 SC SC SC SC SC SC SC FW FW SC PoP 12hr 30 50 40 20 20 QPF 12hr 0.09 0.69 0.11 0.03 0.02 Rain shwrs S S C C C C C C C C S S S S S S S Tstms S S Heat index 87 92 98 99 95 89 85 90 95 96 93 86 85 90 Max heat 95 85 92 99 99 87 90 96 95 86 90 Date 07/21 Tue 07/22/25 Wed 07/23/25 Thu 07/24/25 Fri 07/25/25 AST 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20 UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 Max/Min 87 78 88 78 89 78 88 78 88 Temp 87 81 78 84 88 81 78 85 89 82 78 84 88 81 78 84 88 81 Dewpt 74 74 76 76 76 75 76 76 77 76 76 76 76 76 76 76 73 73 PWind dir E E E E E E E E E Wind char GN BZ BZ BZ BZ BZ BZ BZ BZ Avg clouds SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 20 20 10 20 20 20 30 30 40 Rain shwrs S S S S S S S S S S S S S C C C C C $$