Point Forecast Matrices
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
Versions:
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479 FOMY50 PGUM 161741 PFMGUM Point Forecast Matrices National Weather Service Tiyan GU 341 AM ChST Sun May 17 2026 GUZ001-170600- Guam International Airport-Tiyan GU 13.48N 144.79E Elev. 248 ft 341 AM ChST Sun May 17 2026 Date Sun 05/17/26 Mon 05/18/26 Tue 05/19/26 ChST3hrly 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 UTC 3hrly 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 Max/Min 87 78 87 77 87 Temp 77 78 83 87 86 84 82 80 78 79 83 87 86 84 81 79 77 78 83 87 86 Dewpt 76 76 76 76 76 76 77 77 77 77 77 77 77 77 78 77 77 77 77 77 77 RH 97 94 80 70 72 77 85 91 97 94 82 72 75 80 91 94100 97 82 72 75 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 10 12 16 14 14 13 11 10 9 12 16 16 14 14 12 12 10 12 18 14 14 Clouds SC SC SC SC SC SC SC SC SC B1 B1 B1 B1 B2 B2 B2 B2 B1 B1 B1 B1 PoP 12hr 20 20 30 40 40 QPF 12hr 0 0 0.06 0.12 0.29 Rain shwrs S S S S S S S S S C C C C C C C C C C C C Tstms S S S S Heat index 91 97 96 94 90 85 92 98 98 94 90 92 99 98 Max heat 91 97 96 88 92 98 97 88 92 99 Date Wed 05/20/26 Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 ChST6hrly 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6hrly 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 Min/Max 76 88 78 87 78 88 79 87 Temp 81 77 83 87 83 79 84 87 82 78 84 87 83 80 84 86 Dewpt 78 77 77 77 78 78 78 78 78 78 78 78 79 78 78 78 PWind dir E E E E E E E E Wind char GN GN GN GN GN GN GN GN Avg clouds B1 B1 B1 SC B1 B1 B1 B1 SC SC SC SC SC SC B1 B1 PoP 12hr 40 30 20 20 20 20 20 30 Rain shwrs C C C S S S S S S S S S S S C C $$ MPZ001-170600- Rota International Airport-Sinapalu MP 14.17N 145.23E Elev. 592 ft 341 AM ChST Sun May 17 2026 Date Sun 05/17/26 Mon 05/18/26 Tue 05/19/26 ChST3hrly 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 UTC 3hrly 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 Max/Min 87 78 86 77 87 Temp 78 79 83 87 86 84 82 80 79 79 83 86 85 84 81 79 78 78 83 86 86 Dewpt 76 76 76 76 76 76 76 76 76 76 76 77 77 77 77 77 77 77 77 77 77 RH 94 91 80 70 72 77 82 88 91 91 80 75 77 80 88 94 97 97 82 75 75 Wind dir E E E E E E E E E E E E E E E E E E E E E Wind spd 11 19 20 20 19 18 17 17 17 14 17 17 16 16 14 13 11 14 16 18 17 Clouds SC SC SC SC SC SC SC SC SC B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 PoP 12hr 20 20 30 30 30 QPF 12hr 0 0 0.04 0.06 0.17 Rain shwrs S S S S S S S S S C C C C C C C C S S S S Heat index 91 97 96 93 90 85 91 96 96 93 89 84 92 98 97 Max heat 91 97 95 88 91 96 95 88 92 98 Date Wed 05/20/26 Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 ChST6hrly 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6hrly 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 Min/Max 78 86 78 86 77 86 79 85 Temp 82 79 83 86 82 78 83 86 81 77 82 86 83 80 83 85 Dewpt 78 77 77 78 78 77 77 78 78 77 77 78 78 78 78 78 PWind dir E E E E E E E E Wind char BZ BZ GN BZ GN GN GN GN Avg clouds B1 B1 SC SC SC B1 SC SC SC SC SC SC SC SC B1 B1 PoP 12hr 20 20 20 20 20 20 20 30 Rain shwrs S S S S S S S S S S S S S S C C $$ MPZ002-170600- Tinian-San Jose MP 14.97N 145.63E Elev. 74 ft 341 AM ChST Sun May 17 2026 Date Sun 05/17/26 Mon 05/18/26 Tue 05/19/26 ChST3hrly 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 UTC 3hrly 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 Max/Min 87 78 87 76 87 Temp 77 77 83 87 86 84 82 80 78 79 83 87 86 84 81 78 77 77 83 87 86 Dewpt 75 76 75 75 75 75 76 76 76 76 76 76 76 77 77 77 77 77 77 77 77 RH 94 97 77 68 70 74 82 88 94 91 80 70 72 80 88 97100100 82 72 75 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 17 18 17 16 16 14 14 14 13 16 16 14 16 13 13 11 13 16 17 16 Clouds SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 20 20 20 20 20 QPF 12hr 0.08 0.02 0.02 0.07 0.11 Rain shwrs S S S S S S S S S S S S S S S S S S S S S Heat index 90 96 95 93 89 85 92 97 97 93 88 91 98 97 Max heat 90 96 95 88 92 97 96 86 91 98 Date Wed 05/20/26 Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 ChST6hrly 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6hrly 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 Min/Max 77 88 76 87 76 88 77 87 Temp 82 77 84 87 82 77 83 86 81 77 83 87 82 78 83 87 Dewpt 77 77 77 77 78 77 77 77 78 77 77 77 78 77 77 77 PWind dir E E E E E E E E Wind char BZ BZ GN GN GN GN GN GN Avg clouds SC SC SC SC SC SC SC SC SC SC SC SC SC SC B1 B1 PoP 12hr 20 20 20 20 20 20 20 30 Rain shwrs S S S S S S S S S S S S S S C C $$ MPZ003-170600- Saipan International Airport-Obyan MP 15.11N 145.72E Elev. 215 ft 341 AM ChST Sun May 17 2026 Date Sun 05/17/26 Mon 05/18/26 Tue 05/19/26 ChST3hrly 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 UTC 3hrly 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 Max/Min 87 78 87 76 87 Temp 77 77 83 87 86 84 82 80 78 79 83 87 86 84 81 78 77 77 83 87 86 Dewpt 75 76 75 75 75 75 76 76 76 76 76 76 77 77 77 77 77 77 77 77 77 RH 94 97 77 68 70 74 82 88 94 91 80 70 75 80 88 97100100 82 72 75 Wind dir E E E E E E E E E E E E E E E E E E E E E Wind spd 11 16 18 17 16 14 14 13 13 12 16 14 14 14 13 13 11 13 16 17 16 Clouds SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 20 20 20 20 20 QPF 12hr 0.03 0.01 0.02 0.08 0.10 Rain shwrs S S S S S S S S S S S S S S S S S S S S S Heat index 90 96 95 93 89 84 92 98 97 93 88 91 98 97 Max heat 90 96 94 87 92 98 96 87 91 98 Date Wed 05/20/26 Thu 05/21/26 Fri 05/22/26 Sat 05/23/26 ChST6hrly 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6hrly 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 Min/Max 77 88 76 87 76 88 77 88 Temp 81 77 83 87 82 77 83 86 81 77 83 87 82 78 83 87 Dewpt 77 77 77 77 77 77 77 77 78 77 77 77 78 77 77 78 PWind dir E E E E E E E E Wind char BZ BZ GN BZ GN GN GN GN Avg clouds SC SC SC SC SC SC SC SC SC SC SC SC SC SC B1 B1 PoP 12hr 20 20 20 20 20 20 20 30 Rain shwrs S S S S S S S S S S S S S S C C $$