FOMY50 PGUM 210536 PFMGUM Point Forecast Matrices National Weather Service Tiyan GU 336 PM ChST Tue Apr 21 2026 GUZ001-211800- Guam International Airport-Tiyan GU 13.48N 144.79E Elev. 248 ft 336 PM ChST Tue Apr 21 2026 Date Tue 04/21/26 Wed 04/22/26 Thu 04/23/26 Fri ChST3hrly 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 UTC 3hrly 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 Min/Max 76 88 76 88 76 Temp 87 85 82 78 77 77 83 88 87 85 82 78 77 77 83 88 87 85 82 78 77 Dewpt 74 74 74 75 75 75 75 74 74 75 75 75 75 75 75 75 75 76 77 76 76 RH 65 70 77 91 94 94 77 63 65 72 79 91 94 94 77 66 68 75 85 94 97 Wind dir NE NE NE E E E E E E E E E E E E E E E E E E Wind spd 10 9 9 8 6 9 12 12 13 12 11 10 9 11 14 14 13 12 11 10 10 Clouds SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 10 5 10 20 20 QPF 12hr 0.01 0.01 0.09 0.04 0.03 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 95 92 87 90 97 96 93 88 91 97 97 94 89 Max heat 96 94 85 90 97 95 86 91 97 96 87 Date 04/24/26 Sat 04/25/26 Sun 04/26/26 Mon 04/27/26 Tue 04/28/26 ChST6hrly 10 16 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6hrly 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 Max/Min 88 76 88 76 89 76 88 77 89 Temp 83 87 82 77 83 87 82 77 84 88 82 77 84 87 82 77 84 88 Dewpt 75 75 76 76 75 75 75 75 75 75 77 77 77 77 76 76 76 76 PWind dir E E NE NE NE NE E E E Wind char GN GN GN GN BZ BZ GN GN 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 10 10 10 20 20 20 Rain shwrs S S S S S S S S S S S S S S S S S S $$ MPZ001-211800- Rota International Airport-Sinapalu MP 14.17N 145.23E Elev. 592 ft 336 PM ChST Tue Apr 21 2026 Date Tue 04/21/26 Wed 04/22/26 Thu 04/23/26 Fri ChST3hrly 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 UTC 3hrly 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 Min/Max 77 87 77 87 77 Temp 87 85 82 79 78 78 83 87 87 85 82 79 78 78 83 87 87 85 82 79 78 Dewpt 73 74 74 74 74 74 74 74 74 75 75 75 75 75 75 75 75 76 76 76 75 RH 63 70 77 85 88 88 74 65 65 72 79 88 91 91 77 68 68 75 82 91 91 Wind dir NE NE NE NE NE NE E E E E E E E E E E E E E E E Wind spd 9 9 9 8 8 10 13 13 12 12 11 10 10 11 14 14 13 13 12 10 10 Clouds SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 5 5 10 10 10 QPF 12hr 0.01 0.01 0.02 0.01 0.02 Rain shwrs S S S S S S S S S S S S S S S S S S S S S Heat index 94 91 87 83 90 95 95 92 88 83 90 96 96 93 89 83 Max heat 94 93 86 90 95 94 87 90 96 95 87 Date 04/24/26 Sat 04/25/26 Sun 04/26/26 Mon 04/27/26 Tue 04/28/26 ChST6hrly 10 16 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6hrly 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 Max/Min 87 77 8777 87 77 86 77 87 Temp 83 87 82 78 83 86 82 78 83 87 82 78 83 85 81 78 83 87 Dewpt 75 75 75 75 74 74 74 74 75 75 76 77 77 77 76 76 76 76 PWind dir E E E NE NE E E E E Wind char GN GN GN GN BZ BZ GN GN BZ Avg clouds SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 10 10 10 10 10 10 20 20 20 Rain shwrs S S S S S S S S S S S S S S S S S S $$ MPZ002-211800- Tinian-San Jose MP 14.97N 145.63E Elev. 74 ft 336 PM ChST Tue Apr 21 2026 Date Tue 04/21/26 Wed 04/22/26 Thu 04/23/26 Fri ChST3hrly 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 UTC 3hrly 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 Min/Max 76 88 76 88 76 Temp 87 85 82 78 77 77 83 88 87 85 82 78 77 77 83 88 87 85 82 78 77 Dewpt 73 73 73 73 73 73 73 73 73 74 74 75 75 74 74 74 75 75 75 75 75 RH 63 67 74 85 87 87 72 61 63 70 77 91 94 90 74 63 68 72 79 91 94 Wind dir NE NE NE NE NE NE E E E E E E E E E E E E E E E Wind spd 8 9 8 6 6 10 12 12 12 12 11 10 9 11 13 13 12 12 11 10 9 Clouds SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 5 0 20 20 10 QPF 12hr 0 0 0.03 0.02 0.02 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 94 91 87 89 95 95 92 87 90 97 96 93 88 Max heat 95 93 85 89 95 94 85 90 97 95 86 Date 04/24/26 Sat 04/25/26 Sun 04/26/26 Mon 04/27/26 Tue 04/28/26 ChST6hrly 10 16 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6hrly 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 Max/Min 88 76 89 76 89 76 88 76 88 Temp 83 87 82 77 83 88 82 77 84 88 82 77 83 87 81 77 83 87 Dewpt 74 74 75 74 73 74 75 74 74 75 76 76 77 77 76 76 76 76 PWind dir E E NE NE NE E E E E Wind char GN GN GN GN BZ GN GN GN BZ Avg clouds SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 10 10 5 5 5 20 20 20 20 Rain shwrs S S S S S S S S S S S S S S S S S S $$ MPZ003-211800- Saipan International Airport-Obyan MP 15.11N 145.72E Elev. 215 ft 336 PM ChST Tue Apr 21 2026 Date Tue 04/21/26 Wed 04/22/26 Thu 04/23/26 Fri ChST3hrly 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 UTC 3hrly 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 Min/Max 76 88 76 88 76 Temp 87 85 82 78 77 77 83 88 87 85 82 78 77 77 83 88 87 85 82 78 77 Dewpt 73 73 73 73 73 73 73 73 73 74 74 75 74 74 74 74 74 75 75 75 75 RH 63 67 74 85 87 87 72 61 63 70 77 91 90 90 74 63 65 72 79 91 94 Wind dir NE NE NE NE NE NE E E E E E E E E E E E E E E E Wind spd 8 8 8 6 6 10 12 12 12 12 11 10 9 11 13 13 12 12 11 10 10 Clouds SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 5 5 20 20 10 QPF 12hr 0 0 0.03 0.02 0.03 Rain shwrs S S S S S S S S S S S S S S S S S S S S S Heatindex 94 91 87 89 95 95 92 87 90 97 96 93 88 Max heat 95 93 85 89 95 94 85 90 97 95 86 Date 04/24/26 Sat 04/25/26 Sun 04/26/26 Mon 04/27/26 Tue 04/28/26 ChST6hrly 10 16 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6hrly 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 Max/Min 88 76 89 76 89 76 88 76 88 Temp 83 87 82 77 83 88 82 77 84 88 82 77 83 87 81 77 83 87 Dewpt 74 74 75 74 73 74 74 74 74 75 76 76 77 77 76 76 76 76 PWind dir E E NE NE NE E E E E Wind char GN GN GN GN BZ BZ GN GN BZ Avg clouds SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 10 10 5 5 5 20 20 20 20 Rain shwrs S S S S S S S S S S S S S S S S S S $$