FOMY50 PGUM 200511 PFMGUM Point Forecast Matrices National Weather Service Tiyan GU 311 PM ChST Wed May 20 2026 GUZ001-201800- Guam International Airport-Tiyan GU 13.48N 144.79E Elev. 248 ft 311 PM ChST Wed May 20 2026 Date Wed 05/20/26 Thu 05/21/26 Fri 05/22/26 Sat 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 78 87 78 88 78 Temp 87 85 83 80 79 79 84 87 87 85 82 80 78 79 84 87 87 85 82 80 78 Dewpt 77 77 77 77 77 77 77 78 78 78 78 78 78 78 78 78 78 79 79 79 78 RH 72 77 82 91 94 94 80 75 75 80 88 94100 97 82 75 75 82 91 97100 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 16 14 13 12 11 14 16 14 13 12 11 9 8 10 13 13 13 12 12 10 9 Clouds SC SC SC SC SC B1 B1 B1 B1 B1 B1 B1 B1 SC SC SC SC SC SC SC SC PoP 12hr 20 30 30 30 20 QPF 12hr 0.08 0.11 0.08 0.07 0.06 Rain shwrs S S S S S S S C C C C C C S S S S S S S S Heat index 99 95 91 86 93100 99 96 91 85 94101100 97 92 85 Max heat 100 99 89 93 100 98 90 94 101 100 90 Date 05/23/26 Sun 05/24/26 Mon 05/25/26 Tue 05/26/26 Wed 05/27/26 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 78 86 77 86 77 86 79 86 Temp 83 86 82 78 83 85 83 81 82 83 82 81 84 85 83 82 84 85 Dewpt 78 78 79 78 78 78 79 78 78 78 78 78 77 78 78 78 78 77 PWind dir E E E E E SE SE S S Wind char GN GN GN GN GN GN LT LT GN Avg clouds SC SC B1 B1 B1 B1 B1 B2 B2 B2 B2 B2 B1 B1 B1 B1 B1 B1 PoP 12hr 20 30 40 40 40 50 50 30 30 Rain shwrs S S C C C C C C C C C C C C C C C C Tstms S S S S S S S S S S S S S S S S S S $$ MPZ001-201800- Rota International Airport-Sinapalu MP 14.17N 145.23E Elev. 592 ft 311 PM ChST Wed May 20 2026 Date Wed 05/20/26 Thu 05/21/26 Fri 05/22/26 Sat ChST3hrly 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 UTC 3hrly 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 Min/Max 78 86 77 86 77 Temp 86 84 82 80 78 79 83 86 86 84 81 79 77 78 82 86 85 84 81 79 77 Dewpt 76 76 76 76 77 77 77 78 77 78 78 78 77 78 78 78 78 78 78 78 77 RH 72 77 82 88 97 94 82 77 75 82 91 97100100 88 77 80 82 91 97100 Wind dir E E E E E E E E E E E E E E E E E E E E E Wind spd 17 17 16 13 12 14 16 16 14 14 13 11 10 11 13 14 13 13 13 11 10 Clouds SC SC SC SC SC SC SC B1 B1 B1 B1 B1 B1 SC SC SC SC SC SC SC SC PoP 12hr 20 30 30 30 20 QPF 12hr 0.03 0.09 0.07 0.09 0.05 Rain shwrs S S S S S S S C C C C C C S S S S S S S S Heat index 96 93 89 85 92 98 97 94 89 91 98 97 94 90 Max heat 97 96 88 92 98 96 88 91 98 97 88 Date 05/23/26 Sun 05/24/26 Mon 05/25/26 Tue 05/26/26 Wed 05/27/26 ChST6hrly 10 16 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6hrly 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 Max/Min 85 77 85 77 84 77 84 81 85 Temp 82 85 81 77 82 85 83 82 82 82 82 82 83 83 83 83 84 84 Dewpt 78 78 79 77 78 78 78 78 77 78 78 78 78 78 78 77 77 77 PWind dir E E E E E E SE SE S Wind char GN GN GN GN GN GN GN LT GN Avg clouds SC SC B1 B1 B1 B1 B1 B1 B2 B2 B2 B2 B1 B1 B1 B1 B1 B1 PoP 12hr 20 20 30 40 40 50 50 30 30 Rain shwrs S S S S C C C C C C C C C C C C C C Tstms S S S S S S S S S S S S S S S S S S $$ MPZ002-201800- Tinian-San Jose MP 14.97N 145.63E Elev. 74 ft 311 PM ChST Wed May 20 2026 Date Wed 05/20/26 Thu 05/21/26 Fri 05/22/26 Sat 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 87 76 88 76 Temp 87 85 82 79 77 77 83 87 86 84 81 78 77 77 83 88 87 85 82 79 77 Dewpt 76 76 76 76 76 76 77 77 77 77 78 77 77 77 77 77 77 78 78 78 77 RH 70 75 82 91 97 97 82 72 75 80 91 97100100 82 70 72 80 88 97100 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 13 11 14 17 17 16 16 13 11 10 12 14 14 13 13 12 10 9 Clouds SC SC SC SC SC SC SC B1 B1 B1 B1 B1 B1 SC SC SC SC SC SC SC SC PoP 12hr 20 30 30 30 20 QPF 12hr 0.02 0.09 0.10 0.08 0.04 Rain shwrs S S S S S S S C C C C C C S S S S S S S S Heat index 98 94 88 91 98 97 94 89 92100 99 96 90 Max heat 98 97 86 91 98 97 87 92 100 98 88 Date 05/23/26 Sun 05/24/26 Mon 05/25/26 Tue 05/26/26 Wed 05/27/26 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 76 86 76 86 76 85 80 86 Temp 83 86 81 77 82 85 83 80 82 83 82 81 83 85 83 82 84 85 Dewpt 78 78 78 77 78 78 78 78 77 77 78 78 77 77 78 77 77 77 PWind dir E E E E E E SE SE SE Wind char GN GN GN GN GN GN GN GN GN Avg clouds SC SC B1 B1 B1 B1 B1 B1 B1 B2 B2 B2 B1 B1 B1 B1 B1 B1 PoP 12hr 20 20 20 30 40 50 50 30 30 Rain shwrs S S S S S S C C C C C C C C C C C C Tstms S S S S S S S S S S S S S S S S $$ MPZ003-201800- Saipan International Airport-Obyan MP 15.11N 145.72E Elev. 215 ft 311 PM ChST Wed May 20 2026 Date Wed 05/20/26 Thu 05/21/26 Fri 05/22/26 Sat ChST3hrly 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 UTC 3hrly 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 Min/Max 76 87 76 88 76 Temp 87 85 82 79 77 77 83 87 86 84 81 78 77 77 83 88 87 85 82 78 77 Dewpt 76 76 75 75 76 76 77 77 77 77 78 77 77 77 77 77 77 78 78 78 77 RH 70 75 79 88 97 97 82 72 75 80 91 97100100 82 70 72 80 88100100 Wind dir E E E E E E E E E E E E E E E E E E E E E Wind spd 17 17 16 13 11 14 17 17 16 16 13 11 10 12 14 14 13 13 12 10 9 Clouds SC SC SC SC SC SC SC B1 B1 B1 B1 B1 B1 SC SC SC SC SC SC SC SC PoP 12hr 20 30 30 30 20 QPF 12hr 0.02 0.16 0.12 0.08 0.04 Rain shwrs S S S S S S S C C C C C C S S S S S S S S Heat index 97 94 88 91 98 98 94 89 92100 99 96 90 Max heat 98 97 86 91 98 97 87 92 100 98 88 Date 05/23/26 Sun 05/24/26 Mon 05/25/26 Tue 05/26/26 Wed 05/27/26 ChST6hrly 10 16 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6hrly 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 Max/Min 88 76 86 76 86 76 85 80 86 Temp 83 87 81 77 82 85 83 80 82 83 82 81 83 85 83 82 84 85 Dewpt 78 78 78 77 78 78 78 78 77 77 78 78 77 77 78 77 77 77 PWind dir E E E E E E E SE SE Wind char GN GN GN GN GN GN GN GN GN Avg clouds SC SC SC SC B1 B1 B1 B1 B1 B2 B2 B2 B1 B1 B1 B1 B1 B1 PoP 12hr 20 20 20 30 40 50 50 30 30 Rain shwrs S S S S S S C C C C C C C C C C C C Tstms S S S S S S S S S S S S S S S S $$