FOMY50 PGUM 080601 PFMGUM Point Forecast Matrices National Weather Service Tiyan GU 401 PM ChST Wed Jul 8 2026 GUZ001-081800- Guam International Airport-Tiyan GU 13.48N 144.79E Elev. 248 ft 401 PM ChST Wed Jul 8 2026 Date Wed 07/08/26 Thu 07/09/26 Fri 07/10/26 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 75 87 76 88 77 Temp 81 78 77 76 77 82 87 86 84 81 78 76 77 84 89 88 86 82 79 77 Dewpt 79 78 77 76 77 78 78 78 78 79 78 76 77 78 78 78 78 78 78 77 RH 94100100100100 88 75 77 82 94100100100 82 70 72 77 88 97100 Wind dir S S S SE S S E N N NE NE NE NE NE NE NE NE NE NE N Wind spd 12 10 6 3 2 2 2 3 4 6 8 8 6 8 8 9 9 9 8 6 Clouds B1 B1 B1 B1 B1 B1 B1 B1 SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 60 40 30 20 20 QPF 12hr 0.12 0.12 0.07 0.04 0.03 Rain shwrs C C C C C C C C S S S S S S S S S S S S Tstms S S S S S S S S S S S S Heat index 89 92100 99 95 90 94103102 98 92 84 Max heat 97 96 92 100 98 86 94 103 101 90 High Surf Y Y Y Y Y Y Y Date 07/11/26 Sun 07/12/26 Mon 07/13/26 Tue 07/14/26 Wed 07/15/26 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 79 88 79 87 81 86 79 86 Temp 84 87 83 80 84 87 83 80 84 86 84 83 84 85 83 81 84 85 Dewpt 78 78 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 PWind dir N NE S S S SW SW SW SW Wind char GN LT LT LT LT LT GN GN GN Avg clouds SC SC B1 B1 B1 SC SC SC B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 PoP 12hr 20 40 40 30 20 30 30 30 30 Rain shwrs S S C C C C C S S S 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 $$ MPZ001-081800- Rota International Airport-Sinapalu MP 14.17N 145.23E Elev. 592 ft 401 PM ChST Wed Jul 8 2026 Date Wed 07/08/26 Thu 07/09/26 Fri 07/10/26 Sat ChST3hrly 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 UTC 3hrly 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 Min/Max 78 86 77 87 78 Temp 81 80 79 78 79 83 86 85 83 81 79 77 78 83 87 87 85 82 80 78 Dewpt 79 79 79 78 78 78 78 78 78 78 78 77 78 78 78 78 78 78 78 78 RH 94 97100100 97 85 77 80 85 91 97100100 85 75 75 80 88 94100 Wind dir S S S SE SE SE E NE NE NE NE NE NE NE NE NE NE NE NE N Wind spd 12 12 9 4 3 2 2 3 5 6 8 8 5 6 8 9 9 8 6 6 Clouds B1 B1 B1 B1 B1 B1 B1 B1 SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 60 40 30 20 20 QPF 12hr 0.14 0.09 0.09 0.03 0.04 Rain shwrs C C C C C C C C S S S S S S S S S S S S Tstms S S S S S S S S Heat index 91 86 92 97 96 93 89 93100 99 96 91 86 Max heat 96 96 85 92 9796 88 93 100 98 90 High Surf Y Y Y Y Y Y Y Date 07/11/26 Sun 07/12/26 Mon 07/13/26 Tue 07/14/26 Wed 07/15/26 ChST6hrly 10 16 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6hrly 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 Max/Min 86 79 87 79 86 81 84 79 85 Temp 83 85 82 79 84 86 83 80 83 85 84 84 84 84 82 80 83 84 Dewpt 78 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 PWind dir N NE S SE S S SW SW SW Wind char GN LT LT LT LT LT LT GN GN Avg clouds B1 B1 B1 B1 B1 SC B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 PoP 12hr 30 40 40 30 20 30 30 30 30 Rain shwrs C C C C C C C S S S C C C C C C C C Tstms S S S S S S S S S S S S S S S S S S $$ MPZ002-081800- Tinian-San Jose MP 14.97N 145.63E Elev. 74 ft 401 PM ChST Wed Jul 8 2026 Date Wed 07/08/26 Thu 07/09/26 Fri 07/10/26 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 76 88 77 Temp 82 80 79 78 79 84 87 86 84 81 78 76 77 83 88 88 85 82 80 78 Dewpt 79 79 79 78 78 78 78 78 78 78 78 76 77 78 78 78 78 78 78 78 RH 91 97100100 97 82 75 77 82 91100100100 85 72 72 80 88 94100 Wind dir S S S S S SE E E NE NE NE NE NE NE NE NE NE NE NE NE Wind spd 13 13 9 5 3 3 2 2 4 6 6 6 5 6 8 9 9 8 6 6 Clouds B1 B1 B1 B1 B1 B1 B1 B1 SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 40 40 30 20 20 QPF 12hr 0.06 0.05 0.05 0.02 0.06 Rain shwrs C C C C C C C C S S S S S S S S S S S S Tstms S S S S Heat index 92 89 94100 99 95 89 93101101 97 92 85 Max heat 98 97 86 94 100 98 87 93 101 100 90 High Surf Y Y Y Y Y Y Y Date 07/11/26 Sun 07/12/26 Mon 07/13/26 Tue 07/14/26 Wed 07/15/26 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 79 88 79 87 81 86 78 88 Temp 83 86 83 79 84 87 83 79 83 86 84 82 84 85 82 79 84 87 Dewpt 78 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 PWind dir NE NE S SE S S S SW SW Wind char GN LT LT LT LT LT LT LT GN Avg clouds B1 B1 B1 B1 B1 SC SC SC SC SC B1 B1 B1 B1 B1 B1 B1 B1 PoP 12hr 30 40 40 30 20 30 30 30 30 Rain shwrs C C C C C C C S S S 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 $$ MPZ003-081800- Saipan International Airport-Obyan MP 15.11N 145.72E Elev. 215 ft 401 PM ChST Wed Jul 8 2026 Date Wed 07/08/26 Thu 07/09/26 Fri 07/10/26 Sat ChST3hrly 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 UTC 3hrly 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 Min/Max 78 88 76 88 77 Temp 82 80 79 78 79 84 87 87 84 81 78 76 77 83 88 88 85 82 80 78 Dewpt 79 79 79 78 78 78 78 78 78 78 78 76 77 78 78 78 78 78 78 78 RH 91 97100100 97 82 75 75 82 91100100100 85 72 72 80 88 94100 Wind dir S S S S SE SE E E NE NE NE NE NE NE NE NE NE NE NE NE Wind spd 12 12 9 4 3 3 2 2 4 6 6 6 5 6 8 9 9 8 6 6 Clouds B1 B1 B1 B1 B1 B1 B1 B1 SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 40 40 30 20 20 QPF 12hr 0.06 0.04 0.05 0.02 0.07 Rain shwrs C C C C C C C C S S S S S S S S S S S S Tstms S S S S Heat index 92 86 94100 99 95 90 93102101 97 92 85 Max heat 98 97 85 94 100 98 88 93 102 100 90 High Surf Y Y Y Y Y Y Y Date 07/11/26 Sun 07/12/26 Mon 07/13/26 Tue 07/14/26 Wed 07/15/26 ChST6hrly 10 16 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6hrly 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 Max/Min 87 79 88 79 87 81 86 78 88 Temp 83 86 83 79 84 87 83 79 83 86 84 82 84 85 82 79 84 87 Dewpt 78 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 79 PWind dir NE NE S SE S S S SW SW Wind char GN LT LT LT LT LT LT LT GN Avg clouds B1 B1 B1 B1 B1 SC SC SC SC SC B1 B1 B1 B1 B1 B1 B1 B1 PoP 12hr 30 40 40 30 20 30 30 30 30 Rain shwrs C C C C C C C S S S C C C C C C C C Tstms S S S S S S S S S S S S S S S S S S $$