FOMY50 PGUM 170011 PFMGUM Point Forecast Matrices National Weather Service Tiyan GU 1010 AM ChST Sat Oct 17 2026 GUZ001-170600- Guam International Airport-Tiyan GU 13.48N 144.79E Elev. 248 ft 1010 AM ChST Sat Oct 17 2026 Date Sat 10/17/26 Sun 10/18/26 Mon 10/19/26 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 85 76 84 75 84 Temp 85 84 82 80 78 77 77 81 84 83 81 79 77 76 76 80 84 83 Dewpt 77 77 78 78 78 77 77 78 78 79 79 79 77 76 76 79 79 79 RH 77 80 88 94100100100 91 82 88 94100100100100 97 85 88 Wind dir N N N N N N E SE SE S S S S S S SE SE SE Wind spd 18 21 23 24 39 48101 52 43 37 41 32 26 24 24 25 23 19 Wind gust 28 34 35 39 63 78162 85 69 59 65 51 42 39 39 39 36 31 Clouds B2 B2 B2 B2 B2 OV OV OV B2 B2 B2 B2 B1 B1 B1 B1 B1 B1 PoP 12hr 50 50 100 50 40 QPF 12hr 0.17 1.06 3.55 2.40 0.74 Rain shwrs S C C C C C L O C C C C S S C C C C Tstms S S C C C C C C C C C C S S S S Heat index 95 94 91 87 89 95 94 91 84 89 95 94 Max heat 91 95 94 84 89 95 93 89 95 Coast Flood W W W W W W W W W W W Flood A A A A A A A A A High Surf W W W W W W W W W W W Typhoon W W W W W W W W W W W W W W W W W W Date Tue 10/20/26 Wed 10/21/26 Thu 10/22/26 Fri 10/23/26 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 85 79 86 77 86 76 86 Temp 80 77 82 84 82 79 83 85 81 78 82 85 81 77 82 85 Dewpt 79 77 79 78 79 79 78 78 78 78 78 78 78 77 77 77 PWind dir SE E E E NE NE NE NE Wind char GN GN LT GN GN GN GN GN Avg clouds B1 B1 B1 B1 SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 40 30 20 20 20 20 20 20 Rain shwrs C C C S S S S S S S S S S S S S Tstms S $$ MPZ001-170600- Rota International Airport-Sinapalu MP 14.17N 145.23E Elev. 592 ft 1010 AM ChST Sat Oct 17 2026 Date Sat 10/17/26 Sun 10/18/26 Mon 10/19/26 ChST3hrly 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 UTC 3hrly 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 Max/Min 84 76 84 75 83 Temp 84 83 82 79 77 76 76 81 84 83 81 79 77 76 76 80 83 82 Dewpt 78 78 78 78 77 76 76 79 79 79 80 79 77 76 76 79 79 79 RH 82 85 88 97100100100 94 85 88 97100100100100 97 88 91 Wind dir N N NE NE NE NE E SE SE SE SE SE SE SE SE SE SE SE Wind spd 21 24 25 27 37 42 44 41 39 41 36 31 27 25 25 24 21 19 Wind gust 34 39 40 44 60 67 71 66 62 65 58 50 44 41 40 39 35 31 Clouds B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 B1 B2 B2 B2 B2 PoP 12hr 50 50 70 50 40 QPF 12hr 0.200.69 2.88 2.23 0.78 Rain shwrs S C C C C C C C C C C C S S C C C C Tstms S S C C C C C C C C C C S S S S Heat index 94 93 90 85 89 96 95 92 84 86 93 93 Max heat 89 94 92 89 96 94 86 93 Coast Flood W W W W W W W W W W W Flood A A A A A A A A A High Surf W W W W W W W W W W W Typhoon W W W W W W W W W W W W W W W W W W Date Tue 10/20/26 Wed 10/21/26 Thu 10/22/26 Fri 10/23/26 ChST6hrly 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6hrly 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 Min/Max 77 83 79 85 77 85 77 85 Temp 80 77 81 83 81 79 83 84 81 78 82 84 81 78 82 84 Dewpt 79 77 79 79 79 79 78 78 79 78 78 78 78 78 77 77 PWind dir SE E E E NE NE NE NE Wind char GN GN GN GN GN GN GN GN Avg clouds B1 B1 B1 B1 B1 SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 40 30 30 20 20 20 20 20 Rain shwrs C C C C C S S S S S S S S S S S Tstms S $$ MPZ002-170600- Tinian-San Jose MP 14.97N 145.63E Elev. 74 ft 1010 AM ChST Sat Oct 17 2026 Date Sat 10/17/26 Sun 10/18/26 Mon 10/19/26 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 85 76 84 75 84 Temp 85 84 82 80 78 77 77 81 84 83 81 79 77 76 76 80 84 83 Dewpt 78 78 78 78 78 77 77 79 79 80 80 79 77 76 76 79 79 79 RH 80 82 88 94100100100 94 85 91 97100100100100 97 85 88 Wind dir NE NE NE NE E E E E SE SE SE SE SE SE SE SE SE SE Wind spd 24 25 26 27 29 33 36 39 37 34 31 28 25 23 23 23 20 17 Wind gust 39 41 42 43 48 52 58 62 60 55 50 46 41 37 36 36 32 28 Clouds B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 B1 B2 B2 B2 B2 PoP 12hr 50 50 50 50 50 QPF 12hr 0.19 0.60 0.72 1.23 0.75 Rain shwrs S C C C C C C C C C C C S S C C C C Tstms S S S S S S C C C C C C S S S S Heat index 96 95 92 88 90 96 95 92 84 89 95 94 Max heat 90 96 94 84 90 96 94 89 95 Coast Flood W W W W W W W W W W W Flood A A A A A A A A A High Surf W W W W W W W W W W W Trop Storm W W W W W W W W W W W W W W W W W W Typhoon A A A A A A A A A A A A A A A A A A Date Tue 10/20/26 Wed 10/21/26 Thu 10/22/26 Fri 10/23/26 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 84 79 87 77 87 76 87 Temp 80 77 81 84 81 79 84 86 82 78 83 86 81 77 82 86 Dewpt 79 77 79 79 79 79 78 78 79 78 78 78 78 77 77 77 PWind dir SE E E E EE E E Wind char GN GN GN GN GN BZ GN GN Avg clouds B1 B1 B1 B1 B1 SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 50 30 30 20 20 20 20 20 Rain shwrs C C C C C S S S S S S S S S S S Tstms S $$ MPZ003-170600- Saipan International Airport-Obyan MP 15.11N 145.72E Elev. 215 ft 1010 AM ChST Sat Oct 17 2026 Date Sat 10/17/26 Sun 10/18/26 Mon 10/19/26 ChST3hrly 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 UTC 3hrly 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 Max/Min 85 76 84 75 84 Temp 85 84 82 80 78 77 77 81 84 83 81 79 77 76 76 80 84 83 Dewpt 78 78 78 78 78 77 77 79 80 80 80 79 77 76 76 79 79 79 RH 80 82 88 94100100100 94 88 91 97100100100100 97 85 88 Wind dir NE NE NE NE E E E E SE SE SE SE SE SE SE SE SE SE Wind spd 25 26 26 27 29 32 35 37 36 33 29 27 25 23 23 21 19 17 Wind gust 39 41 42 43 47 51 57 59 58 52 48 43 40 36 35 35 32 27 Clouds B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 B1 B2 B2 B2 B2 PoP 12hr 50 50 50 50 40 QPF 12hr 0.20 0.60 0.66 1.07 0.60 Rain shwrs S C C C C C C C C C C C S S C C C C Tstms S S S S S S C C C C C C S S S S Heat index 96 95 92 88 90 96 95 92 84 89 95 94 Max heat 91 96 94 84 90 96 94 89 95 Coast Flood W W W W W W W W W W W Flood A A A A A A A A A High Surf W W W W W W W W W W W Trop Storm W W W W W W W W W W W W W W W W W W Typhoon A A A A A A A A A A A A A A A A A A Date Tue 10/20/26 Wed 10/21/26 Thu 10/22/26 Fri 10/23/26 ChST6hrly 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6hrly 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 Min/Max 77 85 79 87 77 87 76 87 Temp 80 77 81 84 82 79 83 86 82 78 83 86 81 77 82 86 Dewpt 79 77 79 79 79 79 79 79 79 78 78 78 78 77 77 77 PWind dir SE E E E E E E E Wind char GN GN GN BZ BZ BZ GN GN Avg clouds B1 B1 B1 B1 B1 SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 40 30 30 20 20 20 20 20 Rain shwrs C C C C C S S S S S S S S S S S Tstms S $$