Point Forecast Matrices
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
000 FOMY50 PGUM 080601 PFMGUM Point Forecast Matrices National Weather Service Tiyan GU 401 PM ChST Tue Sep 8 2026 GUZ001-081800- Guam International Airport-Tiyan GU 13.48N 144.79E Elev. 248 ft 401 PM ChST Tue Sep 8 2026 Date Tue 09/08/26 Wed 09/09/26 Thu 09/10/26 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 78 86 78 86 76 Temp 84 82 80 78 79 83 86 85 84 82 80 78 79 83 86 85 83 81 78 77 Dewpt 78 78 78 78 78 78 78 79 79 79 79 78 79 78 78 78 79 79 78 77 RH 82 88 94100 97 85 77 82 85 91 97100100 85 77 80 88 94100100 Wind dir N N N N N N N N N NE NE E NE NE NE NE NE NE NE NE Wind spd 6 5 5 6 8 8 8 8 8 6 5 4 4 5 5 5 5 5 4 3 Clouds SC SC B1 B1 B1 B1 B1 B1 SC SC SC SC B1 B1 B1 B1 SC SC SC SC PoP 12hr 30 30 30 30 30 QPF 12hr 0.11 0.23 0.10 0.08 0.03 Rain shwrs S S S S C C C C S S S S C C C C S S S S Tstms S S S S S S Heat index 95 91 86 92 98 98 95 92 86 93 98 97 94 89 Max heat 99 98 90 92 98 97 90 93 98 96 86 Date 09/11/26 Sat 09/12/26 Sun 09/13/26 Mon 09/14/26 Tue 09/15/26 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 89 76 89 76 89 79 86 76 89 Temp 84 88 82 77 84 88 82 77 84 88 84 80 83 85 81 77 84 88 Dewpt 78 78 79 77 78 78 78 77 78 78 78 78 78 78 79 77 79 79 PWind dir NE NE E SE SE E E NE N Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 20 10 10 20 20 20 20 20 20 Rain shwrs S S S S S S S S S S S S S S S S S S $$ MPZ001-081800- Rota International Airport-Sinapalu MP 14.17N 145.23E Elev. 592 ft 401 PM ChST Tue Sep 8 2026 Date Tue 09/08/26 Wed 09/09/26 Thu 09/10/26 Fri ChST3hrly 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 UTC 3hrly 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 Min/Max 78 86 78 86 77 Temp 84 82 80 78 79 83 86 85 84 82 80 78 79 83 86 85 84 81 79 78 Dewpt 78 78 78 78 78 78 78 79 79 79 79 78 79 79 79 79 79 79 79 78 RH 82 88 94100 97 85 77 82 85 91 97100100 88 80 82 85 94100100 Wind dir N N N N N N N N NE NE NE E E E NE NE NE NE NE NE Wind spd 6 6 6 6 8 8 9 9 8 6 5 5 5 5 5 5 5 6 5 4 Clouds SC SC B1 B1 B1 B1 B1 B1 SC SC SC SC B1 B1 B1 B1 SC SC SC SC PoP 12hr 20 30 30 30 30 QPF 12hr 0.12 0.14 0.06 0.09 0.04 Rain shwrs S S S S C C C C S S S S C C C C S S S S Tstms S S S S S S Heat index 94 91 85 92 98 98 95 92 86 93 99 98 95 90 Max heat 97 96 89 92 98 97 90 93 99 97 89 Date 09/11/26 Sat 09/12/26 Sun 09/13/26 Mon 09/14/26 Tue 09/15/26 ChST6hrly 10 16 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6hrly 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 Max/Min 86 77 87 76 87 78 84 77 87 Temp 83 86 81 78 83 87 81 77 83 87 82 78 81 83 80 78 83 87 Dewpt 79 78 78 78 78 78 78 77 78 78 78 78 78 78 79 78 79 79 PWind dir NE NE E SE SE E E NE N Wind char LT LT LT LT LT LT LT LT LT Avg clouds SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 20 20 20 10 20 20 20 20 20 Rain shwrs S S S S S S S S S S S S S S S S S S $$ MPZ002-081800- Tinian-San Jose MP 14.97N 145.63E Elev. 74 ft 401 PM ChST Tue Sep 8 2026 Date Tue 09/08/26 Wed 09/09/26 Thu 09/10/26 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 78 86 78 86 76 Temp 84 82 80 78 79 83 86 85 84 82 80 78 79 83 86 85 83 81 78 77 Dewpt 78 79 79 78 79 78 78 79 79 80 80 78 79 79 79 79 79 79 78 77 RH 82 91 97100100 85 77 82 85 94100100100 88 80 82 88 94100100 Wind dir N N N N NE NE NE NE NE NE E E E E E NE NE E NE NE Wind spd 5 6 6 5 8 9 9 8 8 8 8 6 6 8 6 6 6 6 5 4 Clouds SC SC B1 B1 B1 B1 SC SC SC SC SC SC B1 B1 B1 B1 B1 B1 B1 B1 PoP 12hr 30 30 20 30 30 QPF 12hr 0.21 0.24 0.07 0.24 0.14 Rain shwrs S S C C C C S S S S S S C C C C C C C C Tstms S S S S Heat index 96 92 86 93 98 98 95 92 86 94 99 98 94 90 Max heat 99 98 90 93 98 97 91 94 99 97 86 Date 09/11/26 Sat 09/12/26 Sun 09/13/26 Mon 09/14/26 Tue 09/15/26 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 89 76 89 76 89 77 86 76 89 Temp 84 88 82 77 84 88 82 77 84 88 82 77 82 85 81 77 84 88 Dewpt 79 79 79 77 78 78 78 77 78 78 78 77 78 79 79 77 79 79 PWind dir NE NE E SE SE E E NE N Wind char LT LT LT LT LT LT LT LT LT Avg clouds B1 SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 30 20 20 10 10 20 20 20 20 Rain shwrs C S S S S S S S S S S S S S S S S S $$ MPZ003-081800- Saipan International Airport-Obyan MP 15.11N 145.72E Elev. 215 ft 401 PM ChST Tue Sep 8 2026 Date Tue 09/08/26 Wed 09/09/26 Thu 09/10/26 Fri ChST3hrly 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 UTC 3hrly 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 Min/Max 78 86 78 86 77 Temp 84 82 80 78 79 83 86 85 84 82 80 78 79 83 86 85 83 81 79 77 Dewpt 78 79 79 78 79 79 78 79 79 80 80 78 79 79 79 79 79 79 79 77 RH 82 91 97100100 88 77 82 85 94100100100 88 80 82 88 94100100 Wind dir N N N N NE NE NE NE NE E E E E E E NE E E NE NE Wind spd 5 6 5 5 8 9 9 8 8 9 8 6 8 9 8 6 6 6 5 4 Clouds SC SC B1 B1 B1 B1 SC SC SC SC SC SC B1 B1 B1 B1 B1 B1 B1 B1 PoP 12hr 30 30 20 30 30 QPF 12hr 0.24 0.28 0.07 0.36 0.18 Rain shwrs S S C C C C S S S S S S C C C C C C C C Tstms S S S S Heat index 96 92 86 93 98 98 96 92 86 94 99 98 95 90 Max heat 99 98 91 93 98 97 91 94 99 97 89 Date 09/11/26 Sat 09/12/26 Sun 09/13/26 Mon 09/14/26 Tue 09/15/26 ChST6hrly 10 16 22 04 10 16 22 04 10 16 22 04 10 16 22 04 10 16 UTC 6hrly 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 Max/Min 89 76 89 76 89 77 87 76 89 Temp 84 88 82 77 84 88 82 77 84 88 83 78 83 86 81 77 84 88 Dewpt 79 79 79 77 78 78 78 77 78 78 78 78 79 79 79 77 79 79 PWind dir NE NE E SE SE E E NE N Wind char LT LT LT LT LT LT LT LT LT Avg clouds B1 SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC PoP 12hr 30 20 20 10 10 20 20 20 20 Rain shwrs C S S S S S S S S S S S S S S S S S $$