


Zone Forecast Product
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
524 FPMY50 PGUM 011750 ZFPGUM Zone Forecast for Guam and the Northern Marianas National Weather Service Tiyan GU 350 AM ChST Tue Sep 2 2025 GUZ001-MPZ001>003-020900- Guam-Rota-Tinian-Saipan- 350 AM ChST Tue Sep 2 2025 .TODAY...Mostly cloudy with scattered showers and isolated thunderstorms. East winds 10 to 15 mph. Highs near 87. Chance of showers 50 percent. .TONIGHT...Mostly cloudy with scattered showers and isolated thunderstorms. Southeast winds 10 to 15 mph. Lows around 78. Chance of showers 50 percent. .WEDNESDAY...Partly sunny with scattered showers and isolated thunderstorms. Southeast winds 10 to 15 mph. Highs near 86. Chance of showers 30 percent. .WEDNESDAY NIGHT AND THURSDAY...Mostly cloudy. Isolated showers and thunderstorms. East winds around 10 mph. Lows around 78. Highs around 87. Chance of showers 20 percent. .THURSDAY NIGHT THROUGH MONDAY...Mostly cloudy with a 20 percent chance of showers and thunderstorms. Lows around 78. Highs in the upper 80s. $$