


Zone Forecast Product
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
368 FPMY50 PGUM 081703 ZFPGUM Zone Forecast for Guam and the Northern Marianas National Weather Service Tiyan GU 303 AM ChST Thu Oct 9 2025 GUZ001-MPZ001>003-090700- Guam-Rota-Tinian-Saipan- 303 AM ChST Thu Oct 9 2025 .TODAY...Partly sunny with isolated showers and thunderstorms. Northeast winds 10 to 15 mph. Highs around 87. Chance of showers 20 percent. .TONIGHT...Mostly cloudy with scattered showers and isolated thunderstorms. Northeast winds 10 to 15 mph. Lows around 77. Chance of showers 30 percent. .FRIDAY AND FRIDAY NIGHT...Partly cloudy with isolated showers and thunderstorms. East winds around 10 mph. Highs around 86. Lows around 77. Chance of showers 20 percent. .SATURDAY...Partly cloudy with isolated showers. Light and variable winds. Highs around 88. Chance of showers 20 percent. .SATURDAY NIGHT THROUGH TUESDAY...Partly cloudy with a 20 percent chance of showers. Lows in the upper 70s. Highs in the upper 80s. .TUESDAY NIGHT AND WEDNESDAY...Mostly cloudy. A 30 percent chance of showers and thunderstorms. Lows in the upper 70s. Highs in the mid 80s. $$