


Zone Forecast Product
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
701 FPMY50 PGUM 111757 ZFPGUM Zone Forecast for Guam and the Northern Marianas National Weather Service Tiyan GU 357 AM ChST Tue Aug 12 2025 GUZ001-120900- Guam- 357 AM ChST Tue Aug 12 2025 .TODAY...Partly cloudy with isolated showers in the morning, then partly sunny with scattered showers and isolated thunderstorms in the afternoon. Southeast winds around 10 mph in the morning becoming light. Highs around 88. Chance of showers 30 percent. .TONIGHT...Partly cloudy with isolated showers. Light and variable winds. Lows around 77. Chance of showers 20 percent. .WEDNESDAY...Partly cloudy with isolated showers becoming partly sunny with scattered showers in the afternoon. Isolated thunderstorms. Light and variable winds. Highs around 88. Chance of showers 30 percent. .WEDNESDAY NIGHT...Partly cloudy with isolated showers. Light and variable winds. Lows around 77. Chance of showers 20 percent. .THURSDAY...Partly cloudy with a 20 percent chance of showers. Light and variable winds. Highs around 88. Lows around 77. .THURSDAY NIGHT THROUGH MONDAY...Partly cloudy with a 20 percent chance of showers. Lows in the upper 70s. Highs in the upper 80s. $$ MPZ001>003-120900- Rota-Tinian-Saipan- 357 AM ChST Tue Aug 12 2025 .TODAY...Partly sunny with isolated showers and thunderstorms. Southeast winds around 10 mph in the morning becoming light. Highs around 87. Chance of showers 20 percent. .TONIGHT...Partly cloudy with isolated showers. Light and variable winds. Lows around 79. Chance of showers 20 percent. .WEDNESDAY...Partly cloudy with isolated showers and thunderstorms. Light and variable winds. Highs around 87. Chance of showers 20 percent. .WEDNESDAY NIGHT...Partly cloudy with isolated showers. Light and variable winds. Lows around 77. Chance of showers 20 percent. .THURSDAY...Partly cloudy with a 20 percent chance of showers. Light and variable winds. Highs around 87. .THURSDAY NIGHT THROUGH MONDAY...Partly cloudy with a 20 percent chance of showers. Lows in the upper 70s. Highs in the upper 80s. $$