| NWS Forecast for: Guam Issued by: National Weather Service Tiyan, GU Last Update: 334 AM ChST Tue Sep 30 2025 | |
| Today: Partly sunny. Scattered showers and isolated thunderstorms. East winds around 10 mph in the morning becoming light. Highs around 87. Chance of showers 40 percent. Tonight: Mostly cloudy with isolated showers and thunderstorms. light and variable winds. Lows around 77. Chance of showers 20 percent. Wednesday: Partly sunny with scattered showers and isolated thunderstorms. East winds 10 to 15 mph. Highs around 87. Chance of showers 30 percent. Wednesday Night And Thursday: Mostly cloudy. Isolated showers. East winds around 10 mph. Lows around 78. Highs around 87. Chance of showers 20 percent. Thursday Night Through Friday Night: Partly cloudy with a 20 percent chance of showers and thunderstorms. Lows in the upper 70s. highs in the upper 80s. Saturday: Partly cloudy with a 20 percent chance of showers. Highs in the upper 80s. Saturday Night And Sunday: Partly cloudy with a 20 percent chance of showers and thunderstorms. Lows in the upper 70s. Highs in the upper 80s. Sunday Night: Mostly cloudy with a 20 percent chance of showers and thunderstorms. Lows in the upper 70s. Monday: Partly sunny with a 20 percent chance of showers and thunderstorms. Highs in the upper 80s. | |
| Zone Forecast: Guam | |
Visit your local NWS office at: https://www.weather.gov/gum |