| NWS Forecast for: Guam Issued by: National Weather Service Tiyan, GU Last Update: 357 AM ChST Thu Sep 10 2026 |  |
| Today: Partly sunny. Isolated showers in the morning, then scattered showers and isolated thunderstorms in the afternoon. Northeast winds 10 to 15 mph. Highs around 88. Chance of showers 40 percent. Tonight: Partly cloudy with isolated showers. Northeast winds around 10 mph in the evening becoming light. Lows around 77. Chance of showers 20 percent. Friday: Partly cloudy in the morning then becoming partly sunny. Isolated showers, except scattered afternoon island effect showers for guam. Light and variable winds. Highs around 89. Chance of showers 20 percent, except 30 percent for guam. Friday Night: Partly cloudy with isolated showers. Light and variable winds. Lows around 78. Chance of showers 20 percent. Saturday: Partly cloudy with isolated light showers, except mostly cloudy with scattered island effect showers in the afternoon for guam. Light and variable winds. Highs around 88. Chance of showers 20 percent, except 30 percent for guam. 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 with a 30 percent chance of showers and isolated thunderstorms. Lows in the upper 70s. highs in the mid 80s. | |
| Zone Forecast: Guam | |
Visit your local NWS office at: https://www.weather.gov/gum |