| NWS Forecast for: Guam Issued by: National Weather Service Tiyan, GU Last Update: 332 PM ChST Tue Oct 27 2026 |  |
| Tonight: Partly cloudy with isolated showers. Light and variable winds. Lows around 77. Chance of showers 20 percent. Wednesday: Partly sunny with isolated showers in the morning, then partly cloudy with scattered island effect showers and isolated thunderstorms in the afternoon. 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 And Thursday Night: Partly cloudy with isolated showers. North winds 10 to 15 mph. Highs around 87. Lows around 78. Chance of showers 20 percent. Friday: Mostly sunny with isolated showers. West winds 15 to 20 mph. Highs around 87. Chance of showers 20 percent. Friday Night Through Saturday Night: Partly cloudy with a 10 percent chance of showers. Lows in the upper 70s. Highs in the upper 80s. Sunday Through Tuesday: Partly cloudy with a 20 percent chance of showers. Highs in the upper 80s. Lows in the upper 70s. | |
| Zone Forecast: Guam | |
Visit your local NWS office at: https://www.weather.gov/gum |