| NWS Forecast for: Guam Issued by: National Weather Service Tiyan, GU Last Update: 408 PM ChST Tue Jan 20 2026 |  |
| Tonight: Partly cloudy with isolated light showers. Light and variable winds becoming northeast around 10 mph after midnight. Lows around 77. Chance of showers 10 percent. Wednesday: Partly sunny. Isolated showers and thunderstorms. East winds 10 to 15 mph. Highs near 87. Chance of showers 20 percent. Wednesday Night: Mostly cloudy with scattered showers and isolated thunderstorms. East winds 10 to 15 mph with gusts to 25 mph near heavy showers. Lows around 77. Chance of showers 40 percent. Thursday And Thursday Night: Mostly cloudy. Scattered showers and isolated thunderstorms. Southeast winds 10 to 15 mph with gusts to 25 mph near heavy showers. Highs near 87. Lows around 77. Chance of showers 50 percent. Friday: Partly sunny with isolated showers and thunderstorms. southeast winds 15 to 20 mph. Highs near 86. Chance of showers 20 percent. Friday Night: Partly cloudy with a 20 percent chance of showers. Lows in the upper 70s. Saturday And Saturday Night: Mostly cloudy. A 20 percent chance of showers. Highs in the mid 80s. Lows in the upper 70s. Sunday: Partly sunny with a 20 percent chance of showers. Highs in the upper 80s. Sunday Night Through Monday Night: Breezy. Mostly cloudy with a 30 percent chance of showers and a slight chance of thunderstorms. Lows in the upper 70s. Highs in the mid 80s. Tuesday: Breezy. Partly sunny with a 30 percent chance of showers. Highs in the mid 80s. | |
| Zone Forecast: Guam | |
Visit your local NWS office at: https://www.weather.gov/gum |