Zone Forecast Product
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
304 FPMY50 PGUM 221751 ZFPGUM Zone Forecast for Guam and the Northern Marianas National Weather Service Tiyan GU 351 AM ChST Thu Jul 23 2026 GUZ001-MPZ001>003-230930- Guam-Rota-Tinian-Saipan- 351 AM ChST Thu Jul 23 2026 .TODAY...Partly cloudy with isolated showers in the morning, then partly sunny with scattered showers and isolated thunderstorms in the afternoon. Light and variable winds. Highs around 87. Chance of showers 30 percent. .TONIGHT...Mostly cloudy with isolated showers. Light and variable winds. Lows around 78. Chance of showers 20 percent. .FRIDAY...Partly cloudy with isolated showers in the morning, then mostly cloudy with scattered showers and isolated thunderstorms in the afternoon. Light and variable winds. Highs around 88. Chance of showers 30 percent. .FRIDAY NIGHT AND SATURDAY...Partly cloudy with isolated showers. Light and variable winds. Lows around 79. Highs around 88. Chance of showers 20 percent. .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...Partly cloudy with a 20 percent chance of showers and thunderstorms. Lows in the upper 70s. Highs in the upper 80s. $$