


Zone Forecast Product
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
989 FPMY50 PGUM 041800 ZFPGUM Zone Forecast for Guam and the Northern Marianas National Weather Service Tiyan GU 400 AM ChST Sun Oct 5 2025 GUZ001-MPZ001>003-050815- Guam-Rota-Tinian-Saipan- 400 AM ChST Sun Oct 5 2025 .TODAY...Partly sunny with isolated showers and thunderstorms. Light and variable winds. Highs near 87. Chance of showers 20 percent. .TONIGHT...Partly cloudy with isolated showers and thunderstorms. Light and variable winds. Lows around 78. Chance of showers 20 percent. .MONDAY THROUGH TUESDAY...Mostly cloudy with scattered showers and isolated thunderstorms. Southeast winds 10 to 20 mph. Highs around 86. Lows around 76. Chance of showers 50 percent. .TUESDAY NIGHT...Mostly cloudy with a 40 percent chance of showers and a slight chance of thunderstorms. Lows in the mid 70s. .WEDNESDAY THROUGH SATURDAY...Partly cloudy with a 20 percent chance of showers. Highs in the upper 80s. Lows in the upper 70s. $$