


Zone Forecast Product
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
740 FPMY50 PGUM 240542 ZFPGUM Zone Forecast for Guam and the Northern Marianas National Weather Service TIYAN GU Issued by National Weather Service Honolulu HI 342 PM ChST Tue Jun 24 2025 GUZ001-MPZ001>003-242000- Guam-Rota-Tinian-Saipan- 342 PM ChST Tue Jun 24 2025 .TONIGHT...Mostly cloudy with scattered showers and isolated thunderstorms. East to northeast winds around 10 mph. Lows near 77. Chance of showers 40 percent. .WEDNESDAY...Partly sunny with scattered showers and isolated thunderstorms. East to southeast winds 10 to 15 mph. Highs around 87. Chance of showers 30 percent. .WEDNESDAY NIGHT...Mostly cloudy with scattered showers and isolated thunderstorms. Southeast winds 10 to 20 mph. Gusts of 30 mph possible near showers. Lows near 78. Chance of showers 50 percent. .THURSDAY THROUGH FRIDAY...Cloudy with numerous showers and isolated thunderstorms. South to southeast winds 10 to 15 mph. Highs around 85. Lows around 78. Chance of showers 70 percent. .FRIDAY NIGHT THROUGH SATURDAY NIGHT...Cloudy with locally heavy showers likely and a slight chance of thunderstorms. Lows in the upper 70s. Highs in the mid 80s. Chance of showers 70 percent. .SUNDAY THROUGH MONDAY...Mostly cloudy with a 50 percent chance of showers and a slight chance of thunderstorms. Highs in the mid 80s. Lows in the upper 70s. .MONDAY NIGHT AND TUESDAY...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. $$