Zone Forecast Product
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
606 FPMY50 PGUM 060552 ZFPGUM Zone Forecast for Guam and the Northern Marianas National Weather Service Tiyan GU 352 PM ChST Sun Sep 6 2026 GUZ001-MPZ001>003-062230- Guam-Rota-Tinian-Saipan- 352 PM ChST Sun Sep 6 2026 .TONIGHT...Mostly cloudy with scattered showers in the evening, then partly cloudy with isolated showers after midnight. Isolated thunderstorms. Northwest winds around 10 mph in the evening becoming light. Lows around 78. Chance of showers 30 percent. .LABOR DAY...Partly cloudy with isolated showers in the morning, then mostly cloudy with scattered island-effect showers in the afternoon. Isolated thunderstorms. North winds around 5 mph. Highs around 87. Chance of showers 30 percent. .MONDAY NIGHT...Partly cloudy with isolated showers. North winds around 5 mph. Lows around 79. Chance of showers 20 percent. .TUESDAY...Partly cloudy with isolated showers. North winds 5 to 10 mph. Highs around 88. Chance of showers 20 percent. .TUESDAY NIGHT...Mostly cloudy with scattered showers and isolated thunderstorms. North winds 5 to 10 mph. Lows around 78. Chance of showers 30 percent. .WEDNESDAY...Partly cloudy with isolated showers and thunderstorms. North winds 10 to 15 mph. Highs around 87. Chance of showers 20 percent. .WEDNESDAY NIGHT THROUGH FRIDAY...Mostly cloudy with a 30 percent chance of showers. Lows in the upper 70s. Highs in the upper 80s. .FRIDAY NIGHT AND SATURDAY...Mostly cloudy with a 30 percent chance of showers and a slight chance of thunderstorms. Lows in the upper 70s. Highs in the upper 80s. .SATURDAY NIGHT AND SUNDAY...Partly cloudy with a 20 percent chance of showers. Lows in the upper 70s. Highs in the upper 80s. $$