FPMY50 PGUM 150522 ZFPGUM Zone Forecast for Guam and the Northern Marianas National Weather Service Tiyan GU 322 PM ChST Thu Oct 15 2026 GUZ001-MPZ001-152000- Guam-Rota- 322 PM ChST Thu Oct 15 2026 ...TYPHOON WATCH IN EFFECT... .TONIGHT...Mostly cloudy with isolated showers. Northeast winds 10 to 15 mph. Lows around 78. Chance of showers 20 percent. .FRIDAY...Partly cloudy with isolated showers. Northeast winds 10 to 15 mph. Highs around 86. Chance of showers 20 percent. .FRIDAY NIGHT...Mostly cloudy with scattered showers. Northeast winds 10 to 15 mph. Lows around 76. Chance of showers 30 percent. .SATURDAY...Mostly cloudy with scattered showers and isolated thunderstorms. North to northeast winds 10 to 15 mph. Highs near 86. Chance of showers 50 percent. .SATURDAY NIGHT...Tropical storm conditions possible. Northeast winds 15 to 25 mph increasing to 40 to 50 mph near midnight. Cloudy. Periods of torrential rain, widespread heavy showers and scattered thunderstorms. Lows around 77. Chance of showers near 100 percent. .SUNDAY...Typhoon conditions are possible. West tropical storm force winds of 60 to 70 mph with gusts to 100 mph, becoming south and decreasing to 45 to 55 mph with gusts to 80 mph in the afternoon. Periods of torrential rain, widespread heavy showers and scattered thunderstorms. Highs near 82. Chance of showers near 100 percent. .SUNDAY NIGHT...Tropical storm conditions possible. Cloudy with widespread heavy showers and isolated thunderstorms. Lows in the mid 70s. Chance of showers 70 percent. .MONDAY...Very windy. Cloudy with a 50 percent chance of showers and a slight chance of thunderstorms. Highs in the mid 80s. .MONDAY NIGHT AND TUESDAY...Windy. Mostly cloudy. A 40 percent chance of showers. Lows in the upper 70s. Highs in the upper 80s. .TUESDAY NIGHT AND WEDNESDAY...Breezy. Mostly cloudy. A 30 percent chance of showers. Lows in the upper 70s. Highs in the upper 80s. .WEDNESDAY NIGHT AND THURSDAY...Mostly cloudy with a 30 percent chance of showers. Lows in the upper 70s. Highs in the upper 80s. $$ MPZ002-003-152000- Tinian-Saipan- 322 PM ChST Thu Oct 15 2026 ...TYPHOON WATCH IN EFFECT... .TONIGHT...Partly cloudy with isolated showers. Northeast winds 10 to 15 mph. Lows around 78. Chance of showers 20 percent. .FRIDAY...Breezy. Partly cloudy with isolated showers. Northeast winds 15 to 20 mph. Highs near 88. Chance of showers 20 percent. .FRIDAY NIGHT...Breezy. Mostly cloudy with scattered showers. Northeast winds 15 to 20 mph. Lows around 78. Chance of showers 30 percent. .SATURDAY...Breezy. Mostly cloudy with scattered showers and isolated thunderstorms. Northeast winds 15 to 25 mph. Highs near 86. Chance of showers 50 percent. .SATURDAY NIGHT...Tropical storm conditions possible. Northeast winds 20 to 25 mph increasing to 40 to 50 mph near midnight. Cloudy. Periods of torrential rain, widespread heavy showers and scattered thunderstorms. Lows around 77. Chance of showers near 100 percent. .SUNDAY...Typhoon conditions are possible. Northeast to east tropical storm force winds of 60 to 70 mph with gusts to 100 mph, becoming southeast and decreasing to 45 to 55 mph with gusts to 80 mph in the afternoon. Periods of torrential rain, widespread heavy showers and scattered thunderstorms. Highs near 82. Chance of showers near 100 percent. .SUNDAY NIGHT...Tropical storm conditions possible. Cloudy with widespread heavy showers and isolated thunderstorms. Lows in the mid 70s. Chance of showers 70 percent. .MONDAY...Very windy. Cloudy with showers likely and a slight chance of thunderstorms. Highs in the lower 80s. Chance of showers 70 percent. .MONDAY NIGHT AND TUESDAY...Windy. Mostly cloudy. A 40 percent chance of showers. Lows in the upper 70s. Highs in the upper 80s. .TUESDAY NIGHT THROUGH THURSDAY...Breezy. Mostly cloudy. A 30 percent chance of showers. Lows in the upper 70s. Highs in the upper 80s. $$