FPMY50 PGUM 151803 ZFPGUM Zone Forecast for Guam and the Northern Marianas National Weather Service Tiyan GU 403 AM ChST Fri Oct 16 2026 GUZ001-MPZ001-160900- Guam-Rota- 403 AM ChST Fri Oct 16 2026 ...FLOOD WATCH NOW IN EFFECT THROUGH SUNDAY AFTERNOON... ...TYPHOON WATCH REMAINS IN EFFECT... .TODAY...Partly cloudy with isolated showers. Northeast winds 10 to 15 mph. Highs around 86. Chance of showers 20 percent. .TONIGHT...Mostly cloudy with isolated showers. Northeast winds 10 to 15 mph. Lows around 76. Chance of showers 20 percent. .SATURDAY...Partly cloudy in the morning then becoming partly sunny. Isolated showers. North winds 15 to 20 mph. Highs around 84. Chance of showers 20 percent. .SATURDAY NIGHT...Winds possibly rising to tropical storm force. North winds 20 to 25 mph increasing to 35 to 45 mph after midnight. Mostly cloudy. Isolated showers and thunderstorms in the evening, then scattered showers and isolated thunderstorms after midnight. Lows around 76. Chance of showers 50 percent. .SUNDAY...Typhoon force winds possible. East winds 70 to 80 mph becoming south and decreasing to 45 to 55 mph in the afternoon. Cloudy. Torrential rain and isolated thunderstorms in the morning, then scattered showers and isolated thunderstorms in the afternoon. Locally heavy rainfall possible in the morning. Highs around 82. Chance of showers near 100 percent. .SUNDAY NIGHT...Windy. Mostly cloudy. Scattered showers and isolated thunderstorms in the evening, then isolated showers after midnight. Lows in the mid 70s. Chance of showers 50 percent. .MONDAY...Breezy. Cloudy with a 50 percent chance of showers and a slight chance of thunderstorms. Highs in the upper 70s. .MONDAY NIGHT THROUGH WEDNESDAY NIGHT...Breezy. Mostly cloudy with a 30 percent chance of showers. Lows in the upper 70s. Highs in the mid 80s. .THURSDAY...Partly sunny with a chance of showers and a slight chance of thunderstorms. Highs in the mid 80s. Chance of showers 30 percent. $$ MPZ002-003-160900- Tinian-Saipan- 403 AM ChST Fri Oct 16 2026 ...FLOOD WATCH IN EFFECT THROUGH SUNDAY AFTERNOON... ...TYPHOON WATCH IN EFFECT... .TODAY...Partly cloudy with isolated showers. Northeast winds 15 to 20 mph. Highs around 87. Chance of showers 20 percent. .TONIGHT...Mostly cloudy with scattered showers. Northeast winds 15 to 20 mph. Lows around 78. Chance of showers 30 percent. .SATURDAY...Breezy. Partly sunny with isolated showers. Northeast winds 20 to 25 mph. Highs around 85. Chance of showers 20 percent. .SATURDAY NIGHT...Very windy. Northeast winds 30 to 40 mph. Mostly cloudy with scattered showers and isolated thunderstorms. Lows around 78. Chance of showers 30 percent. .SUNDAY...Tropical storm force winds possible. East winds 35 to 45 mph. Mostly cloudy with scattered showers and isolated thunderstorms. Highs around 83. Chance of showers 50 percent. .SUNDAY NIGHT...Windy. Mostly cloudy. Scattered showers and isolated thunderstorms in the evening, then isolated showers after midnight. Lows in the mid 70s. Chance of showers 50 percent. .MONDAY...Breezy. Cloudy with a 50 percent chance of showers and a slight chance of thunderstorms. Highs in the mid 80s. .MONDAY NIGHT THROUGH WEDNESDAY...Breezy. Mostly cloudy with a 40 percent chance of showers. Lows in the upper 70s. Highs in the mid 80s. .WEDNESDAY NIGHT...Mostly cloudy with a 30 percent chance of showers and a slight chance of thunderstorms. Lows in the upper 70s. .THURSDAY...Partly sunny with a 30 percent chance of showers. Highs in the mid 80s. $$