Zone Forecast Product
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
471 FPMY50 PGUM 281752 ZFPGUM Zone Forecast for Guam and the Northern Marianas National Weather Service Tiyan GU 352 AM ChST Sat Aug 29 2026 GUZ001-290900- Guam- 352 AM ChST Sat Aug 29 2026 .TODAY...Mostly cloudy with numerous showers and isolated thunderstorms. Locally heavy showers possible. Northwest winds 10 to 15 mph. Gusts to 25 mph possible near heavier showers. Highs around 86. Chance of showers 60 percent. .TONIGHT...Mostly cloudy with scattered showers and isolated thunderstorms. Northwest winds 10 to 15 mph. Lows around 77. Chance of showers 40 percent. .SUNDAY THROUGH MONDAY...Mostly cloudy with scattered showers and isolated thunderstorms. Locally heavy showers possible. West winds 10 to 15 mph. Gusts to 25 mph possible near heavier showers. Highs around 86. Lows around 75. Chance of showers 50 percent. .MONDAY NIGHT AND TUESDAY...Mostly cloudy. A 50 percent chance of showers and a slight chance of thunderstorms. Locally heavy showers possible. Lows in the mid 70s. Highs in the upper 80s. .TUESDAY NIGHT...Cloudy with showers likely and a slight chance of thunderstorms. Locally heavy showers possible. Lows in the mid 70s. Chance of showers 70 percent. .WEDNESDAY THROUGH FRIDAY...Breezy. Mostly cloudy with a 40 percent chance of showers and a slight chance of thunderstorms. Highs in the mid 80s. Lows in the upper 70s. $$ MPZ001>003-290900- Rota-Tinian-Saipan- 352 AM ChST Sat Aug 29 2026 .TODAY...Partly sunny with scattered showers and isolated thunderstorms. Locally heavy showers possible for Rota in the morning. Light and variable winds becoming northwest around 10 mph in the afternoon. Highs around 87. Chance of showers 40 percent. .TONIGHT...Mostly cloudy with scattered showers and isolated thunderstorms. Northwest winds 10 to 15 mph. Lows around 77. Chance of showers 50 percent. .SUNDAY AND SUNDAY NIGHT...Mostly cloudy. Scattered showers and isolated thunderstorms. Locally heavy showers possible. West winds 10 to 15 mph. Highs around 86. Lows around 78. Chance of showers 40 percent. .MONDAY...Partly sunny with scattered showers and isolated thunderstorms. Light and variable winds. Highs around 87. Chance of showers 30 percent. .MONDAY NIGHT THROUGH FRIDAY...Breezy. Mostly cloudy with a 40 percent chance of showers and a slight chance of thunderstorms. Lows in the upper 70s. Highs in the mid 80s. $$