


Zone Forecast Product
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
211 FPMY50 PGUM 171730 ZFPGUM Zone Forecast for Guam and the Northern Marianas National Weather Service TIYAN GU 330 AM ChST Wed Jun 18 2025 GUZ001-MPZ001>003-180900- Guam-Rota-Tinian-Saipan- 330 AM ChST Wed Jun 18 2025 .TODAY...Partly cloudy with isolated showers. East winds 10 to 15 mph. Highs around 87. Chance of showers 20 percent. .TONIGHT...Partly cloudy with isolated showers. East winds 10 to 15 mph. Lows around 78. Chance of showers 20 percent. .JUNETEENTH THROUGH FRIDAY...Partly cloudy with isolated showers. East winds 10 mph. Highs around 87. Lows around 78. Chance of showers 20 percent. .FRIDAY NIGHT THROUGH SUNDAY NIGHT...Partly cloudy with a 20 percent chance of showers. Lows in the upper 70s. Highs in the upper 80s. .MONDAY THROUGH TUESDAY...Mostly cloudy with a 20 percent chance of showers. Highs in the upper 80s. Lows in the upper 70s. $$