


Zone Forecast Product
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
173 FPMY50 PGUM 161705 ZFPGUM Zone Forecast for Guam and the Northern Marianas National Weather Service TIYAN GU 305 AM ChST Sat May 17 2025 GUZ001-MPZ001>003-171030- Guam-Rota-Tinian-Saipan- 305 AM ChST Sat May 17 2025 .TODAY...Partly cloudy with isolated showers. East winds 15 to 20 mph. Highs around 87. Chance of showers 20 percent. .TONIGHT THROUGH MONDAY...Partly cloudy with isolated showers. East winds 15 to 20 mph. Highs around 89. Lows around 78. Chance of showers 20 percent. .MONDAY NIGHT THROUGH FRIDAY...Partly cloudy with a 20 percent chance of showers. Lows in the upper 70s. Highs in the upper 80s. $$