


Zone Forecast Product
Issued by NWS Tiyan, Guam
Issued by NWS Tiyan, Guam
886 FPMY50 PGUM 191700 ZFPGUM Zone Forecast for Guam and the Northern Marianas National Weather Service TIYAN GU 300 AM ChST Sun Apr 20 2025 GUZ001-MPZ001>003-200930- Guam-Rota-Tinian-Saipan- 300 AM ChST Sun Apr 20 2025 .TODAY...Partly cloudy with isolated showers. East winds 10 to 15 mph. Highs near 87. Chance of showers 20 percent. .TONIGHT...Mostly cloudy with scattered showers. East winds 10 to 15 mph. Lows around 78. Chance of showers 30 percent. .MONDAY...Mostly sunny with isolated light showers. East winds 10 to 15 mph. Highs near 87. Chance of showers 10 percent. .MONDAY NIGHT AND TUESDAY...Partly cloudy with isolated showers. East winds 10 to 15 mph. Lows around 78. Highs near 87. Chance of showers 20 percent. .TUESDAY NIGHT THROUGH SATURDAY...Partly cloudy with a 20 percent chance of showers. Lows in the upper 70s. Highs in the upper 80s. $$