FNMY50 PGUM 181634 FWFGUM Fire Weather Planning Forecast for Guam National Weather Service Tiyan GU 234 AM ChST Tue May 19 2026 .Discussion... 0.02 inches of rain fell at Guam International Airport yesterday, which allowed the KBDI to rise to 270. This remains in the low category for fire danger. Breezy and dry weather is in store for the next couple of days, likely allowing the KBDI to continue to increase. GUZ001-191645- Guam- 234 AM ChST Tue May 19 2026 Today Tonight Wed Cloud Cover Pcldy Pcldy Pcldy Precip Type Showers Showers Showers Chance Rain (%) 20 20 20 Temp 87 76 87 RH % 73 99 70 20FtWnd-Val/AM(mph) E 11 E 12 20FtWnd-Rdg/PM(mph) E 12 E 11 E 13 Mixing Hgt(ft-msl) 6384 174 6362 Transport Wnd (mph) E 23 E 9 E 24 $$ .Forecast for Days 3 Through 7... .WEDNESDAY NIGHT...Partly cloudy with isolated showers. Lows in the upper 70s. East winds 10 to 15 mph. .THURSDAY...Partly sunny with isolated showers. Highs in the upper 80s. East winds 10 to 15 mph. .THURSDAY NIGHT...Partly cloudy with a slight chance of showers. Lows in the upper 70s. East winds 10 to 15 mph. .FRIDAY...Partly sunny with a slight chance of showers. Highs in the upper 80s. East winds 10 to 15 mph. .FRIDAY NIGHT...Mostly cloudy with a slight chance of showers. Lows in the upper 70s. East winds 10 to 15 mph. .SATURDAY...Partly sunny with chance of showers. Highs in the mid 80s. East winds 10 to 15 mph. .SATURDAY NIGHT...Mostly cloudy with chance of showers and a slight chance of thunderstorms. Lows in the upper 70s. East winds 5 to 15 mph. .SUNDAY...Partly sunny with chance of showers and a slight chance of thunderstorms. Highs in the mid 80s. East winds 10 to 15 mph. .SUNDAY NIGHT...Mostly cloudy with chance of showers and a slight chance of thunderstorms. Lows in the lower 80s. East winds 5 to 10 mph. .MONDAY...Partly sunny with chance of showers and a slight chance of thunderstorms. Highs in the lower 80s. East winds 5 to 15 mph. $$