Current conditions at

Guam International Airport (PGUM)

Lat: 13.48° N Lon: 144.8° E Elev: 304 ft.

Overcast

82°F

28°C

Humidity 90%
Wind Speed N 14 G 21 mph
Barometer 29.67 in (1003.8 mb)
Dewpoint 79°F (26°C)
Visibility 8.00 mi
Heat Index91°F (33°C)
Last update 5 Jul 6:54 am ChST
Detailed forecast for

Guam

Today
Windy in the morning, with tropical storm conditions possible late afternoon. Cloudy. Numerous heavy showers and isolated thunderstorms in the morning, becoming periods of rain, widespread heavy showers and scattered thunderstorms in the afternoon. North winds 25 to 30 mph, becoming 30 to 40 mph late afternoon. Highs near 84. Chance of showers near 100 percent.
Tonight
Tropical storm conditions expected. North winds 30 to 40 mph becoming northwest and increasing to 50 to 60 mph after midnight. Cloudy. Widespread heavy showers and scattered thunderstorms. Lows around 75. Chance of showers near 100 percent.
Monday
Typhoon conditions expected. Southwest to south winds 60 to 80 mph with gusts to 100 mph, decreasing to 40 to 60 mph in the late afternoon. Cloudy. Periods of rain, widespread heavy showers and scattered thunderstorms. Highs around 83. Chance of showers near 100 percent.
Monday Night
Tropical storm conditions expected. South winds 35 to 45 mph with gusts to 65 mph. Cloudy. Periods of rain, widespread heavy showers in the evening, then numerous showers after midnight. scattered thunderstorms. Lows around 75. Chance of showers near 100 percent.
Tuesday
Very windy. South winds 25 to 35 mph with gusts to 50 mph. Cloudy with numerous showers and isolated thunderstorms. Locally heavy showers possible. Highs around 85. Chance of showers 60 percent.
Tuesday Night And Wednesday
Breezy. Mostly cloudy with a 50 percent chance of showers and a slight chance of thunderstorms. Lows in the upper 70s. Highs in the mid 80s.
Wednesday Night And Thursday
Mostly cloudy. A 40 percent chance of showers and a slight chance of thunderstorms. Lows in the upper 70s. Highs in the mid to upper 80s.
Thursday Night
Mostly cloudy with a 30 percent chance of showers and a slight chance of thunderstorms. Lows in the upper 70s.
Friday
Partly sunny with a 30 percent chance of showers and a slight chance of thunderstorms. Highs in the upper 80s.
Friday Night
Mostly cloudy with a 20 percent chance of showers. Lows in the upper 70s.
Saturday
Partly cloudy with a 20 percent chance of showers. Highs in the upper 80s.



Basemap Options
Click map to change the forecast location
Loading map...
259 AM ChST Sun Jul 5 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database