National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Guam International Airport (PGUM)

Lat: 13.48°NLon: 144.8°EElev: 304ft.

Partly Cloudy

85°F

29°C

Humidity 80%
Wind Speed Vrbl 6 mph
Barometer 29.88 in (1011.0 mb)
Dewpoint 78°F (26°C)
Visibility 10.00 mi
Heat Index97°F (36°C)
Last update 20 Sep 10:54 am ChST
Extended Forecast for

2 Miles WNW Dededo GU

Flood Advisory until September 20, 01:15pm
Click here for hazard details and duration
...
  •  
    Flood Advisory until September 20, 01:15pm

    NOW until 1:15pm Sun

    Flood Advisory

  • This Afternoon

    High: 88 °F

    Scattered
    Showers

  • Tonight

    Tonight: Scattered showers and thunderstorms. Mostly cloudy, with a low around 77. Calm wind. Chance of precipitation is 50%.

    Low: 77 °F

    Scattered
    Showers

  • Monday

    Monday: Scattered showers and thunderstorms. Partly sunny, with a high near 88. Calm wind becoming southeast 5 to 9 mph in the morning. Chance of precipitation is 30%.

    High: 88 °F

    Scattered
    Showers

  • Monday Night

    Monday Night: Scattered showers and thunderstorms. Mostly cloudy, with a low around 77. South wind 3 to 7 mph. Chance of precipitation is 40%.

    Low: 77 °F

    Scattered
    Showers

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 86. Light south southeast wind increasing to 6 to 11 mph in the morning. Chance of precipitation is 60%.

    High: 86 °F

    Heavy Rain

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Cloudy, with a low around 77. Chance of precipitation is 60%.

    Low: 77 °F

    Heavy Rain

  • Wednesday

    Wednesday: Scattered showers and thunderstorms. Mostly cloudy, with a high near 86. Chance of precipitation is 50%.

    High: 86 °F

    Scattered
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers. Mostly cloudy, with a low around 78.

    Low: 78 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Scattered showers and thunderstorms. Mostly cloudy, with a high near 88. West northwest wind 3 to 5 mph. Chance of precipitation is 50%.
Tonight
Scattered showers and thunderstorms. Mostly cloudy, with a low around 77. Calm wind. Chance of precipitation is 50%.
Monday
Scattered showers and thunderstorms. Partly sunny, with a high near 88. Calm wind becoming southeast 5 to 9 mph in the morning. Chance of precipitation is 30%.
Monday Night
Scattered showers and thunderstorms. Mostly cloudy, with a low around 77. South wind 3 to 7 mph. Chance of precipitation is 40%.
Tuesday
Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 86. Light south southeast wind increasing to 6 to 11 mph in the morning. Chance of precipitation is 60%.
Tuesday Night
Showers likely and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Cloudy, with a low around 77. Chance of precipitation is 60%.
Wednesday
Scattered showers and thunderstorms. Mostly cloudy, with a high near 86. Chance of precipitation is 50%.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 78.
Thursday
A chance of showers. Mostly cloudy, with a high near 86.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 77.
Friday
A chance of showers. Mostly cloudy, with a high near 86.
Friday Night
A chance of showers. Mostly cloudy, with a low around 77.
Saturday
A chance of showers. Partly sunny, with a high near 86.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WNW Dededo GU
 13.52°N 144.81°E
Last Update:
10:57 am ChST Sep 20, 2026
Forecast Valid:
12pm ChST Sep 20, 2026-6pm ChST Sep 26, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation