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

Guam International Airport (PGUM)

Lat: 13.48°NLon: 144.8°EElev: 304ft.

Fair

80°F

27°C

Humidity 94%
Wind Speed Calm
Barometer 29.88 in (1011.1 mb)
Dewpoint 78°F (26°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 28 Sep 7:54 pm ChST
Extended Forecast for

Agana GU

  • Tonight

    Tonight: Isolated showers. Mostly cloudy, with a low around 78. West southwest wind 3 to 5 mph.

    Low: 78 °F

    Isolated
    Showers

  • Tuesday

    Tuesday: Scattered showers. Partly sunny, with a high near 88. West wind 5 to 7 mph. Chance of precipitation is 30%.

    High: 88 °F

    Scattered
    Showers

  • Tuesday Night

    Tuesday Night: Isolated showers. Partly cloudy, with a low around 78. West wind 3 to 7 mph.

    Low: 78 °F

    Isolated
    Showers

  • Wednesday

    Wednesday: Scattered showers. Partly sunny, with a high near 88. West wind 5 to 10 mph. Chance of precipitation is 30%.

    High: 88 °F

    Scattered
    Showers

  • Wednesday Night

    Wednesday Night: Scattered showers. Mostly cloudy, with a low around 78. West wind around 9 mph. Chance of precipitation is 40%.

    Low: 78 °F

    Scattered
    Showers

  • Thursday

    Thursday: Scattered showers. Mostly cloudy, with a high near 87. Chance of precipitation is 40%.

    High: 87 °F

    Scattered
    Showers

  • Thursday Night

    Thursday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 78.

    Low: 78 °F

    Chance
    Showers

  • Friday

    Friday: Showers likely. Mostly cloudy, with a high near 86.

    High: 86 °F

    Showers
    Likely

  • Friday Night

    Friday Night: Showers likely. Mostly cloudy, with a low around 78. Breezy.

    Low: 78 °F

    Showers
    Likely and
    Breezy

Detailed Forecast

Tonight
Isolated showers. Mostly cloudy, with a low around 78. West southwest wind 3 to 5 mph.
Tuesday
Scattered showers. Partly sunny, with a high near 88. West wind 5 to 7 mph. Chance of precipitation is 30%.
Tuesday Night
Isolated showers. Partly cloudy, with a low around 78. West wind 3 to 7 mph.
Wednesday
Scattered showers. Partly sunny, with a high near 88. West wind 5 to 10 mph. Chance of precipitation is 30%.
Wednesday Night
Scattered showers. Mostly cloudy, with a low around 78. West wind around 9 mph. Chance of precipitation is 40%.
Thursday
Scattered showers. Mostly cloudy, with a high near 87. Chance of precipitation is 40%.
Thursday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 78.
Friday
Showers likely. Mostly cloudy, with a high near 86.
Friday Night
Showers likely. Mostly cloudy, with a low around 78. Breezy.
Saturday
Showers likely. Mostly cloudy, with a high near 86. Breezy.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 78. Breezy.
Sunday
A chance of showers. Mostly cloudy, with a high near 86. Breezy.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 78. Breezy.
Monday
A chance of showers. Mostly cloudy, with a high near 86. Breezy.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Agana GU
 13.47°N 144.74°E
Last Update:
6:06 pm ChST Sep 28, 2026
Forecast Valid:
8pm ChST Sep 28, 2026-6pm ChST Oct 5, 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