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.

Light Rain

77°F

25°C

Humidity 96%
Wind Speed Calm
Barometer 29.92 in (1012.2 mb)
Dewpoint 76°F (24°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 19 Sep 11:54 pm ChST
Extended Forecast for

Asan GU

  • Overnight

    Overnight: Scattered showers and thunderstorms. Mostly cloudy, with a low around 79. Light and variable wind. Chance of precipitation is 40%.

    Low: 79 °F

    Scattered
    Showers

  • Sunday

    Sunday: Scattered showers and thunderstorms. Mostly cloudy, with a high near 87. Calm wind becoming west around 6 mph in the morning. Chance of precipitation is 50%.

    High: 87 °F

    Scattered
    Showers

  • Sunday Night

    Sunday Night: Scattered showers and thunderstorms. Mostly cloudy, with a low around 78. Light and variable wind. Chance of precipitation is 50%.

    Low: 78 °F

    Scattered
    Showers

  • Monday

    Monday: Scattered showers and thunderstorms. Mostly cloudy, with a high near 87. Calm wind becoming south southeast 5 to 7 mph in the morning. Chance of precipitation is 50%.

    High: 87 °F

    Scattered
    Showers

  • Monday Night

    Monday Night: Scattered showers and thunderstorms. Mostly cloudy, with a low around 78. South wind around 6 mph. Chance of precipitation is 40%.

    Low: 78 °F

    Scattered
    Showers

  • Tuesday

    Tuesday: Scattered showers and thunderstorms. Mostly cloudy, with a high near 87. Chance of precipitation is 50%.

    High: 87 °F

    Scattered
    Showers

  • Tuesday Night

    Tuesday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 78.

    Low: 78 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers. Mostly cloudy, with a high near 87.

    High: 87 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers. Mostly cloudy, with a low around 79.

    Low: 79 °F

    Chance
    Showers

Detailed Forecast

Overnight
Scattered showers and thunderstorms. Mostly cloudy, with a low around 79. Light and variable wind. Chance of precipitation is 40%.
Sunday
Scattered showers and thunderstorms. Mostly cloudy, with a high near 87. Calm wind becoming west around 6 mph in the morning. Chance of precipitation is 50%.
Sunday Night
Scattered showers and thunderstorms. Mostly cloudy, with a low around 78. Light and variable wind. Chance of precipitation is 50%.
Monday
Scattered showers and thunderstorms. Mostly cloudy, with a high near 87. Calm wind becoming south southeast 5 to 7 mph in the morning. Chance of precipitation is 50%.
Monday Night
Scattered showers and thunderstorms. Mostly cloudy, with a low around 78. South wind around 6 mph. Chance of precipitation is 40%.
Tuesday
Scattered showers and thunderstorms. Mostly cloudy, with a high near 87. Chance of precipitation is 50%.
Tuesday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 78.
Wednesday
A chance of showers. Mostly cloudy, with a high near 87.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 79.
Thursday
A chance of showers. Partly sunny, with a high near 87.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 79.
Friday
A chance of showers. Mostly cloudy, with a high near 87.
Friday Night
A chance of showers. Mostly cloudy, with a low around 79.
Saturday
A chance of showers. Partly sunny, with a high near 88.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Asan GU
 13.47°N 144.72°E
Last Update:
6:06 pm ChST Sep 19, 2026
Forecast Valid:
12am 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