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

83°F

28°C

Humidity 85%
Wind Speed SW 10 mph
Barometer 29.79 in (1007.9 mb)
Dewpoint 78°F (26°C)
Visibility 10.00 mi
Heat Index93°F (34°C)
Last update 18 Sep 5:54 pm ChST
Extended Forecast for

Apra Harbor GU

  • Tonight

    Tonight: Scattered showers and thunderstorms. Mostly cloudy, with a low around 85. West southwest wind 5 to 11 mph. Chance of precipitation is 50%.

    Low: 85 °F

    Scattered
    Showers

  • Saturday

    Saturday: Scattered showers and thunderstorms. Partly sunny, with a high near 86. West southwest wind 6 to 9 mph. Chance of precipitation is 50%.

    High: 86 °F

    Scattered
    Showers

  • Saturday Night

    Saturday Night: Scattered showers and thunderstorms. Mostly cloudy, with a low around 85. West wind 3 to 8 mph. Chance of precipitation is 40%.

    Low: 85 °F

    Scattered
    Showers

  • Sunday

    Sunday: Scattered showers and thunderstorms. Partly sunny, with a high near 88. West northwest wind around 5 mph becoming calm in the morning. Chance of precipitation is 30%.

    High: 88 °F

    Scattered
    Showers

  • Sunday Night

    Sunday Night: Scattered showers and thunderstorms. Mostly cloudy, with a low around 85. West southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%.

    Low: 85 °F

    Scattered
    Showers

  • Monday

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

    High: 87 °F

    Scattered
    Showers

  • Monday Night

    Monday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 85.

    Low: 85 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers. Mostly cloudy, with a high near 86.

    High: 86 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers. Mostly cloudy, with a low around 85.

    Low: 85 °F

    Chance
    Showers

Detailed Forecast

Tonight
Scattered showers and thunderstorms. Mostly cloudy, with a low around 85. West southwest wind 5 to 11 mph. Chance of precipitation is 50%.
Saturday
Scattered showers and thunderstorms. Partly sunny, with a high near 86. West southwest wind 6 to 9 mph. Chance of precipitation is 50%.
Saturday Night
Scattered showers and thunderstorms. Mostly cloudy, with a low around 85. West wind 3 to 8 mph. Chance of precipitation is 40%.
Sunday
Scattered showers and thunderstorms. Partly sunny, with a high near 88. West northwest wind around 5 mph becoming calm in the morning. Chance of precipitation is 30%.
Sunday Night
Scattered showers and thunderstorms. Mostly cloudy, with a low around 85. West southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%.
Monday
Scattered showers and thunderstorms. Mostly cloudy, with a high near 87. Chance of precipitation is 50%.
Monday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 85.
Tuesday
A chance of showers. Mostly cloudy, with a high near 86.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 85.
Wednesday
A chance of showers. Mostly cloudy, with a high near 86.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 85.
Thursday
A chance of showers. Partly sunny, with a high near 86.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 85.
Friday
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:
Apra Harbor GU
 13.42°N 144.67°E
Last Update:
6:06 pm ChST Sep 18, 2026
Forecast Valid:
6pm ChST Sep 18, 2026-6pm ChST Sep 25, 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