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 90%
Wind Speed N 6 mph
Barometer 29.83 in (1009.4 mb)
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index86°F (30°C)
Last update 19 Aug 10:54 pm ChST
Extended Forecast for

Santa Rosa GU

  • Tonight

    Tonight: Scattered showers and thunderstorms. Mostly cloudy, with a low around 76. North northeast wind 8 to 10 mph. Chance of precipitation is 40%.

    Low: 76 °F

    Scattered
    Showers

  • Thursday

    Thursday: Partly sunny, with a high near 86. Northeast wind around 10 mph.

    High: 86 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Isolated showers. Partly cloudy, with a low around 76. Northeast wind 5 to 9 mph becoming light after midnight.

    Low: 76 °F

    Isolated
    Showers

  • Friday

    Friday: Scattered showers, mainly after noon. Partly sunny, with a high near 87. Calm wind. Chance of precipitation is 30%.

    High: 87 °F

    Scattered
    Showers

  • Friday Night

    Friday Night: Isolated showers. Mostly cloudy, with a low around 77. Calm wind becoming west southwest 5 to 7 mph after midnight.

    Low: 77 °F

    Isolated
    Showers

  • Saturday

    Saturday: Scattered showers. Partly sunny, with a high near 86. Chance of precipitation is 40%.

    High: 86 °F

    Scattered
    Showers

  • Saturday Night

    Saturday Night: A 40 percent chance of showers. Mostly cloudy, with a low around 76.

    Low: 76 °F

    Chance
    Showers

  • Sunday

    Sunday: A chance of showers. Partly sunny, with a high near 86.

    High: 86 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 77.

    Low: 77 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Scattered showers and thunderstorms. Mostly cloudy, with a low around 76. North northeast wind 8 to 10 mph. Chance of precipitation is 40%.
Thursday
Partly sunny, with a high near 86. Northeast wind around 10 mph.
Thursday Night
Isolated showers. Partly cloudy, with a low around 76. Northeast wind 5 to 9 mph becoming light after midnight.
Friday
Scattered showers, mainly after noon. Partly sunny, with a high near 87. Calm wind. Chance of precipitation is 30%.
Friday Night
Isolated showers. Mostly cloudy, with a low around 77. Calm wind becoming west southwest 5 to 7 mph after midnight.
Saturday
Scattered showers. Partly sunny, with a high near 86. Chance of precipitation is 40%.
Saturday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 76.
Sunday
A chance of showers. Partly sunny, with a high near 86.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 77.
Monday
A chance of showers. Partly sunny, with a high near 85.
Monday Night
A chance of showers. Mostly cloudy, with a low around 76.
Tuesday
A chance of showers. Partly sunny, with a high near 85.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 76.
Wednesday
A chance of showers. Mostly cloudy, with a high near 84.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Santa Rosa GU
 13.4°N 144.67°E
Last Update:
6:05 pm ChST Aug 19, 2026
Forecast Valid:
11pm ChST Aug 19, 2026-6pm ChST Aug 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