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.

A Few Clouds

80°F

27°C

Humidity 97%
Wind Speed NE 3 mph
Barometer 29.79 in (1007.9 mb)
Dewpoint 79°F (26°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 20 Aug 6:54 am ChST
Extended Forecast for

Santa Rosa GU

  • Today

    Today: Scattered showers and thunderstorms. Partly sunny, with a high near 86. East northeast wind around 10 mph. Chance of precipitation is 30%.

    High: 86 °F

    Scattered
    Showers

  • Tonight

    Tonight: Isolated showers. Partly cloudy, with a low around 76. East northeast wind 5 to 10 mph becoming light east after midnight.

    Low: 76 °F

    Isolated
    Showers

  • Friday

    Friday: Scattered showers, mainly after noon. Partly sunny, with a high near 87. Light and variable wind becoming southeast 5 to 7 mph in the morning. 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. West southwest wind 7 to 13 mph. Chance of precipitation is 30%.

    High: 86 °F

    Scattered
    Showers

  • Saturday Night

    Saturday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 76.

    Low: 76 °F

    Chance
    Showers

  • Sunday

    Sunday: A 30 percent 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

  • Monday

    Monday: A chance of showers. Partly sunny, with a high near 85.

    High: 85 °F

    Chance
    Showers

Detailed Forecast

Today
Scattered showers and thunderstorms. Partly sunny, with a high near 86. East northeast wind around 10 mph. Chance of precipitation is 30%.
Tonight
Isolated showers. Partly cloudy, with a low around 76. East northeast wind 5 to 10 mph becoming light east after midnight.
Friday
Scattered showers, mainly after noon. Partly sunny, with a high near 87. Light and variable wind becoming southeast 5 to 7 mph in the morning. 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. West southwest wind 7 to 13 mph. Chance of precipitation is 30%.
Saturday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 76.
Sunday
A 30 percent 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 am ChST Aug 20, 2026
Forecast Valid:
7am ChST Aug 20, 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