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

78°F

26°C

Humidity 97%
Wind Speed NW 6 mph
Barometer 29.73 in (1005.9 mb)
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 15 Sep 4:54 am ChST
Extended Forecast for

Santa Rosa GU

  • Overnight

    Overnight: Scattered showers and thunderstorms. Mostly cloudy, with a low around 77. Light north northwest wind. Chance of precipitation is 40%.

    Low: 77 °F

    Scattered
    Showers

  • Tuesday

    Tuesday: Scattered showers and thunderstorms, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 86. North northwest wind 5 to 9 mph. Chance of precipitation is 60%.

    High: 86 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Scattered showers and thunderstorms. Mostly cloudy, with a low around 75. North northwest wind 5 to 9 mph. Chance of precipitation is 50%.

    Low: 75 °F

    Scattered
    Showers

  • Wednesday

    Wednesday: Isolated showers. Mostly sunny, with a high near 87. West northwest wind 8 to 11 mph.

    High: 87 °F

    Isolated
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 77. West wind 7 to 10 mph.

    Low: 77 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 87.

    High: 87 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of showers. Mostly cloudy, with a low around 79.

    Low: 79 °F

    Chance
    Showers

  • Friday

    Friday: A chance of showers. Partly sunny, with a high near 87.

    High: 87 °F

    Chance
    Showers

  • Friday Night

    Friday 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 77. Light north northwest wind. Chance of precipitation is 40%.
Tuesday
Scattered showers and thunderstorms, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 86. North northwest wind 5 to 9 mph. Chance of precipitation is 60%.
Tuesday Night
Scattered showers and thunderstorms. Mostly cloudy, with a low around 75. North northwest wind 5 to 9 mph. Chance of precipitation is 50%.
Wednesday
Isolated showers. Mostly sunny, with a high near 87. West northwest wind 8 to 11 mph.
Wednesday Night
Mostly cloudy, with a low around 77. West wind 7 to 10 mph.
Thursday
Partly sunny, with a high near 87.
Thursday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 79.
Friday
A chance of showers. Partly sunny, with a high near 87.
Friday Night
A chance of showers. Mostly cloudy, with a low around 79.
Saturday
Mostly sunny, with a high near 87.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 79.
Sunday
A chance of showers. Partly sunny, with a high near 87.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 79.
Monday
A chance of showers. Partly sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Santa Rosa GU
 13.4°N 144.67°E
Last Update:
3:23 am ChST Sep 15, 2026
Forecast Valid:
5am ChST Sep 15, 2026-6pm ChST Sep 21, 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