National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Heavy Rain and Mountain Snow Lingers in California; Winter Storm Impacting the Great Lakes and Northeast U.S.

An atmospheric river will wind down through today across California with lingering heavy rainfall, heavy mountain snow, and gusty winds. A wintry mix of freezing rain, sleet, and snow will cause hazardous travel conditions for the Great Lakes into the northern Mid-Atlantic and southern New England today through Saturday morning. Areas of tree damage and power outages are possible. Read More >

Current conditions at

Guam International Airport (PGUM)

Lat: 13.48°NLon: 144.8°EElev: 304ft.

Fair

81°F

27°C

Humidity 82%
Wind Speed E 6 mph
Barometer 29.85 in (1010.0 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index87°F (31°C)
Last update 27 Dec 5:54 pm ChST
Extended Forecast for

Tamuning GU

  • Tonight

    Tonight: Scattered showers, mainly before midnight. Partly cloudy, with a low around 77. East wind around 10 mph. Chance of precipitation is 30%.

    Low: 77 °F

    Scattered
    Showers

  • Sunday

    Sunday: Isolated showers. Mostly sunny, with a high near 86. East northeast wind 10 to 14 mph.

    High: 86 °F

    Isolated
    Showers

  • Sunday Night

    Sunday Night: Isolated showers. Mostly cloudy, with a low around 77. East northeast wind 11 to 13 mph.

    Low: 77 °F

    Isolated
    Showers

  • Monday

    Monday: Isolated showers. Mostly sunny, with a high near 86. East northeast wind around 14 mph, with gusts as high as 18 mph.

    High: 86 °F

    Isolated
    Showers

  • Monday Night

    Monday Night: Isolated showers. Partly cloudy, with a low around 77. East wind around 14 mph.

    Low: 77 °F

    Isolated
    Showers

  • Tuesday

    Tuesday: Isolated showers. Partly sunny, with a high near 86.

    High: 86 °F

    Isolated
    Showers

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 77.

    Low: 77 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 86.

    High: 86 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 76.

    Low: 76 °F

    Partly Cloudy

Detailed Forecast

Tonight
Scattered showers, mainly before midnight. Partly cloudy, with a low around 77. East wind around 10 mph. Chance of precipitation is 30%.
Sunday
Isolated showers. Mostly sunny, with a high near 86. East northeast wind 10 to 14 mph.
Sunday Night
Isolated showers. Mostly cloudy, with a low around 77. East northeast wind 11 to 13 mph.
Monday
Isolated showers. Mostly sunny, with a high near 86. East northeast wind around 14 mph, with gusts as high as 18 mph.
Monday Night
Isolated showers. Partly cloudy, with a low around 77. East wind around 14 mph.
Tuesday
Isolated showers. Partly sunny, with a high near 86.
Tuesday Night
Mostly cloudy, with a low around 77.
Wednesday
Mostly sunny, with a high near 86.
Wednesday Night
Partly cloudy, with a low around 76.
New Year's Day
Mostly sunny, with a high near 86.
Thursday Night
Partly cloudy, with a low around 76.
Friday
Mostly sunny, with a high near 86.
Friday Night
Partly cloudy, with a low around 76.
Saturday
Mostly sunny, with a high near 87.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Tamuning GU
 13.49°N 144.79°E
Last Update:
6:05 pm ChST Dec 27, 2025
Forecast Valid:
6pm ChST Dec 27, 2025-6pm ChST Jan 3, 2026
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation