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

Lake Effect Snow through Friday; Heavy Rain, Thunderstorms and Mountain Snow in California

Periods of moderate to heavy lake effect snow will continue through Friday downwind of Lake Erie and Ontario. Several additional inches of accumulating snow are expected. A Pacific storm will bring heavy rain and mountain snow across California, the Southwest and Intermountain West today. Isolated severe thunderstorms and scattered flash flooding is possible across parts of southern California. Read More >

Current conditions at

Guam International Airport (PGUM)

Lat: 13.48°NLon: 144.8°EElev: 304ft.

Fair

77°F

25°C

Humidity 85%
Wind Speed E 5 mph
Barometer 29.87 in (1010.7 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 2 Jan 6:54 am ChST
Extended Forecast for

Agana Heights GU

  • Today

    Today: Mostly sunny, with a high near 86. East southeast wind 9 to 14 mph, with gusts as high as 18 mph.

    High: 86 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 76. East southeast wind 5 to 9 mph becoming calm after midnight.

    Low: 76 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 86. East northeast wind 3 to 7 mph.

    High: 86 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Isolated showers. Partly cloudy, with a low around 77. Northeast wind around 8 mph.

    Low: 77 °F

    Isolated
    Showers

  • Sunday

    Sunday: Mostly sunny, with a high near 86. Northeast wind 9 to 14 mph.

    High: 86 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 77.

    Low: 77 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 87.

    High: 87 °F

    Mostly Sunny

  • Monday Night

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

    Low: 76 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 87.

    High: 87 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 86. East southeast wind 9 to 14 mph, with gusts as high as 18 mph.
Tonight
Partly cloudy, with a low around 76. East southeast wind 5 to 9 mph becoming calm after midnight.
Saturday
Mostly sunny, with a high near 86. East northeast wind 3 to 7 mph.
Saturday Night
Isolated showers. Partly cloudy, with a low around 77. Northeast wind around 8 mph.
Sunday
Mostly sunny, with a high near 86. Northeast wind 9 to 14 mph.
Sunday Night
Partly cloudy, with a low around 77.
Monday
Mostly sunny, with a high near 87.
Monday Night
Partly cloudy, with a low around 76.
Tuesday
Mostly sunny, with a high near 87.
Tuesday Night
Partly cloudy, with a low around 77.
Wednesday
Mostly sunny, with a high near 87.
Wednesday Night
Partly cloudy, with a low around 77.
Thursday
Mostly sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Agana Heights GU
 13.47°N 144.74°E
Last Update:
6:05 am ChST Jan 2, 2026
Forecast Valid:
7am ChST Jan 2, 2026-6pm ChST Jan 8, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation