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.

A Few Clouds

80°F

27°C

Humidity 85%
Wind Speed E 3 mph
Barometer 29.89 in (1011.2 mb)
Dewpoint 75°F (24°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 1 Jan 10:54 pm ChST
Extended Forecast for

Sinajana GU

  • Tonight

    Tonight: Isolated showers. Partly cloudy, with a low around 76. East wind around 9 mph.

    Low: 76 °F

    Isolated
    Showers

  • Friday

    Friday: 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

  • Friday Night

    Friday Night: 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 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.

    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

Detailed Forecast

Tonight
Isolated showers. Partly cloudy, with a low around 76. East wind around 9 mph.
Friday
Mostly sunny, with a high near 86. East southeast wind 9 to 14 mph, with gusts as high as 18 mph.
Friday Night
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 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.
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
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ABOUT THIS FORECAST

 
Point Forecast:
Sinajana GU
 13.47°N 144.76°E
Last Update:
6:05 pm ChST Jan 1, 2026
Forecast Valid:
11pm ChST Jan 1, 2026-6pm ChST Jan 8, 2026
 
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Additional Resources

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