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

77°F

25°C

Humidity 85%
Wind Speed NE 7 mph
Barometer 29.83 in (1009.4 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 27 Dec 2:54 am ChST
Extended Forecast for

Sinajana GU

  • Overnight

    Overnight: Isolated showers. Partly cloudy, with a low around 77. East wind around 9 mph.

    Low: 77 °F

    Isolated
    Showers

  • Saturday

    Saturday: Isolated showers. Partly sunny, with a high near 87. East wind 10 to 13 mph.

    High: 87 °F

    Isolated
    Showers

  • Saturday Night

    Saturday Night: Isolated showers. Mostly cloudy, with a low around 77. East wind around 11 mph.

    Low: 77 °F

    Isolated
    Showers

  • Sunday

    Sunday: Isolated showers. Mostly sunny, with a high near 86. East northeast wind 11 to 14 mph.

    High: 86 °F

    Isolated
    Showers

  • Sunday Night

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

    Low: 77 °F

    Isolated
    Showers

  • Monday

    Monday: Isolated showers. Mostly sunny, with a high near 87.

    High: 87 °F

    Isolated
    Showers

  • Monday Night

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

    Low: 77 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 87.

    High: 87 °F

    Mostly Sunny

  • Tuesday Night

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

    Low: 77 °F

    Partly Cloudy

Detailed Forecast

Overnight
Isolated showers. Partly cloudy, with a low around 77. East wind around 9 mph.
Saturday
Isolated showers. Partly sunny, with a high near 87. East wind 10 to 13 mph.
Saturday Night
Isolated showers. Mostly cloudy, with a low around 77. East wind around 11 mph.
Sunday
Isolated showers. Mostly sunny, with a high near 86. East northeast wind 11 to 14 mph.
Sunday Night
Isolated showers. Mostly cloudy, with a low around 77. East wind 11 to 13 mph.
Monday
Isolated showers. Mostly sunny, with a high near 87.
Monday Night
Partly cloudy, with a low around 77.
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
Mostly cloudy, with a low around 77.
New Year's Day
Mostly sunny, with a high near 87.
Thursday Night
Partly cloudy, with a low around 76.
Friday
Mostly sunny, with a high near 86.
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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 Dec 26, 2025
Forecast Valid:
3am ChST Dec 27, 2025-6pm ChST Jan 2, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation