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

Heavy Snow in the Northwest; Wintry Mix from the Great Lakes to Northeast

Two cold fronts will pass through the Northwest U.S. this week with the main impact being heavy mountain snow across the Cascades, and northern Rockies. A quick moving storm system will bring mixed precipitation including some freezing rain to the Upper Midwest and Great Lakes today then the Northeast U.S. tonight into Wednesday. Read More >

Hazardous Weather Conditions

Current conditions at

Guam International Airport (PGUM)

Lat: 13.48°NLon: 144.8°EElev: 304ft.

Overcast

81°F

27°C

Humidity 88%
Wind Speed E 14 G 21 mph
Barometer 29.91 in (1011.9 mb)
Dewpoint 77°F (25°C)
Visibility 7.00 mi
Heat Index88°F (31°C)
Last update 7 Jan 10:54 am ChST
Extended Forecast for

Sinajana GU

High Surf Advisory January 7, 11:06am until January 7, 04:00pm
Click here for hazard details and duration
High Surf Advisory
  •  
    High Surf Advisory January 7, 11:06am until January 7, 04:00pm

    NOW until 4:00pm Wed

    High Surf Advisory

  • Today

    High: 87 °F

    Scattered
    Showers

  • Tonight

    Tonight: Scattered showers. Mostly cloudy, with a low around 77. East northeast wind 11 to 16 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    Low: 77 °F

    Scattered
    Showers

  • Thursday

    Thursday: Scattered showers. Partly sunny, with a high near 87. East northeast wind 11 to 16 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    High: 87 °F

    Scattered
    Showers

  • Thursday Night

    Thursday Night: Isolated showers. Partly cloudy, with a low around 76. Northeast wind 9 to 13 mph.

    Low: 76 °F

    Isolated
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 89. Northeast wind 14 to 20 mph, with gusts as high as 25 mph.

    High: 89 °F

    Mostly Sunny

  • Friday Night

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

    Low: 76 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 89.

    High: 89 °F

    Mostly Sunny

  • Saturday Night

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

    Low: 76 °F

    Partly Cloudy

Detailed Forecast

Today
Scattered showers. Partly sunny, with a high near 87. East northeast wind around 17 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.
Tonight
Scattered showers. Mostly cloudy, with a low around 77. East northeast wind 11 to 16 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Thursday
Scattered showers. Partly sunny, with a high near 87. East northeast wind 11 to 16 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Thursday Night
Isolated showers. Partly cloudy, with a low around 76. Northeast wind 9 to 13 mph.
Friday
Mostly sunny, with a high near 89. Northeast wind 14 to 20 mph, with gusts as high as 25 mph.
Friday Night
Partly cloudy, with a low around 76.
Saturday
Mostly sunny, with a high near 89.
Saturday Night
Partly cloudy, with a low around 76.
Sunday
Mostly sunny, with a high near 89.
Sunday Night
Partly cloudy, with a low around 76.
Monday
Mostly sunny, with a high near 89.
Monday Night
Partly cloudy, with a low around 76.
Tuesday
Mostly sunny, with a high near 89.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sinajana GU
 13.47°N 144.76°E
Last Update:
6:05 am ChST Jan 7, 2026
Forecast Valid:
11am ChST Jan 7, 2026-6pm ChST Jan 13, 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