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

Late January Extreme Cold; Watching for Another East Coast Storm Threat This Weekend

Well below normal temperatures will continue for the eastern half of the Lower 48 this week. Another blast of arctic air will spread from the Plains through the East/Southeast Friday into Saturday with more record lows expected even into Florida. Forecasts are being monitored for increasing potential of another significant winter storm to impact the eastern United States this coming weekend. Read More >

Hazardous Weather Conditions

Current conditions at

Guam International Airport (PGUM)

Lat: 13.48°NLon: 144.8°EElev: 304ft.

Fair

76°F

24°C

Humidity 94%
Wind Speed SE 6 mph
Barometer 29.95 in (1013.5 mb)
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index76°F (24°C)
Last update 27 Jan 11:54 pm ChST
Extended Forecast for

Agana Heights GU

High Surf Advisory January 28, 12:33am until January 29, 06:00am
Click here for hazard details and duration
High Surf Advisory
  •  
    High Surf Advisory January 28, 12:33am until January 29, 06:00am

    NOW until 6:00am Thu

    High Surf Advisory

  • Overnight

    Low: 78 °F

    Scattered
    Showers

  • Wednesday

    Wednesday: Scattered showers. Partly sunny, with a high near 87. East southeast wind 6 to 10 mph. Chance of precipitation is 40%.

    High: 87 °F

    Scattered
    Showers

  • Wednesday Night

    Wednesday Night: Scattered showers. Mostly cloudy, with a low around 78. East southeast wind 3 to 7 mph. Chance of precipitation is 30%.

    Low: 78 °F

    Scattered
    Showers

  • Thursday

    Thursday: Isolated showers. Mostly sunny, with a high near 87. South southeast wind 5 to 8 mph becoming calm in the afternoon.

    High: 87 °F

    Isolated
    Showers

  • Thursday Night

    Thursday Night: Isolated showers. Partly cloudy, with a low around 78. Calm wind becoming north around 5 mph.

    Low: 78 °F

    Isolated
    Showers

  • Friday

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

    High: 87 °F

    Isolated
    Showers

  • Friday Night

    Friday Night: Partly cloudy, with a low around 78.

    Low: 78 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 87.

    High: 87 °F

    Mostly Sunny

Detailed Forecast

Overnight
Scattered showers and thunderstorms. Mostly cloudy, with a low around 78. East northeast wind around 6 mph. Chance of precipitation is 40%.
Wednesday
Scattered showers. Partly sunny, with a high near 87. East southeast wind 6 to 10 mph. Chance of precipitation is 40%.
Wednesday Night
Scattered showers. Mostly cloudy, with a low around 78. East southeast wind 3 to 7 mph. Chance of precipitation is 30%.
Thursday
Isolated showers. Mostly sunny, with a high near 87. South southeast wind 5 to 8 mph becoming calm in the afternoon.
Thursday Night
Isolated showers. Partly cloudy, with a low around 78. Calm wind becoming north around 5 mph.
Friday
Isolated showers. Mostly sunny, with a high near 87.
Friday Night
Partly cloudy, with a low around 78.
Saturday
Mostly sunny, with a high near 87.
Saturday Night
Mostly cloudy, with a low around 78.
Sunday
Partly sunny, with a high near 87.
Sunday Night
Partly cloudy, with a low around 78.
Monday
A chance of showers. Partly sunny, with a high near 86.
Monday Night
A chance of showers. Mostly cloudy, with a low around 78.
Tuesday
A chance of showers. Partly 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:
6:06 pm ChST Jan 27, 2026
Forecast Valid:
12am ChST Jan 28, 2026-6pm ChST Feb 3, 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