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

Storm Systems Continue to Impact the Pacific Northwest; Lake Effect Snow Continues

A second Pacific cold front will cross the Pacific Northwest Wednesday followed by another atmospheric river. Each of these features will bring additional periods of gusty winds, mountain snow, and heavy to excessive rainfall with renewed flooding. Heavy lake effect snow continues into Tuesday east of Lakes Erie and Ontario. Read More >

Hazardous Weather Conditions

Current conditions at

Guam International Airport (PGUM)

Lat: 13.48°NLon: 144.8°EElev: 304ft.

Partly Cloudy

87°F

31°C

Humidity 61%
Wind Speed E 15 mph
Barometer 29.86 in (1010.4 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index93°F (34°C)
Last update 16 Dec 11:54 am ChST
Extended Forecast for

Agana GU

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 87. East northeast wind around 15 mph, with gusts as high as 20 mph.

    High: 87 °F

    Mostly Sunny

  • Tonight

    Tonight: Scattered showers. Mostly cloudy, with a low around 78. East northeast wind 10 to 14 mph. Chance of precipitation is 30%.

    Low: 78 °F

    Scattered
    Showers

  • Wednesday

    Wednesday: Scattered showers. Partly sunny, with a high near 87. East wind 11 to 17 mph, with gusts as high as 22 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 wind 9 to 14 mph, with gusts as high as 18 mph. Chance of precipitation is 40%.

    Low: 78 °F

    Scattered
    Showers

  • Thursday

    Thursday: Isolated showers. Mostly sunny, with a high near 87. East wind 10 to 16 mph, with gusts as high as 20 mph.

    High: 87 °F

    Isolated
    Showers

  • Thursday Night

    Thursday Night: Isolated showers. Partly cloudy, with a low around 78.

    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: A chance of showers. Mostly cloudy, with a low around 78.

    Low: 78 °F

    Chance
    Showers

  • Saturday

    Saturday: A chance of showers. Partly sunny, with a high near 87.

    High: 87 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 87. East northeast wind around 15 mph, with gusts as high as 20 mph.
Tonight
Scattered showers. Mostly cloudy, with a low around 78. East northeast wind 10 to 14 mph. Chance of precipitation is 30%.
Wednesday
Scattered showers. Partly sunny, with a high near 87. East wind 11 to 17 mph, with gusts as high as 22 mph. Chance of precipitation is 40%.
Wednesday Night
Scattered showers. Mostly cloudy, with a low around 78. East wind 9 to 14 mph, with gusts as high as 18 mph. Chance of precipitation is 40%.
Thursday
Isolated showers. Mostly sunny, with a high near 87. East wind 10 to 16 mph, with gusts as high as 20 mph.
Thursday Night
Isolated showers. Partly cloudy, with a low around 78.
Friday
Isolated showers. Mostly sunny, with a high near 87.
Friday Night
A chance of showers. Mostly cloudy, with a low around 78.
Saturday
A chance of showers. Partly sunny, with a high near 87.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 78.
Sunday
Mostly sunny, with a high near 87.
Sunday Night
Partly cloudy, with a low around 78.
Monday
Mostly sunny, with a high near 87.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Agana GU
 13.47°N 144.74°E
Last Update:
11:28 am ChST Dec 16, 2025
Forecast Valid:
12pm ChST Dec 16, 2025-6pm ChST Dec 22, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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