Lake-effect Snow and Whiteout Conditions in the Great Lakes Region; Below-average Temperatures in the East

Heavy lake-effect and lake-enhanced snow will persist downwind of the Great Lakes and produce some whiteout conditions that could cause difficult travel conditions. A coastal low will produce moderate to heavy snow over parts of southern and eastern New England into the afternoon. Below average temperatures are expected across the eastern U.S., particularly with chilly morning temperatures. Read More >

Current conditions at

Guam International Airport (PGUM)

Lat: 13.48°NLon: 144.8°EElev: 304ft.

A Few Clouds

86°F

30°C

Humidity 63%
Wind Speed E 10 G 20 mph
Barometer 29.73 in (1006.0 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index92°F (33°C)
Last update 19 Jan 12:54 pm ChST
Extended Forecast for

3 Miles S Agat GU

  • M.L.King Day

    M.L.King Day: Isolated showers.  Mostly sunny, with a high near 85. East wind around 21 mph, with gusts as high as 26 mph.

    High: 85 °F

    Isolated
    Showers

  • Tonight

    Tonight: Isolated showers.  Partly cloudy, with a low around 74. East wind 13 to 18 mph decreasing to 6 to 11 mph. Winds could gust as high as 25 mph.

    Low: 74 °F

    Isolated
    Showers

  • Tuesday

    Tuesday: Isolated showers.  Mostly sunny, with a high near 85. East northeast wind 6 to 11 mph increasing to 13 to 18 mph in the morning. Winds could gust as high as 24 mph.

    High: 85 °F

    Isolated
    Showers

  • Tuesday Night

    Tuesday Night: Isolated showers.  Partly cloudy, with a low around 79. East northeast wind 5 to 10 mph increasing to 13 to 18 mph. Winds could gust as high as 23 mph.

    Low: 79 °F

    Isolated
    Showers

  • Wednesday

    Wednesday: Partly sunny, with a high near 85. East northeast wind 7 to 12 mph increasing to 16 to 21 mph in the morning. Winds could gust as high as 28 mph.

    High: 85 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers.  Mostly cloudy, with a low around 79.

    Low: 79 °F

    Chance
    Showers

  • Thursday

    Thursday: A 30 percent chance of showers.  Partly sunny, with a high near 85. Breezy.

    High: 85 °F

    Chance
    Showers and
    Breezy

  • Thursday Night

    Thursday Night: A chance of showers.  Mostly cloudy, with a low around 79. Breezy.

    Low: 79 °F

    Chance
    Showers and
    Breezy

  • Friday

    Friday: A chance of showers.  Partly sunny, with a high near 86. Breezy.

    High: 86 °F

    Chance
    Showers and
    Breezy

Detailed Forecast

M.L.King Day
Isolated showers. Mostly sunny, with a high near 85. East wind around 21 mph, with gusts as high as 26 mph.
Tonight
Isolated showers. Partly cloudy, with a low around 74. East wind 13 to 18 mph decreasing to 6 to 11 mph. Winds could gust as high as 25 mph.
Tuesday
Isolated showers. Mostly sunny, with a high near 85. East northeast wind 6 to 11 mph increasing to 13 to 18 mph in the morning. Winds could gust as high as 24 mph.
Tuesday Night
Isolated showers. Partly cloudy, with a low around 79. East northeast wind 5 to 10 mph increasing to 13 to 18 mph. Winds could gust as high as 23 mph.
Wednesday
Partly sunny, with a high near 85. East northeast wind 7 to 12 mph increasing to 16 to 21 mph in the morning. Winds could gust as high as 28 mph.
Wednesday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 79.
Thursday
A 30 percent chance of showers. Partly sunny, with a high near 85. Breezy.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 79. Breezy.
Friday
A chance of showers. Partly sunny, with a high near 86. Breezy.
Friday Night
A chance of showers. Mostly cloudy, with a low around 79. Breezy.
Saturday
A chance of showers. Partly sunny, with a high near 84.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 79.
Sunday
Partly sunny, with a high near 85.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles S Agat GU
 13.33°N 144.67°E
6:06 am ChST Jan 19, 2026
1pm ChST Jan 19, 2026-6pm ChST Jan 25, 2026
 
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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