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

Atmospheric River Bringing Heavy Rain to Southern California and Heavy Snow to the Sierra Nevadas

A strong atmospheric river will continue heavy rain over southern California through Friday. The heaviest rainfall is ongoing today in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall has begun over the Sierra Nevada Mountains and will continue through Friday. Travel will become increasingly difficult over the passes due to snow and strong winds. Read More >

Hazardous Weather Conditions

Current conditions at

Glasgow, Glasgow International Airport (KGGW)

Lat: 48.21389°NLon: 106.62139°WElev: 2293.0ft.

freezing fog

20°F

-7°C

Humidity 96%
Wind Speed N 0 MPH
Barometer 29.69 in (1005.42 mb)
Dewpoint 19°F (-7°C)
Visibility 0.25 mi
Last update 25 Dec 10:53 AM MST
Extended Forecast for

Glasgow MT

Dense Fog Advisory until December 26, 08:00am
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory until December 26, 08:00am

    NOW until 8:00am Fri

    Dense Fog Advisory

  • Christmas Day

    High: 30 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 20. Calm wind becoming east southeast around 6 mph after midnight.

    Low: 20 °F

    Mostly Cloudy

  • Friday

    Friday: A slight chance of freezing rain between 11am and noon, then a chance of rain. Partly sunny, with a high near 35. East southeast wind around 6 mph. Chance of precipitation is 30%.

    High: 35 °F

    Slight Chance
    Freezing Rain
    then Chance
    Rain

  • Friday Night

    Friday Night: A chance of freezing rain before 2am, then a slight chance of snow. Partly cloudy, with a low around 13. East southeast wind 7 to 9 mph becoming west after midnight. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.

    Low: 13 °F

    Chance
    Freezing Rain
    then Slight
    Chance Wintry
    Mix

  • Saturday

    Saturday: A 40 percent chance of snow. Mostly cloudy, with a high near 24. Blustery, with a northwest wind 10 to 15 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 34 mph. New snow accumulation of less than a half inch possible.

    High: 24 °F

    Chance Snow
    and Blustery

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around -9. Blustery, with a west northwest wind 18 to 23 mph, with gusts as high as 33 mph.

    Low: -9 °F

    Mostly Cloudy
    and Blustery
    then Partly
    Cloudy

  • Sunday

    Sunday: Sunny, with a high near 4. Northwest wind 6 to 14 mph, with gusts as high as 20 mph.

    High: 4 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around -5. Light and variable wind.

    Low: -5 °F

    Partly Cloudy

Detailed Forecast

Christmas Day
Partly sunny, with a high near 30. West northwest wind 5 to 8 mph becoming east in the afternoon.
Tonight
Mostly cloudy, with a low around 20. Calm wind becoming east southeast around 6 mph after midnight.
Friday
A slight chance of freezing rain between 11am and noon, then a chance of rain. Partly sunny, with a high near 35. East southeast wind around 6 mph. Chance of precipitation is 30%.
Friday Night
A chance of freezing rain before 2am, then a slight chance of snow. Partly cloudy, with a low around 13. East southeast wind 7 to 9 mph becoming west after midnight. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
Saturday
A 40 percent chance of snow. Mostly cloudy, with a high near 24. Blustery, with a northwest wind 10 to 15 mph increasing to 19 to 24 mph in the afternoon. Winds could gust as high as 34 mph. New snow accumulation of less than a half inch possible.
Saturday Night
Mostly cloudy, with a low around -9. Blustery, with a west northwest wind 18 to 23 mph, with gusts as high as 33 mph.
Sunday
Sunny, with a high near 4. Northwest wind 6 to 14 mph, with gusts as high as 20 mph.
Sunday Night
Partly cloudy, with a low around -5. Light and variable wind.
Monday
Partly sunny, with a high near 23. Light and variable wind becoming west around 6 mph in the afternoon.
Monday Night
Mostly cloudy, with a low around 14. West northwest wind 7 to 9 mph.
Tuesday
A 20 percent chance of snow. Mostly cloudy, with a high near 32. West northwest wind around 9 mph.
Tuesday Night
A slight chance of snow. Mostly cloudy, with a low around 9.
Wednesday
A slight chance of snow. Mostly cloudy, with a high near 23.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Glasgow MT
 48.2°N 106.62°W (Elev. 2198 ft)
Last Update:
10:46 am MST Dec 25, 2025
Forecast Valid:
11am MST Dec 25, 2025-6pm MST Dec 31, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation