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

Loma US-87 MP 53.1 (MTLOM)

Lat: 47.95103°NLon: 110.50477°WElev: 2700.0ft.

NA

25°F

-4°C

Humidity NA
Wind Speed NW 8 MPH
Barometer NA
Dewpoint N/A
Visibility NA
Wind Chill16°F (-9°C)
Last update NA
Extended Forecast for

Fort Benton MT

Winter Storm Watch December 24, 06:00pm until December 25, 11:00am
Click here for hazard details and duration
Winter Storm Watch

  • Today

    Today: Partly sunny, with a high near 31. Northeast wind 3 to 6 mph.

    High: 31 °F

    Partly Sunny

  • Tonight

    Tonight: Snow, freezing rain, and sleet before 4am, then snow likely between 4am and 5am, then snow and freezing rain likely after 5am. Patchy fog after 8pm. Low around 21. North wind around 5 mph becoming calm in the evening. Chance of precipitation is 90%. New ice accumulation of less than a 0.1 of an inch possible. Little or no snow and sleet accumulation expected.

    Low: 21 °F

    Wintry Mix
    and Patchy
    Fog

  • Christmas Day

    Christmas Day: Freezing rain likely, mainly before 7am. Patchy fog before 11am. Otherwise, partly sunny, with a high near 37. Calm wind becoming south southwest around 5 mph in the afternoon. Chance of precipitation is 60%. Little or no ice accumulation expected.

    High: 37 °F

    Freezing Rain
    Likely and
    Patchy Fog
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 29. South southwest wind around 7 mph.

    Low: 29 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 49. Southwest wind 8 to 14 mph, with gusts as high as 22 mph.

    High: 49 °F

    Partly Sunny

  • Friday Night

    Friday Night: A 20 percent chance of snow after 11pm. Mostly cloudy, with a low around 6. Southwest wind 14 to 17 mph, with gusts as high as 25 mph.

    Low: 6 °F

    Slight Chance
    Snow

  • Saturday

    Saturday: A 30 percent chance of snow before 11am. Partly sunny, with a high near 18. West northwest wind 13 to 15 mph, with gusts as high as 22 mph. New snow accumulation of less than a half inch possible.

    High: 18 °F

    Chance Snow
    then Mostly
    Cloudy

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 0. West northwest wind 5 to 9 mph becoming light and variable after midnight.

    Low: 0 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 31.

    High: 31 °F

    Partly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 31. Northeast wind 3 to 6 mph.
Tonight
Snow, freezing rain, and sleet before 4am, then snow likely between 4am and 5am, then snow and freezing rain likely after 5am. Patchy fog after 8pm. Low around 21. North wind around 5 mph becoming calm in the evening. Chance of precipitation is 90%. New ice accumulation of less than a 0.1 of an inch possible. Little or no snow and sleet accumulation expected.
Christmas Day
Freezing rain likely, mainly before 7am. Patchy fog before 11am. Otherwise, partly sunny, with a high near 37. Calm wind becoming south southwest around 5 mph in the afternoon. Chance of precipitation is 60%. Little or no ice accumulation expected.
Thursday Night
Mostly cloudy, with a low around 29. South southwest wind around 7 mph.
Friday
Partly sunny, with a high near 49. Southwest wind 8 to 14 mph, with gusts as high as 22 mph.
Friday Night
A 20 percent chance of snow after 11pm. Mostly cloudy, with a low around 6. Southwest wind 14 to 17 mph, with gusts as high as 25 mph.
Saturday
A 30 percent chance of snow before 11am. Partly sunny, with a high near 18. West northwest wind 13 to 15 mph, with gusts as high as 22 mph. New snow accumulation of less than a half inch possible.
Saturday Night
Partly cloudy, with a low around 0. West northwest wind 5 to 9 mph becoming light and variable after midnight.
Sunday
Partly sunny, with a high near 31.
Sunday Night
Partly cloudy, with a low around 18.
Monday
Partly sunny, with a high near 47.
Monday Night
Mostly cloudy, with a low around 27.
Tuesday
Mostly cloudy, with a high near 48.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Fort Benton MT
 47.82°N 110.64°W (Elev. 2638 ft)
Last Update:
9:22 am MST Dec 24, 2025
Forecast Valid:
9am MST Dec 24, 2025-6pm MST Dec 30, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation