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

Heavy Rain and Mountain Snow Lingers in California; Winter Storm Impacting the Great Lakes and Northeast U.S.

An atmospheric river will wind down through today across California with lingering heavy rainfall, heavy mountain snow, and gusty winds. A wintry mix of freezing rain, sleet, and snow will cause hazardous travel conditions for the Great Lakes into the northern Mid-Atlantic and southern New England today through Saturday morning. Areas of tree damage and power outages are possible. Read More >

Current conditions at

Helena Regional Airport (KHLN)

Lat: 46.60445°NLon: 111.9892°WElev: 3874.0ft.

Clear

45°F

7°C

Humidity 30%
Wind Speed W 13 MPH
Barometer 29.52 in (999.66 mb)
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 26 Dec 05:05 PM MST
Extended Forecast for

Helena MT

  • Tonight

    Tonight: Snow likely, mainly between 1am and 3am. Increasing clouds, with a low around 23. South southwest wind 9 to 11 mph, with gusts as high as 26 mph. Chance of precipitation is 70%. Total nighttime snow accumulation of less than a half inch possible.

    Low: 23 °F

    Mostly Clear
    then Snow
    Likely

  • Saturday

    Saturday: Snow likely, mainly between 9am and 11am. Partly sunny, with a temperature falling to around 7 by 5pm. Wind chill values as low as -5. West wind 9 to 13 mph becoming north northwest in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    High: 25 °F⇓

    Snow Likely

  • Saturday Night

    Saturday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 5. Wind chill values as low as -5. North northwest wind around 6 mph becoming calm in the evening.

    Low: 5 °F

    Decreasing
    Clouds

  • Sunday

    Sunday: Sunny, with a high near 22. Wind chill values as low as zero. Southwest wind 3 to 6 mph.

    High: 22 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 17. Southwest wind around 7 mph.

    Low: 17 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 36. Southwest wind 5 to 7 mph.

    High: 36 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 27. Southwest wind around 6 mph.

    Low: 27 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 43. South southwest wind 3 to 5 mph.

    High: 43 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 28.

    Low: 28 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Snow likely, mainly between 1am and 3am. Increasing clouds, with a low around 23. South southwest wind 9 to 11 mph, with gusts as high as 26 mph. Chance of precipitation is 70%. Total nighttime snow accumulation of less than a half inch possible.
Saturday
Snow likely, mainly between 9am and 11am. Partly sunny, with a temperature falling to around 7 by 5pm. Wind chill values as low as -5. West wind 9 to 13 mph becoming north northwest in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Saturday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 5. Wind chill values as low as -5. North northwest wind around 6 mph becoming calm in the evening.
Sunday
Sunny, with a high near 22. Wind chill values as low as zero. Southwest wind 3 to 6 mph.
Sunday Night
Mostly clear, with a low around 17. Southwest wind around 7 mph.
Monday
Mostly sunny, with a high near 36. Southwest wind 5 to 7 mph.
Monday Night
Mostly cloudy, with a low around 27. Southwest wind around 6 mph.
Tuesday
Partly sunny, with a high near 43. South southwest wind 3 to 5 mph.
Tuesday Night
Mostly cloudy, with a low around 28.
Wednesday
Mostly cloudy, with a high near 42.
Wednesday Night
Mostly cloudy, with a low around 27.
New Year's Day
Mostly cloudy, with a high near 41.
Thursday Night
Mostly cloudy, with a low around 27.
Friday
A slight chance of snow. Mostly cloudy, with a high near 40.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Helena MT
 46.58°N 112.04°W (Elev. 4413 ft)
Last Update:
2:32 pm MST Dec 26, 2025
Forecast Valid:
5pm MST Dec 26, 2025-6pm MST Jan 2, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation