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

Showers and Thunderstorms in the Southwest and Ohio Valley; Mountain Snow in the Northeast

Showers and thunderstorms, along with high-elevation snow, will begin to develop over parts of the Southwest late tonight and is expected to continue through Wednesday morning. Mountain snow over parts the Northeast will continue through Tuesday. A few strong to severe storms and heavy rainfall are possible across portions of the Lower Ohio Valley Tuesday. Read More >

Current conditions at

Helena Regional Airport (KHLN)

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

Mostly Cloudy

39°F

4°C

Humidity 86%
Wind Speed N 0 MPH
Barometer 29.91 in (1012.87 mb)
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 18 Nov 12:20 AM MST
Extended Forecast for

Helena MT

  • Overnight

    Overnight: Mostly cloudy, with a low around 37. South southwest wind around 5 mph becoming calm.

    Low: 37 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Patchy fog before 11am. Otherwise, partly sunny, with a high near 53. Light and variable wind.

    High: 53 °F

    Patchy Fog
    then Partly
    Sunny

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain after 11pm. Mostly cloudy, with a low around 33. West southwest wind 3 to 5 mph.

    Low: 33 °F

    Slight Chance
    Rain

  • Wednesday

    Wednesday: A chance of rain before 8am, then a chance of rain and snow between 8am and 2pm, then a slight chance of rain after 2pm. Mostly cloudy, then gradually becoming sunny, with a high near 45. Light and variable wind. Chance of precipitation is 30%. Little or no snow accumulation expected.

    High: 45 °F

    Chance
    Rain/Snow

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 28. Light and variable wind.

    Low: 28 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 50. Light south wind.

    High: 50 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 29. Southwest wind 3 to 6 mph.

    Low: 29 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 51. West southwest wind around 7 mph.

    High: 51 °F

    Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 32.

    Low: 32 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 37. South southwest wind around 5 mph becoming calm.
Tuesday
Patchy fog before 11am. Otherwise, partly sunny, with a high near 53. Light and variable wind.
Tuesday Night
A 20 percent chance of rain after 11pm. Mostly cloudy, with a low around 33. West southwest wind 3 to 5 mph.
Wednesday
A chance of rain before 8am, then a chance of rain and snow between 8am and 2pm, then a slight chance of rain after 2pm. Mostly cloudy, then gradually becoming sunny, with a high near 45. Light and variable wind. Chance of precipitation is 30%. Little or no snow accumulation expected.
Wednesday Night
Mostly clear, with a low around 28. Light and variable wind.
Thursday
Sunny, with a high near 50. Light south wind.
Thursday Night
Mostly clear, with a low around 29. Southwest wind 3 to 6 mph.
Friday
Sunny, with a high near 51. West southwest wind around 7 mph.
Friday Night
Mostly cloudy, with a low around 32.
Saturday
Mostly sunny, with a high near 49.
Saturday Night
A slight chance of rain and snow. Mostly cloudy, with a low around 34.
Sunday
A slight chance of rain and snow. Partly sunny, with a high near 50.
Sunday Night
A chance of rain and snow. Mostly cloudy, with a low around 33.
Monday
A chance of rain and snow. Partly sunny, with a high near 48.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Helena MT
 46.58°N 112.01°W (Elev. 4111 ft)
Last Update:
9:34 pm MST Nov 17, 2025
Forecast Valid:
12am MST Nov 18, 2025-6pm MST Nov 24, 2025
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation