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

Atmospheric River Continues Areas of Heavy Rain and Snow for California This Weekend

An atmospheric river will continue to bring gusty winds, moderate to heavy rainfall, and potential flooding to southern California and the southern Great Basin through Sunday. Periods of heavy snow will continue as well above 7,000 feet over the Sierra Nevada mountains associated with this atmospheric river. Read More >

Current conditions at

Helena Regional Airport (KHLN)

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

Partly Cloudy

54°F

12°C

Humidity 54%
Wind Speed WSW 18 MPH
Barometer 29.94 in (1013.89 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 15 Nov 05:35 PM MST
Extended Forecast for

Helena MT

  • Tonight

    Tonight: Partly cloudy, with a low around 37. West southwest wind 5 to 7 mph becoming calm after midnight.

    Low: 37 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 54. Calm wind becoming east around 5 mph.

    High: 54 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: A 20 percent chance of rain. Mostly cloudy, with a low around 41. South southwest wind 3 to 6 mph.

    Low: 41 °F

    Slight Chance
    Rain

  • Monday

    Monday: A 50 percent chance of rain. Mostly cloudy, with a high near 51. West southwest wind 3 to 6 mph.

    High: 51 °F

    Chance Rain

  • Monday Night

    Monday Night: A 50 percent chance of rain. Mostly cloudy, with a low around 37. West southwest wind 3 to 5 mph.

    Low: 37 °F

    Chance Rain

  • Tuesday

    Tuesday: A chance of rain before 8am, then a chance of rain and snow between 8am and 2pm, then a chance of rain after 2pm. Partly sunny, with a high near 48. Light and variable wind. Chance of precipitation is 40%. Little or no snow accumulation expected.

    High: 48 °F

    Chance
    Rain/Snow

  • Tuesday Night

    Tuesday Night: A chance of rain and snow. Mostly cloudy, with a low around 33. Calm wind becoming west around 5 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    Low: 33 °F

    Chance
    Rain/Snow

  • Wednesday

    Wednesday: A chance of rain and snow before 8am, then a chance of snow between 8am and 11am, then a slight chance of rain and snow after 11am. Partly sunny, with a high near 41. North northwest wind 3 to 6 mph.

    High: 41 °F

    Chance
    Rain/Snow

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 28.

    Low: 28 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 37. West southwest wind 5 to 7 mph becoming calm after midnight.
Sunday
Mostly cloudy, with a high near 54. Calm wind becoming east around 5 mph.
Sunday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 41. South southwest wind 3 to 6 mph.
Monday
A 50 percent chance of rain. Mostly cloudy, with a high near 51. West southwest wind 3 to 6 mph.
Monday Night
A 50 percent chance of rain. Mostly cloudy, with a low around 37. West southwest wind 3 to 5 mph.
Tuesday
A chance of rain before 8am, then a chance of rain and snow between 8am and 2pm, then a chance of rain after 2pm. Partly sunny, with a high near 48. Light and variable wind. Chance of precipitation is 40%. Little or no snow accumulation expected.
Tuesday Night
A chance of rain and snow. Mostly cloudy, with a low around 33. Calm wind becoming west around 5 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Wednesday
A chance of rain and snow before 8am, then a chance of snow between 8am and 11am, then a slight chance of rain and snow after 11am. Partly sunny, with a high near 41. North northwest wind 3 to 6 mph.
Wednesday Night
Partly cloudy, with a low around 28.
Thursday
Mostly sunny, with a high near 42.
Thursday Night
Partly cloudy, with a low around 29.
Friday
Mostly sunny, with a high near 45.
Friday Night
Partly cloudy, with a low around 31.
Saturday
A slight chance of rain and snow. Mostly sunny, with a high near 45.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Helena MT
 46.58°N 112.07°W (Elev. 4764 ft)
Last Update:
2:18 pm MST Nov 15, 2025
Forecast Valid:
5pm MST Nov 15, 2025-6pm MST Nov 22, 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