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

Heavy Rainfall in Southern California and in the Southern Plains; Heavy Snow in the Sierra Nevada Mountains and Rockies

A Pacific storm will bring coastal/lower elevation heavy to excessive rainfall to southern California and the Southern Rockies today, with localized flash flooding possible, especially near recent burn scars. Heavy snow is forecast over parts of the Sierra Nevada Mountains today and over the Northern Rockies on Wednesday. Several inches of snowfall accumulation is possible. Read More >

Current conditions at

Helena Regional Airport (KHLN)

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

Overcast

30°F

-1°C

Humidity 92%
Wind Speed W 4 MPH
Barometer 30.09 in (1018.96 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill26°F (-3°C)
Last update 14 Oct 07:20 AM MDT
Extended Forecast for

Montana City MT

  • Today

    Today: A slight chance of rain and snow before 3pm, then a slight chance of rain after 4pm. Patchy fog before noon. Otherwise, mostly cloudy, with a high near 41. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 20%.

    High: 41 °F

    Slight Chance
    Rain/Snow and
    Patchy Fog

  • Tonight

    Tonight: A slight chance of rain and snow before 2am, then a chance of rain and snow after 4am. Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 27. Light northwest wind. Chance of precipitation is 40%. Little or no snow accumulation expected.

    Low: 27 °F

    Chance
    Rain/Snow and
    Patchy Fog

  • Wednesday

    Wednesday: A chance of rain and snow before 10am, then a chance of rain. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 45. Light northwest wind. Chance of precipitation is 50%. Little or no snow accumulation expected.

    High: 45 °F

    Chance
    Rain/Snow and
    Patchy Fog
    then Chance
    Rain

  • Wednesday Night

    Wednesday Night: Rain likely, mainly after midnight. Mostly cloudy, with a low around 32. Calm wind. Chance of precipitation is 60%.

    Low: 32 °F

    Rain Likely

  • Thursday

    Thursday: A 50 percent chance of rain, mainly before noon. Partly sunny, with a high near 50. West northwest wind 3 to 6 mph.

    High: 50 °F

    Chance Rain
    then Slight
    Chance Rain

  • Thursday Night

    Thursday Night: A 20 percent chance of rain before midnight. Partly cloudy, with a low around 31. South southwest wind 6 to 9 mph.

    Low: 31 °F

    Slight Chance
    Rain then
    Partly Cloudy

  • Friday

    Friday: A 20 percent chance of rain. Mostly sunny, with a high near 53. Southwest wind 8 to 13 mph, with gusts as high as 23 mph.

    High: 53 °F

    Slight Chance
    Rain

  • Friday Night

    Friday Night: A chance of rain, mainly before midnight. Partly cloudy, with a low around 31. West southwest wind 8 to 10 mph, with gusts as high as 22 mph.

    Low: 31 °F

    Chance Rain

  • Saturday

    Saturday: Mostly sunny, with a high near 58.

    High: 58 °F

    Mostly Sunny

Detailed Forecast

Today
A slight chance of rain and snow before 3pm, then a slight chance of rain after 4pm. Patchy fog before noon. Otherwise, mostly cloudy, with a high near 41. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 20%.
Tonight
A slight chance of rain and snow before 2am, then a chance of rain and snow after 4am. Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 27. Light northwest wind. Chance of precipitation is 40%. Little or no snow accumulation expected.
Wednesday
A chance of rain and snow before 10am, then a chance of rain. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 45. Light northwest wind. Chance of precipitation is 50%. Little or no snow accumulation expected.
Wednesday Night
Rain likely, mainly after midnight. Mostly cloudy, with a low around 32. Calm wind. Chance of precipitation is 60%.
Thursday
A 50 percent chance of rain, mainly before noon. Partly sunny, with a high near 50. West northwest wind 3 to 6 mph.
Thursday Night
A 20 percent chance of rain before midnight. Partly cloudy, with a low around 31. South southwest wind 6 to 9 mph.
Friday
A 20 percent chance of rain. Mostly sunny, with a high near 53. Southwest wind 8 to 13 mph, with gusts as high as 23 mph.
Friday Night
A chance of rain, mainly before midnight. Partly cloudy, with a low around 31. West southwest wind 8 to 10 mph, with gusts as high as 22 mph.
Saturday
Mostly sunny, with a high near 58.
Saturday Night
A slight chance of rain after midnight. Partly cloudy, with a low around 35.
Sunday
A chance of rain. Partly sunny, with a high near 62.
Sunday Night
Rain likely. Mostly cloudy, with a low around 35.
Monday
Rain likely. Mostly cloudy, with a high near 49.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Montana City MT
 46.53°N 111.94°W (Elev. 4199 ft)
Last Update:
2:38 am MDT Oct 14, 2025
Forecast Valid:
7am MDT Oct 14, 2025-6pm MDT Oct 20, 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