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

Helena Regional Airport (KHLN)

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

Clear

39°F

4°C

Humidity 80%
Wind Speed SSE 3 MPH
Barometer 30.06 in (1017.95 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Last update 19 Oct 01:35 AM MDT
Extended Forecast for

Montana City MT

  • Overnight

    Overnight: Mostly clear, with a low around 36. South wind 3 to 5 mph.

    Low: 36 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 68. South southeast wind 3 to 8 mph.

    High: 68 °F

    Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 37. South southwest wind 5 to 7 mph becoming calm after midnight.

    Low: 37 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Mostly cloudy, then gradually becoming sunny, with a high near 60. Calm wind becoming north northwest around 5 mph in the afternoon.

    High: 60 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 36. Light and variable wind.

    Low: 36 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 66. Calm wind becoming south southeast 5 to 8 mph in the afternoon.

    High: 66 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 41. South wind 3 to 6 mph.

    Low: 41 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 67. Southeast wind 3 to 8 mph.

    High: 67 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Rain, mainly after midnight. Mostly cloudy, with a low around 41.

    Low: 41 °F

    Rain

Detailed Forecast

Overnight
Mostly clear, with a low around 36. South wind 3 to 5 mph.
Monday
Sunny, with a high near 68. South southeast wind 3 to 8 mph.
Monday Night
Increasing clouds, with a low around 37. South southwest wind 5 to 7 mph becoming calm after midnight.
Tuesday
Mostly cloudy, then gradually becoming sunny, with a high near 60. Calm wind becoming north northwest around 5 mph in the afternoon.
Tuesday Night
Partly cloudy, with a low around 36. Light and variable wind.
Wednesday
Sunny, with a high near 66. Calm wind becoming south southeast 5 to 8 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 41. South wind 3 to 6 mph.
Thursday
Mostly sunny, with a high near 67. Southeast wind 3 to 8 mph.
Thursday Night
Rain, mainly after midnight. Mostly cloudy, with a low around 41.
Friday
Rain likely. Mostly cloudy, with a high near 47.
Friday Night
A chance of rain and snow. Mostly cloudy, with a low around 28.
Saturday
Mostly sunny, with a high near 45.
Saturday Night
A slight chance of snow. Partly cloudy, with a low around 28.
Sunday
A slight chance of rain and snow. Partly sunny, with a high near 47.
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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:
12:31 am MDT Oct 19, 2026
Forecast Valid:
2am MDT Oct 19, 2026-6pm MDT Oct 25, 2026
 
Forecast Discussion
 
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Additional Resources

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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