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

Early Heat Wave in the West; Fire Concerns in the Plains

An anomalously early heat wave will continue to intensify and expand across the West and Southwest as the week progresses. Numerous daily and potentially monthly record highs are expected to be broken. Elevated to critical fire weather conditions are expected today across the High Plains and southern Plains. Lake effect snow downwind of the Great Lakes will taper off today. Read More >

Current conditions at

Helena Regional Airport (KHLN)

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

Overcast

51°F

11°C

Humidity 40%
Wind Speed SSE 3 MPH
Barometer 29.94 in (1013.89 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 17 Mar 08:53 AM MDT
Extended Forecast for

Helena MT

  • Today

    Today: Partly sunny, with a high near 55. West wind 11 to 16 mph, with gusts as high as 37 mph.

    High: 55 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 44. West southwest wind 9 to 13 mph becoming south after midnight. Winds could gust as high as 26 mph.

    Low: 44 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 62. Breezy, with a south wind 14 to 23 mph becoming west in the afternoon. Winds could gust as high as 44 mph.

    High: 62 °F

    Partly Sunny
    then Mostly
    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 45. Southwest wind 10 to 14 mph, with gusts as high as 31 mph.

    Low: 45 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 66. South southwest wind 10 to 20 mph, with gusts as high as 39 mph.

    High: 66 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 48. Southwest wind 10 to 15 mph, with gusts as high as 38 mph.

    Low: 48 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 70. South southwest wind 10 to 20 mph, with gusts as high as 37 mph.

    High: 70 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 46. West southwest wind 15 to 20 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 36 mph.

    Low: 46 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of rain. Partly sunny, with a high near 60.

    High: 60 °F

    Chance Rain

Detailed Forecast

Today
Partly sunny, with a high near 55. West wind 11 to 16 mph, with gusts as high as 37 mph.
Tonight
Mostly cloudy, with a low around 44. West southwest wind 9 to 13 mph becoming south after midnight. Winds could gust as high as 26 mph.
Wednesday
Partly sunny, with a high near 62. Breezy, with a south wind 14 to 23 mph becoming west in the afternoon. Winds could gust as high as 44 mph.
Wednesday Night
Partly cloudy, with a low around 45. Southwest wind 10 to 14 mph, with gusts as high as 31 mph.
Thursday
Mostly sunny, with a high near 66. South southwest wind 10 to 20 mph, with gusts as high as 39 mph.
Thursday Night
Partly cloudy, with a low around 48. Southwest wind 10 to 15 mph, with gusts as high as 38 mph.
Friday
Mostly sunny, with a high near 70. South southwest wind 10 to 20 mph, with gusts as high as 37 mph.
Friday Night
Partly cloudy, with a low around 46. West southwest wind 15 to 20 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 36 mph.
Saturday
A chance of rain. Partly sunny, with a high near 60.
Saturday Night
Partly cloudy, with a low around 33.
Sunday
Mostly sunny, with a high near 52.
Sunday Night
Mostly cloudy, with a low around 33.
Monday
Partly sunny, with a high near 55.
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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:
4:49 am MDT Mar 17, 2026
Forecast Valid:
9am MDT Mar 17, 2026-6pm MDT Mar 23, 2026
 
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