Heat the Southwest; Fire Weather in the Central U.S.; Kona Low Impacting Hawaii

A rare March heat wave is ongoing with much above-normal temperatures over the Southwest U.S. through this weekend. Periods of critical fire weather will persist from the central Rockies to the central and southern Plains through the weekend as gusty winds and low relative humidity continue. A Kona low will continue to bring several rounds of moderate to heavy rainfall to Hawaii through Sunday. Read More >

Current conditions at

Helena Regional Airport (KHLN)

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

Clear

41°F

5°C

Humidity 59%
Wind Speed N 0 MPH
Barometer 30.09 in (1018.96 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 21 Mar 10:53 PM MDT
Extended Forecast for

Helena MT

  • Tonight

    Tonight: Mostly clear, with a low around 33. West southwest wind around 6 mph.

    Low: 33 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 54. West wind 6 to 13 mph, with gusts as high as 25 mph.

    High: 54 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 32. West wind 6 to 11 mph becoming light and variable  in the evening. Winds could gust as high as 24 mph.

    Low: 32 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 60. Calm wind becoming west northwest 5 to 7 mph in the afternoon.

    High: 60 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 40. Northwest wind 5 to 8 mph becoming calm  in the evening.

    Low: 40 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of rain after noon.  Mostly cloudy, with a high near 62. Calm wind becoming west southwest 5 to 8 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 62 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Tuesday Night

    Tuesday Night: A 20 percent chance of rain before midnight.  Mostly cloudy, with a low around 44. Southwest wind 8 to 10 mph, with gusts as high as 23 mph.

    Low: 44 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of rain.  Partly sunny, with a high near 58. Breezy, with a west southwest wind 9 to 14 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 40 mph.

    High: 58 °F

    Chance Rain
    and Breezy

  • Wednesday Night

    Wednesday Night: A slight chance of rain before 3am, then a slight chance of snow.  Partly cloudy, with a low around 31.

    Low: 31 °F

    Slight Chance
    Rain then
    Slight Chance
    Rain/Snow

Detailed Forecast

Tonight
Mostly clear, with a low around 33. West southwest wind around 6 mph.
Sunday
Sunny, with a high near 54. West wind 6 to 13 mph, with gusts as high as 25 mph.
Sunday Night
Partly cloudy, with a low around 32. West wind 6 to 11 mph becoming light and variable in the evening. Winds could gust as high as 24 mph.
Monday
Partly sunny, with a high near 60. Calm wind becoming west northwest 5 to 7 mph in the afternoon.
Monday Night
Mostly cloudy, with a low around 40. Northwest wind 5 to 8 mph becoming calm in the evening.
Tuesday
A 20 percent chance of rain after noon. Mostly cloudy, with a high near 62. Calm wind becoming west southwest 5 to 8 mph in the afternoon. Winds could gust as high as 20 mph.
Tuesday Night
A 20 percent chance of rain before midnight. Mostly cloudy, with a low around 44. Southwest wind 8 to 10 mph, with gusts as high as 23 mph.
Wednesday
A chance of rain. Partly sunny, with a high near 58. Breezy, with a west southwest wind 9 to 14 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 40 mph.
Wednesday Night
A slight chance of rain before 3am, then a slight chance of snow. Partly cloudy, with a low around 31.
Thursday
Mostly sunny, with a high near 47.
Thursday Night
Partly cloudy, with a low around 26.
Friday
Mostly sunny, with a high near 54.
Friday Night
Partly cloudy, with a low around 30.
Saturday
Mostly sunny, with a high near 59.
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ABOUT THIS FORECAST

 
Point Forecast:
Helena MT
 46.58°N 112.04°W (Elev. 4413 ft)
9:37 pm MDT Mar 21, 2026
11pm MDT Mar 21, 2026-6pm MDT Mar 28, 2026
 
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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