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

77°F

25°C

Humidity 16%
Wind Speed WSW 13 MPH
Barometer 29.95 in (1014.22 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Heat Index77°F (25°C)
Last update 20 Mar 04:53 PM MDT
Extended Forecast for

Helena MT

  • Tonight

    Tonight: Partly cloudy, with a low around 45. Southwest wind 13 to 18 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 40 mph.

    Low: 45 °F

    Partly Cloudy

  • Saturday

    Saturday: A slight chance of rain before 2pm, then a chance of rain after 3pm.  Mostly sunny, with a high near 59. Breezy, with a light southwest wind becoming west 17 to 22 mph in the morning. Winds could gust as high as 41 mph.  Chance of precipitation is 30%.

    High: 59 °F

    Mostly Sunny
    then Chance
    Rain and
    Breezy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 33. West northwest wind 5 to 15 mph, with gusts as high as 31 mph.

    Low: 33 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 54. West southwest wind 5 to 11 mph, with gusts as high as 23 mph.

    High: 54 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 33. West wind 8 to 13 mph becoming light southwest  after midnight. Winds could gust as high as 25 mph.

    Low: 33 °F

    Partly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 57. Calm wind becoming west northwest 5 to 7 mph in the afternoon.

    High: 57 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 37. West northwest wind 5 to 8 mph becoming calm  in the evening.

    Low: 37 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 64. Light southwest wind increasing to 5 to 10 mph in the afternoon. Winds could gust as high as 23 mph.

    High: 64 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 45.

    Low: 45 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 45. Southwest wind 13 to 18 mph decreasing to 5 to 10 mph after midnight. Winds could gust as high as 40 mph.
Saturday
A slight chance of rain before 2pm, then a chance of rain after 3pm. Mostly sunny, with a high near 59. Breezy, with a light southwest wind becoming west 17 to 22 mph in the morning. Winds could gust as high as 41 mph. Chance of precipitation is 30%.
Saturday Night
Mostly clear, with a low around 33. West northwest wind 5 to 15 mph, with gusts as high as 31 mph.
Sunday
Sunny, with a high near 54. West southwest wind 5 to 11 mph, with gusts as high as 23 mph.
Sunday Night
Partly cloudy, with a low around 33. West wind 8 to 13 mph becoming light southwest after midnight. Winds could gust as high as 25 mph.
Monday
Mostly cloudy, with a high near 57. Calm wind becoming west northwest 5 to 7 mph in the afternoon.
Monday Night
Mostly cloudy, with a low around 37. West northwest wind 5 to 8 mph becoming calm in the evening.
Tuesday
Mostly cloudy, with a high near 64. Light southwest wind increasing to 5 to 10 mph in the afternoon. Winds could gust as high as 23 mph.
Tuesday Night
Mostly cloudy, with a low around 45.
Wednesday
Partly sunny, with a high near 65.
Wednesday Night
Partly cloudy, with a low around 30.
Thursday
Mostly sunny, with a high near 46.
Thursday Night
Mostly clear, with a low around 26.
Friday
Sunny, with a high near 55.
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ABOUT THIS FORECAST

 
Point Forecast:
Helena MT
 46.58°N 112.04°W (Elev. 4413 ft)
12:56 pm MDT Mar 20, 2026
5pm MDT Mar 20, 2026-6pm MDT Mar 27, 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