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

Flooding Threat Along the Gulf Coast, Southern Rockies and High Plains; Cooler Weather in the Central and Eastern U.S.

Strong thunderstorms may bring excessive rainfall and flooding over parts of the northern Gulf Coast today and over parts of the southern Rockies into the High Plains today through the weekend. A refreshingly cool and dry air mass will continue to produce below average temperatures across the central and eastern U.S. through the weekend. Read More >

Current conditions at

Helena Regional Airport (KHLN)

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

Clear

64°F

18°C

Humidity 45%
Wind Speed ENE 4 MPH
Barometer 30.17 in (1021.67 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Last update 30 Aug 10:30 PM MDT
Extended Forecast for

Helena MT

  • Tonight

    Tonight: Mostly clear, with a low around 53. Southwest wind around 6 mph.

    Low: 53 °F

    Mostly Clear

  • Sunday

    Sunday: Widespread haze after noon. Sunny, with a high near 86. Calm wind becoming east northeast around 6 mph in the afternoon.

    High: 86 °F

    Sunny then
    Haze

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 55. East northeast wind around 6 mph becoming calm in the evening.

    Low: 55 °F

    Mostly Clear

  • Labor Day

    Labor Day: Sunny, with a high near 88. Calm wind becoming east northeast around 6 mph in the afternoon.

    High: 88 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 57. Northeast wind around 6 mph becoming calm after midnight.

    Low: 57 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 87. Light and variable wind becoming north 5 to 8 mph in the afternoon.

    High: 87 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 55. North wind 5 to 9 mph becoming calm after midnight.

    Low: 55 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 83. Calm wind becoming north 5 to 9 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 83 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 55.

    Low: 55 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 53. Southwest wind around 6 mph.
Sunday
Widespread haze after noon. Sunny, with a high near 86. Calm wind becoming east northeast around 6 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 55. East northeast wind around 6 mph becoming calm in the evening.
Labor Day
Sunny, with a high near 88. Calm wind becoming east northeast around 6 mph in the afternoon.
Monday Night
Mostly clear, with a low around 57. Northeast wind around 6 mph becoming calm after midnight.
Tuesday
Sunny, with a high near 87. Light and variable wind becoming north 5 to 8 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 55. North wind 5 to 9 mph becoming calm after midnight.
Wednesday
Sunny, with a high near 83. Calm wind becoming north 5 to 9 mph in the afternoon. Winds could gust as high as 20 mph.
Wednesday Night
Mostly clear, with a low around 55.
Thursday
Mostly sunny, with a high near 84.
Thursday Night
Mostly clear, with a low around 53.
Friday
Sunny, with a high near 86.
Friday Night
Partly cloudy, with a low around 57.
Saturday
A slight chance of showers. Mostly sunny, with a high near 85.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Helena MT
 46.58°N 112.01°W (Elev. 4111 ft)
Last Update:
8:44 pm MDT Aug 30, 2025
Forecast Valid:
10pm MDT Aug 30, 2025-6pm MDT Sep 6, 2025
 
Forecast Discussion
 
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Additional Resources

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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