Severe Thunderstorms and Heavy Rain in the Mid-Atlantic; Heat Persists Across the South

Scattered severe thunderstorms and excessive rainfall are possible into the night in the Mid Atlantic, and heavy rain will shift to Virginia and the Carolinas on Friday. Severe thunderstorms are also possible in the Central Plains into the Upper MS Valley and the Deep South tonight. Dangerous heat persists across the Southern Plains and Lower MS Valley and heat will expand into the Southwest. Read More >

Current conditions at

HELENA (HRWM8)

Lat: 46.73167°NLon: 112.01917°WElev: 3800.0ft.

NA

79°F

26°C

Humidity 23%
Wind Speed NNW 3 MPH
Barometer NA
Dewpoint 38°F (3°C)
Visibility NA
Heat Index78°F (26°C)
Last update 20 Aug 08:53 PM MDT
Extended Forecast for

15 Miles NNE East Helena MT

  • Tonight

    Tonight: Partly cloudy, with a low around 56. Light north wind.

    Low: 56 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 89. Light northwest wind.

    High: 89 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 57. Northeast wind 5 to 7 mph becoming light and variable  after midnight.

    Low: 57 °F

    Mostly Cloudy

  • Saturday

    Saturday: A slight chance of rain between noon and 3pm, then a slight chance of showers and thunderstorms after 3pm.  Partly sunny, with a high near 87. Calm wind becoming south southeast 5 to 7 mph in the afternoon.  Chance of precipitation is 20%.

    High: 87 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight.  Mostly cloudy, with a low around 56. South southeast wind around 7 mph.  Chance of precipitation is 40%.

    Low: 56 °F

    Chance
    Showers then
    Partly Cloudy

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms after noon.  Mostly sunny, with a high near 83. South southeast wind 5 to 11 mph becoming west in the afternoon. Winds could gust as high as 26 mph.

    High: 83 °F

    Sunny then
    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 52. West wind 6 to 11 mph becoming light southwest  after midnight. Winds could gust as high as 24 mph.

    Low: 52 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 81. Calm wind becoming west northwest around 6 mph in the afternoon.

    High: 81 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 51.

    Low: 51 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 56. Light north wind.
Friday
Mostly sunny, with a high near 89. Light northwest wind.
Friday Night
Mostly cloudy, with a low around 57. Northeast wind 5 to 7 mph becoming light and variable after midnight.
Saturday
A slight chance of rain between noon and 3pm, then a slight chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 87. Calm wind becoming south southeast 5 to 7 mph in the afternoon. Chance of precipitation is 20%.
Saturday Night
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, with a low around 56. South southeast wind around 7 mph. Chance of precipitation is 40%.
Sunday
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 83. South southeast wind 5 to 11 mph becoming west in the afternoon. Winds could gust as high as 26 mph.
Sunday Night
Mostly clear, with a low around 52. West wind 6 to 11 mph becoming light southwest after midnight. Winds could gust as high as 24 mph.
Monday
Sunny, with a high near 81. Calm wind becoming west northwest around 6 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 51.
Tuesday
Sunny, with a high near 82.
Tuesday Night
Partly cloudy, with a low around 53.
Wednesday
Sunny, with a high near 82.
Wednesday Night
A slight chance of showers. Partly cloudy, with a low around 53.
Thursday
Sunny, with a high near 79.
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ABOUT THIS FORECAST

 
Point Forecast:
15 Miles NNE East Helena MT
 46.79°N 111.83°W (Elev. 4849 ft)
9:01 pm MDT Aug 20, 2026
9pm MDT Aug 20, 2026-6pm MDT Aug 27, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database