Thunderstorms and Heavy Rain in the Mid-South; Heat Continues in the Southeast and Southwest

Severe thunderstorms and heavy rain are expected across portions of the mid-Mississippi Valley into the Ohio Valley and portions of Arizona. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that, when combined with oppressive dew points, little-to-no relief from the scorching daytime highs will be available. Read More >

Current conditions at

Helena Regional Airport (KHLN)

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

Clear

81°F

27°C

Humidity 24%
Wind Speed N 4 MPH
Barometer 30.02 in (1016.59 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 18 Aug 07:05 PM MDT
Extended Forecast for

Helena MTSimilar City Names

  • Tonight

    Tonight: A 20 percent chance of showers before 8pm.  Patchy smoke after 5am. Partly cloudy, with a low around 57. West southwest wind 5 to 8 mph.

    Low: 57 °F

    Slight Chance
    Showers then
    Patchy Smoke

  • Wednesday

    Wednesday: Patchy smoke before 7am. Sunny, with a high near 86. Light southwest wind becoming west 5 to 9 mph in the afternoon. Winds could gust as high as 21 mph.

    High: 86 °F

    Patchy Smoke
    then Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 57. West northwest wind 5 to 7 mph becoming light and variable. Winds could gust as high as 20 mph.

    Low: 57 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 91. Calm wind becoming northwest 5 to 7 mph in the afternoon.

    High: 91 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 60. North northwest wind 5 to 7 mph becoming calm  after midnight.

    Low: 60 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 89. Calm wind becoming east northeast around 5 mph in the afternoon.

    High: 89 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A 20 percent chance of showers.  Mostly cloudy, with a low around 62. West wind around 6 mph becoming calm  after midnight.

    Low: 62 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: A chance of showers and thunderstorms after noon.  Partly sunny, with a high near 87. Calm wind becoming southwest 5 to 8 mph in the afternoon.

    High: 87 °F

    Partly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before midnight.  Partly cloudy, with a low around 59.

    Low: 59 °F

    Chance
    Showers then
    Partly Cloudy

Detailed Forecast

Tonight
A 20 percent chance of showers before 8pm. Patchy smoke after 5am. Partly cloudy, with a low around 57. West southwest wind 5 to 8 mph.
Wednesday
Patchy smoke before 7am. Sunny, with a high near 86. Light southwest wind becoming west 5 to 9 mph in the afternoon. Winds could gust as high as 21 mph.
Wednesday Night
Mostly clear, with a low around 57. West northwest wind 5 to 7 mph becoming light and variable. Winds could gust as high as 20 mph.
Thursday
Sunny, with a high near 91. Calm wind becoming northwest 5 to 7 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 60. North northwest wind 5 to 7 mph becoming calm after midnight.
Friday
Mostly sunny, with a high near 89. Calm wind becoming east northeast around 5 mph in the afternoon.
Friday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 62. West wind around 6 mph becoming calm after midnight.
Saturday
A chance of showers and thunderstorms after noon. Partly sunny, with a high near 87. Calm wind becoming southwest 5 to 8 mph in the afternoon.
Saturday Night
A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 59.
Sunday
Sunny, with a high near 82.
Sunday Night
Mostly clear, with a low around 56.
Monday
Sunny, with a high near 84.
Monday Night
Partly cloudy, with a low around 58.
Tuesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 86.
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ABOUT THIS FORECAST

 
Point Forecast:
Helena MTSimilar City Names
 46.58°N 112.04°W (Elev. 4413 ft)
12:31 pm MDT Aug 18, 2026
7pm MDT Aug 18, 2026-6pm MDT Aug 25, 2026
 
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Additional Resources

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