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 (HRWM8)

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

NA

56°F

13°C

Humidity 71%
Wind Speed NE 3 MPH
Barometer NA
Dewpoint 47°F (8°C)
Visibility NA
Last update 19 Aug 12:53 AM MDT
Extended Forecast for

7 Miles SSE Marysville MT

  • Overnight

    Overnight: Patchy smoke between 4am and 5am. Mostly clear, with a low around 56. West wind around 8 mph.

    Low: 56 °F

    Patchy Smoke

  • Wednesday

    Wednesday: Sunny, with a high near 82. West wind 7 to 10 mph, with gusts as high as 20 mph.

    High: 82 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 56. West wind 6 to 10 mph.

    Low: 56 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 87. Southwest wind 3 to 8 mph.

    High: 87 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 60. North northwest wind around 6 mph becoming calm  after midnight.

    Low: 60 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 87. Calm wind becoming east northeast 5 to 8 mph in the afternoon.

    High: 87 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 62. East northeast wind 5 to 8 mph becoming calm  after midnight.

    Low: 62 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of showers, with thunderstorms also possible after noon.  Mostly cloudy, with a high near 82. Calm wind becoming west 5 to 9 mph in the afternoon. Winds could gust as high as 18 mph.

    High: 82 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before midnight.  Partly cloudy, with a low around 58.

    Low: 58 °F

    Chance
    Showers then
    Partly Cloudy

Detailed Forecast

Overnight
Patchy smoke between 4am and 5am. Mostly clear, with a low around 56. West wind around 8 mph.
Wednesday
Sunny, with a high near 82. West wind 7 to 10 mph, with gusts as high as 20 mph.
Wednesday Night
Mostly clear, with a low around 56. West wind 6 to 10 mph.
Thursday
Sunny, with a high near 87. Southwest wind 3 to 8 mph.
Thursday Night
Mostly clear, with a low around 60. North northwest wind around 6 mph becoming calm after midnight.
Friday
Mostly sunny, with a high near 87. Calm wind becoming east northeast 5 to 8 mph in the afternoon.
Friday Night
Mostly cloudy, with a low around 62. East northeast wind 5 to 8 mph becoming calm after midnight.
Saturday
A chance of showers, with thunderstorms also possible after noon. Mostly cloudy, with a high near 82. Calm wind becoming west 5 to 9 mph in the afternoon. Winds could gust as high as 18 mph.
Saturday Night
A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 58.
Sunday
A slight chance of showers and thunderstorms after noon. Mostly sunny, with a high near 78.
Sunday Night
Mostly clear, with a low around 53.
Monday
Sunny, with a high near 80.
Monday Night
Partly cloudy, with a low around 57.
Tuesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 81.
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ABOUT THIS FORECAST

 
Point Forecast:
7 Miles SSE Marysville MT
 46.65°N 112.24°W (Elev. 4816 ft)
12:31 am MDT Aug 19, 2026
1am MDT Aug 19, 2026-6pm MDT Aug 25, 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