Dangerous Heat in the Southwest; Severe Thunderstorms from the Central Plains into the Ohio Valley

Dangerous heat will build across the Southwest U.S. through the end of the week with daytime highs of 110-115°F. Isolated to widely scattered severe storms are expected across parts of the central and southern High Plains, Great Lakes into the Ohio Valley, and parts of the Ozarks to Lower Mississippi Valley today. Read More >

Current conditions at

Helmville MT-200 MP 53.3 (MTHLM)

Lat: 46.96826°NLon: 112.97487°WElev: 4199.0ft.

NA

81°F

27°C

Humidity 21%
Wind Speed SE 12 MPH
Barometer NA
Dewpoint 37°F (3°C)
Visibility NA
Heat Index79°F (26°C)
Last update 26 Aug 06:15 PM MDT
Extended Forecast for

Helmville MT

  • Tonight

    Tonight: A 20 percent chance of rain before midnight.  Mostly cloudy, then gradually becoming mostly clear, with a low around 48. Light and variable wind.

    Low: 48 °F

    Slight Chance
    Rain then
    Partly Cloudy

  • Thursday

    Thursday: A chance of rain between noon and 3pm, then a chance of showers and thunderstorms after 3pm.  Partly sunny, with a high near 87. Calm wind becoming southwest 5 to 7 mph in the afternoon. Winds could gust as high as 18 mph.  Chance of precipitation is 30%.

    High: 87 °F

    Mostly Sunny
    then Chance
    Showers

  • Thursday Night

    Thursday Night: Patchy smoke between 11pm and 3am. Partly cloudy, with a low around 44. Light south southeast wind.

    Low: 44 °F

    Patchy Smoke

  • Friday

    Friday: Partly sunny, with a high near 81. Calm wind becoming west around 6 mph in the afternoon.

    High: 81 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 45. West wind 5 to 7 mph becoming calm  in the evening.

    Low: 45 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of rain, then showers and possibly a thunderstorm after noon.  High near 74. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 74 °F

    Chance Rain
    then Showers

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm before midnight, then rain likely after midnight.  Mostly cloudy, with a low around 35. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 35 °F

    Showers
    Likely

  • Sunday

    Sunday: A chance of rain.  Partly sunny, with a high near 66.

    High: 66 °F

    Chance Rain

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 32.

    Low: 32 °F

    Mostly Clear

Detailed Forecast

Tonight
A 20 percent chance of rain before midnight. Mostly cloudy, then gradually becoming mostly clear, with a low around 48. Light and variable wind.
Thursday
A chance of rain between noon and 3pm, then a chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 87. Calm wind becoming southwest 5 to 7 mph in the afternoon. Winds could gust as high as 18 mph. Chance of precipitation is 30%.
Thursday Night
Patchy smoke between 11pm and 3am. Partly cloudy, with a low around 44. Light south southeast wind.
Friday
Partly sunny, with a high near 81. Calm wind becoming west around 6 mph in the afternoon.
Friday Night
Mostly cloudy, with a low around 45. West wind 5 to 7 mph becoming calm in the evening.
Saturday
A chance of rain, then showers and possibly a thunderstorm after noon. High near 74. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers likely and possibly a thunderstorm before midnight, then rain likely after midnight. Mostly cloudy, with a low around 35. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
A chance of rain. Partly sunny, with a high near 66.
Sunday Night
Mostly clear, with a low around 32.
Monday
Sunny, with a high near 76.
Monday Night
Mostly clear, with a low around 38.
Tuesday
A slight chance of rain. Mostly sunny, with a high near 78.
Tuesday Night
Partly cloudy, with a low around 38.
Wednesday
Mostly sunny, with a high near 74.
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ABOUT THIS FORECAST

 
Point Forecast:
Helmville MT
 46.86°N 112.97°W (Elev. 4377 ft)
2:01 pm MDT Aug 26, 2026
6pm MDT Aug 26, 2026-6pm MDT Sep 2, 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