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

Helena Regional Airport (KHLN)

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

Clear

62°F

17°C

Humidity 55%
Wind Speed N 0 MPH
Barometer 30.21 in (1023.03 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 26 Aug 07:53 AM MDT
Extended Forecast for

Montana City MT

  • Today

    Today: A 30 percent chance of showers and thunderstorms after 3pm.  Patchy smoke before 11am. Mostly sunny, with a high near 89. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 89 °F

    Patchy Smoke
    then Chance
    T-storms

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms, mainly before 8pm.  Partly cloudy, with a low around 55. Southeast wind 5 to 7 mph becoming south southwest in the evening.

    Low: 55 °F

    Chance
    T-storms then
    Partly Cloudy

  • Thursday

    Thursday: A chance of showers and thunderstorms, mainly between 2pm and 3pm, then a slight chance of thunderstorms after 3pm.  Partly sunny, with a high near 88. Light and variable wind becoming south southwest 5 to 9 mph in the morning. Winds could gust as high as 18 mph.  Chance of precipitation is 40%.

    High: 88 °F

    Partly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms before midnight.  Mostly cloudy, with a low around 53. South southwest wind 5 to 7 mph.

    Low: 53 °F

    Chance
    T-storms then
    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 83. Calm wind becoming southwest 5 to 9 mph in the afternoon. Winds could gust as high as 20 mph.

    High: 83 °F

    Partly Sunny

  • Friday Night

    Friday Night: A 20 percent chance of showers.  Mostly cloudy, with a low around 53. South wind 3 to 7 mph.

    Low: 53 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: A slight chance of showers, then showers likely and possibly a thunderstorm after noon.  Partly sunny, with a high near 76. Light and variable wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 21 mph.  Chance of precipitation is 60%.

    High: 76 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers likely, mainly before midnight.  Mostly cloudy, with a low around 46. West southwest wind 6 to 8 mph, with gusts as high as 20 mph.

    Low: 46 °F

    Showers
    Likely

  • Sunday

    Sunday: A chance of showers, mainly before noon.  Mostly sunny, with a high near 72.

    High: 72 °F

    Chance
    Showers

Detailed Forecast

Today
A 30 percent chance of showers and thunderstorms after 3pm. Patchy smoke before 11am. Mostly sunny, with a high near 89. Calm wind becoming south 5 to 7 mph in the afternoon.
Tonight
A 30 percent chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 55. Southeast wind 5 to 7 mph becoming south southwest in the evening.
Thursday
A chance of showers and thunderstorms, mainly between 2pm and 3pm, then a slight chance of thunderstorms after 3pm. Partly sunny, with a high near 88. Light and variable wind becoming south southwest 5 to 9 mph in the morning. Winds could gust as high as 18 mph. Chance of precipitation is 40%.
Thursday Night
A 30 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 53. South southwest wind 5 to 7 mph.
Friday
Partly sunny, with a high near 83. Calm wind becoming southwest 5 to 9 mph in the afternoon. Winds could gust as high as 20 mph.
Friday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 53. South wind 3 to 7 mph.
Saturday
A slight chance of showers, then showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 76. Light and variable wind becoming west 5 to 10 mph in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 60%.
Saturday Night
Showers likely, mainly before midnight. Mostly cloudy, with a low around 46. West southwest wind 6 to 8 mph, with gusts as high as 20 mph.
Sunday
A chance of showers, mainly before noon. Mostly sunny, with a high near 72.
Sunday Night
Mostly clear, with a low around 44.
Monday
Sunny, with a high near 79.
Monday Night
A slight chance of showers. Partly cloudy, with a low around 49.
Tuesday
Mostly sunny, with a high near 79.
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ABOUT THIS FORECAST

 
Point Forecast:
Montana City MT
 46.53°N 111.94°W (Elev. 4199 ft)
4:32 am MDT Aug 26, 2026
8am MDT Aug 26, 2026-6pm MDT Sep 1, 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