Severe Weather and Heavy Rain from the Ohio Valley to the Mid-Atlantic; Heat Persists in the South-Central U.S.

Widespread strong thunderstorms with damaging winds and locally heavy rain are expected across portions of the Ohio Valley into southern Mid-Atlantic and Carolinas. Rounds of strong thunderstorms are expected to develop across the northern and central Plains. Sweltering heat remains most persistent across the South-Central Plains and Lower/Middle Mississippi Valley through next week. Read More >

Current conditions at

Helena Regional Airport (KHLN)

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

Partly Cloudy

64°F

18°C

Humidity 52%
Wind Speed NW 3 MPH
Barometer 30.11 in (1019.64 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 05 Sep 11:20 AM MDT
Extended Forecast for

Montana City MT

  • Today

    Today: Sunny, with a high near 75. North northeast wind 5 to 7 mph.

    High: 75 °F

    Sunny

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 9pm.  Patchy fog after 5am.  Otherwise, partly cloudy, with a low around 46. North wind 5 to 7 mph becoming light and variable  after midnight.

    Low: 46 °F

    Slight Chance
    T-storms then
    Patchy Fog

  • Sunday

    Sunday: Patchy fog before 9am.  Otherwise, mostly sunny, with a high near 76. Calm wind becoming north 5 to 7 mph in the afternoon.

    High: 76 °F

    Patchy Fog
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight, then rain likely after midnight.  Mostly cloudy, with a low around 48. Northwest wind 5 to 9 mph becoming calm  after midnight. Winds could gust as high as 18 mph.  Chance of precipitation is 70%.

    Low: 48 °F

    Showers
    Likely

  • Labor Day

    Labor Day: Rain before 9am, then showers and possibly a thunderstorm after 9am.  High near 66. Light northwest wind becoming west 8 to 13 mph in the afternoon. Winds could gust as high as 23 mph.  Chance of precipitation is 100%.

    High: 66 °F

    Showers

  • Monday Night

    Monday Night: Rain likely, mainly before midnight.  Mostly cloudy, with a low around 43. West southwest wind 11 to 16 mph, with gusts as high as 31 mph.  Chance of precipitation is 60%.

    Low: 43 °F

    Rain Likely

  • Tuesday

    Tuesday: A 20 percent chance of rain before noon.  Mostly sunny, with a high near 70. West southwest wind 7 to 10 mph, with gusts as high as 20 mph.

    High: 70 °F

    Slight Chance
    Rain then
    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 42. Northwest wind 5 to 8 mph becoming calm  in the evening.

    Low: 42 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

Detailed Forecast

Today
Sunny, with a high near 75. North northeast wind 5 to 7 mph.
Tonight
A 20 percent chance of showers and thunderstorms before 9pm. Patchy fog after 5am. Otherwise, partly cloudy, with a low around 46. North wind 5 to 7 mph becoming light and variable after midnight.
Sunday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 76. Calm wind becoming north 5 to 7 mph in the afternoon.
Sunday Night
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight, then rain likely after midnight. Mostly cloudy, with a low around 48. Northwest wind 5 to 9 mph becoming calm after midnight. Winds could gust as high as 18 mph. Chance of precipitation is 70%.
Labor Day
Rain before 9am, then showers and possibly a thunderstorm after 9am. High near 66. Light northwest wind becoming west 8 to 13 mph in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 100%.
Monday Night
Rain likely, mainly before midnight. Mostly cloudy, with a low around 43. West southwest wind 11 to 16 mph, with gusts as high as 31 mph. Chance of precipitation is 60%.
Tuesday
A 20 percent chance of rain before noon. Mostly sunny, with a high near 70. West southwest wind 7 to 10 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 42. Northwest wind 5 to 8 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 77.
Wednesday Night
Partly cloudy, with a low around 46.
Thursday
Mostly sunny, with a high near 79.
Thursday Night
Partly cloudy, with a low around 48.
Friday
A slight chance of showers. Mostly sunny, with a high near 75.
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ABOUT THIS FORECAST

 
Point Forecast:
Montana City MT
 46.53°N 111.94°W (Elev. 4199 ft)
11:01 am MDT Sep 5, 2026
11am MDT Sep 5, 2026-6pm MDT Sep 11, 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