Severe Weather and Heavy Rainfall Potential for the Plains; Coastal Low Across the mid-Atlantic

An upper trough and frontal boundary will focus showers and thunderstorms across portions of the Plains through this evening. A few severe thunderstorms along with heavy rainfall are expected. Meanwhile, low pressure off the Southeast Coast will bring inclement weather across the Carolina Shorelines through tonight. This system is forecast to meander off the mid-Atlantic coast early this week. Read More >

Current conditions at

Helena Regional Airport (KHLN)

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

Clear

54°F

12°C

Humidity 71%
Wind Speed N 0 MPH
Barometer 29.92 in (1013.21 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 14 Sep 09:05 AM MDT
Extended Forecast for

Montana City MT

  • Today

    Today: Increasing clouds, with a high near 78. Calm wind becoming east northeast around 6 mph in the afternoon.

    High: 78 °F

    Increasing
    Clouds

  • Tonight

    Tonight: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 47. Light and variable wind becoming west around 6 mph in the evening.  Chance of precipitation is 50%.

    Low: 47 °F

    Chance
    Showers

  • Monday

    Monday: Showers likely.  Mostly cloudy, with a high near 65. West wind 6 to 9 mph, with gusts as high as 18 mph.  Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 65 °F

    Showers
    Likely

  • Monday Night

    Monday Night: A 40 percent chance of showers.  Mostly cloudy, with a low around 47. Northwest wind 5 to 9 mph becoming light west  after midnight.

    Low: 47 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A 20 percent chance of showers.  Partly sunny, with a high near 70. Calm wind becoming north northeast around 6 mph in the afternoon.

    High: 70 °F

    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 45. Northeast wind around 6 mph becoming calm  in the evening.

    Low: 45 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 75. Calm wind becoming east northeast around 6 mph in the afternoon.

    High: 75 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 45. East northeast wind around 6 mph becoming south southwest in the evening.

    Low: 45 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

Detailed Forecast

Today
Increasing clouds, with a high near 78. Calm wind becoming east northeast around 6 mph in the afternoon.
Tonight
A chance of showers and thunderstorms. Mostly cloudy, with a low around 47. Light and variable wind becoming west around 6 mph in the evening. Chance of precipitation is 50%.
Monday
Showers likely. Mostly cloudy, with a high near 65. West wind 6 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday Night
A 40 percent chance of showers. Mostly cloudy, with a low around 47. Northwest wind 5 to 9 mph becoming light west after midnight.
Tuesday
A 20 percent chance of showers. Partly sunny, with a high near 70. Calm wind becoming north northeast around 6 mph in the afternoon.
Tuesday Night
Mostly clear, with a low around 45. Northeast wind around 6 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 75. Calm wind becoming east northeast around 6 mph in the afternoon.
Wednesday Night
Clear, with a low around 45. East northeast wind around 6 mph becoming south southwest in the evening.
Thursday
Sunny, with a high near 77.
Thursday Night
Partly cloudy, with a low around 46.
Friday
A slight chance of showers. Mostly sunny, with a high near 75.
Friday Night
A chance of showers. Mostly cloudy, with a low around 46.
Saturday
A chance of showers. Partly sunny, with a high near 73.
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ABOUT THIS FORECAST

 
Point Forecast:
Montana City MT
 46.53°N 111.94°W (Elev. 4199 ft)
8:28 am MDT Sep 14, 2025
9am MDT Sep 14, 2025-6pm MDT Sep 20, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database