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Flooding Risks from Tropical Moisture Across the Southeast and Southwest

Tropical moisture from Isaias and Rachel will impact portions of the Southeast and Southwest this weekend. Flash flooding, strong winds and even a threat for severe thunderstorms and tornadoes are possible. Meanwhile, strong winds and dry fuels are raising fire weather concerns across the central Great Basin and western High Plains. Across the northern Rockies, first winter storm of the season. Read More >

Hazardous Weather Conditions

Current conditions at

Helena Regional Airport (KHLN)

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

Mostly Cloudy

52°F

11°C

Humidity 62%
Wind Speed NNW 13 MPH
Barometer 29.69 in (1005.42 mb)
Dewpoint 39°F (4°C)
Visibility 10.00 mi
Last update 10 Oct 10:35 AM MDT
Extended Forecast for

Montana City MT

Winter Storm Warning October 10, 06:00pm until October 12, 06:00am
Click here for hazard details and duration
Winter Storm Warning

  • Today

    Today: Rain likely before 3pm, then rain and snow. Temperature falling to around 33 by 4pm. North northwest wind 9 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. Total daytime snow accumulation of less than a half inch possible.

    High: 48 °F⇓

    Chance Rain
    then
    Rain/Snow

  • Tonight

    Tonight: Snow. Low around 27. North northwest wind 15 to 20 mph, with gusts as high as 32 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

    Low: 27 °F

    Snow

  • Sunday

    Sunday: Snow. High near 33. Northwest wind 11 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

    High: 33 °F

    Snow

  • Sunday Night

    Sunday Night: Snow. Low around 23. Northwest wind 9 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.

    Low: 23 °F

    Snow

  • Columbus Day

    Columbus Day: Snow likely before noon. Mostly cloudy, with a high near 40. Northwest wind 5 to 9 mph becoming light north in the afternoon. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 40 °F

    Snow Likely
    then Mostly
    Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 23. Light and variable wind.

    Low: 23 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 47. Light and variable wind.

    High: 47 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 26. Calm wind becoming south southwest around 5 mph.

    Low: 26 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 52.

    High: 52 °F

    Sunny

Detailed Forecast

Today
Rain likely before 3pm, then rain and snow. Temperature falling to around 33 by 4pm. North northwest wind 9 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. Total daytime snow accumulation of less than a half inch possible.
Tonight
Snow. Low around 27. North northwest wind 15 to 20 mph, with gusts as high as 32 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.
Sunday
Snow. High near 33. Northwest wind 11 to 16 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.
Sunday Night
Snow. Low around 23. Northwest wind 9 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New snow accumulation of 3 to 5 inches possible.
Columbus Day
Snow likely before noon. Mostly cloudy, with a high near 40. Northwest wind 5 to 9 mph becoming light north in the afternoon. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Monday Night
Mostly cloudy, with a low around 23. Light and variable wind.
Tuesday
Mostly sunny, with a high near 47. Light and variable wind.
Tuesday Night
Mostly clear, with a low around 26. Calm wind becoming south southwest around 5 mph.
Wednesday
Sunny, with a high near 52.
Wednesday Night
A slight chance of rain after midnight. Partly cloudy, with a low around 29.
Thursday
A slight chance of rain and snow. Mostly sunny, with a high near 53.
Thursday Night
Partly cloudy, with a low around 28.
Friday
Sunny, with a high near 60.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Montana City MT
 46.55°N 111.94°W (Elev. 4199 ft)
Last Update:
9:41 am MDT Oct 10, 2026
Forecast Valid:
10am MDT Oct 10, 2026-6pm MDT Oct 16, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation