National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Severe Thunderstorm, Flooding, and Winter Weather Threats on Tuesday

Scattered severe thunderstorms are forecast Tuesday from the southern Plains into the southern Great Lakes vicinity. Thunderstorms may also produce heavy to excessive rain that could pose a flooding threat from central Texas into southern Oklahoma and northern Missouri into southern Michigan. A heavy wintry mix is forecast for the Great Lakes into northern Maine. Read More >

Current conditions at

Comertown Turn-Off MT-5 MP 13.4 (MTCOM)

Lat: 48.81°NLon: 104.2529°WElev: 2359.0ft.

NA

22°F

-6°C

Humidity 72%
Wind Speed SSW 4 MPH
Barometer NA
Dewpoint 14°F (-10°C)
Visibility NA
Wind Chill17°F (-8°C)
Last update 09 Mar 09:45 PM MDT
Extended Forecast for

Westby MT

  • Tonight

    Tonight: Partly cloudy, with a low around 20. South southeast wind 10 to 13 mph becoming west after midnight. Winds could gust as high as 20 mph.

    Low: 20 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 36. Northwest wind around 11 mph.

    High: 36 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 18. Northwest wind 7 to 9 mph becoming south southeast after midnight.

    Low: 18 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 42. West southwest wind 8 to 13 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 26 mph.

    High: 42 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 24. Southwest wind 11 to 16 mph, with gusts as high as 23 mph.

    Low: 24 °F

    Partly Cloudy
    then Slight
    Chance Snow

  • Thursday

    Thursday: Snow likely before noon, then a chance of rain and snow between noon and 3pm, then a chance of snow after 3pm. Mostly cloudy, with a high near 39. Breezy, with a south southwest wind 11 to 16 mph becoming north 19 to 24 mph in the afternoon. Winds could gust as high as 33 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    High: 39 °F

    Snow Likely
    then Chance
    Rain/Snow and
    Breezy

  • Thursday Night

    Thursday Night: A 20 percent chance of snow. Mostly cloudy, with a low around 17. North wind 15 to 20 mph decreasing to 8 to 13 mph after midnight.

    Low: 17 °F

    Slight Chance
    Snow

  • Friday

    Friday: A 40 percent chance of snow. Cloudy, with a high near 31. East northeast wind 8 to 15 mph becoming south southeast in the afternoon.

    High: 31 °F

    Chance Snow

  • Friday Night

    Friday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 14. Northeast wind 11 to 13 mph, with gusts as high as 18 mph.

    Low: 14 °F

    Chance Snow

Detailed Forecast

Tonight
Partly cloudy, with a low around 20. South southeast wind 10 to 13 mph becoming west after midnight. Winds could gust as high as 20 mph.
Tuesday
Sunny, with a high near 36. Northwest wind around 11 mph.
Tuesday Night
Partly cloudy, with a low around 18. Northwest wind 7 to 9 mph becoming south southeast after midnight.
Wednesday
Mostly sunny, with a high near 42. West southwest wind 8 to 13 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 26 mph.
Wednesday Night
A 20 percent chance of snow after midnight. Mostly cloudy, with a low around 24. Southwest wind 11 to 16 mph, with gusts as high as 23 mph.
Thursday
Snow likely before noon, then a chance of rain and snow between noon and 3pm, then a chance of snow after 3pm. Mostly cloudy, with a high near 39. Breezy, with a south southwest wind 11 to 16 mph becoming north 19 to 24 mph in the afternoon. Winds could gust as high as 33 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Thursday Night
A 20 percent chance of snow. Mostly cloudy, with a low around 17. North wind 15 to 20 mph decreasing to 8 to 13 mph after midnight.
Friday
A 40 percent chance of snow. Cloudy, with a high near 31. East northeast wind 8 to 15 mph becoming south southeast in the afternoon.
Friday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 14. Northeast wind 11 to 13 mph, with gusts as high as 18 mph.
Saturday
A 50 percent chance of snow. Mostly cloudy, with a high near 23. Northeast wind 13 to 20 mph, with gusts as high as 26 mph.
Saturday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 5. North northeast wind 11 to 20 mph, with gusts as high as 25 mph.
Sunday
Mostly cloudy, with a high near 22.
Sunday Night
Mostly cloudy, with a low around 8.
Monday
A slight chance of snow. Mostly cloudy, with a high near 26.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Westby MT
 48.87°N 104.05°W (Elev. 1991 ft)
Last Update:
7:20 pm MDT Mar 9, 2026
Forecast Valid:
10pm MDT Mar 9, 2026-6pm MDT Mar 16, 2026
 
Forecast Discussion
 
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Additional Resources

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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