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

Widespread Rain from Texas to the Central Appalachians; Heavy to Excessive Rainfall in Southern California and the Southwest

Scattered thunderstorms and widespread showers are expected from the Texas coast to the central Appalachians today. Heavy to excessive rainfall will continue in southern California into the Desert Southwest through Saturday. Heavy rain will pose a risk of flash flooding, especially across burn scar and urbanized regions. Read More >

Current conditions at

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

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

NA

39°F

4°C

Humidity 57%
Wind Speed WNW 11 MPH
Barometer NA
Dewpoint 25°F (-4°C)
Visibility NA
Wind Chill32°F (0°C)
Last update 21 Nov 05:45 PM MST
Extended Forecast for

Westby MT

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 27. West southwest wind around 10 mph, with gusts as high as 18 mph.

    Low: 27 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Mostly sunny, with a high near 47. West northwest wind around 10 mph becoming south southwest in the afternoon. Winds could gust as high as 18 mph.

    High: 47 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 28. South southwest wind 8 to 10 mph.

    Low: 28 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 51. Southwest wind 7 to 10 mph.

    High: 51 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 29. West southwest wind around 8 mph.

    Low: 29 °F

    Mostly Cloudy

  • Monday

    Monday: A slight chance of rain between 11am and 2pm, then a slight chance of snow after 2pm. Mostly cloudy, with a high near 42. West northwest wind 7 to 12 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 20%.

    High: 42 °F

    Slight Chance
    Rain then
    Slight Chance
    Rain/Snow

  • Monday Night

    Monday Night: A 40 percent chance of snow. Mostly cloudy, with a low around 17. West northwest wind 16 to 20 mph, with gusts as high as 29 mph. New snow accumulation of less than a half inch possible.

    Low: 17 °F

    Chance Snow

  • Tuesday

    Tuesday: A 30 percent chance of snow, mainly before 11am. Mostly cloudy, with a high near 27. Blustery, with a northwest wind 21 to 26 mph, with gusts as high as 37 mph.

    High: 27 °F

    Chance Snow
    and Blustery

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 9. Northwest wind 11 to 18 mph, with gusts as high as 28 mph.

    Low: 9 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 27. West southwest wind around 10 mph, with gusts as high as 18 mph.
Saturday
Mostly sunny, with a high near 47. West northwest wind around 10 mph becoming south southwest in the afternoon. Winds could gust as high as 18 mph.
Saturday Night
Mostly cloudy, with a low around 28. South southwest wind 8 to 10 mph.
Sunday
Mostly sunny, with a high near 51. Southwest wind 7 to 10 mph.
Sunday Night
Mostly cloudy, with a low around 29. West southwest wind around 8 mph.
Monday
A slight chance of rain between 11am and 2pm, then a slight chance of snow after 2pm. Mostly cloudy, with a high near 42. West northwest wind 7 to 12 mph increasing to 13 to 18 mph in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 20%.
Monday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 17. West northwest wind 16 to 20 mph, with gusts as high as 29 mph. New snow accumulation of less than a half inch possible.
Tuesday
A 30 percent chance of snow, mainly before 11am. Mostly cloudy, with a high near 27. Blustery, with a northwest wind 21 to 26 mph, with gusts as high as 37 mph.
Tuesday Night
Mostly cloudy, with a low around 9. Northwest wind 11 to 18 mph, with gusts as high as 28 mph.
Wednesday
Partly sunny, with a high near 21. Northwest wind around 11 mph, with gusts as high as 18 mph.
Wednesday Night
Mostly cloudy, with a low around 5. North northwest wind 6 to 9 mph.
Thanksgiving Day
Mostly cloudy, with a high near 19.
Thursday Night
Mostly cloudy, with a low around 5.
Friday
A slight chance of snow. Mostly cloudy, with a high near 20.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Westby MT
 48.89°N 104.06°W (Elev. 1949 ft)
Last Update:
2:38 pm MST Nov 21, 2025
Forecast Valid:
6pm MST Nov 21, 2025-6pm MST Nov 28, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation