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

Heavy Rainfall Threat Continues in the Southwest on Monday; Record Warmth in the Plains and Midwest

Remnant moisture from Tropical Storm Rachel will persist over portions of the Great Basin and Southwest on Monday, bringing a potential heavy to excessive rainfall risk. Well above average and potentially record breaking temperatures will develop across the Plains and Midwest early this week, spreading into the Lower Mississippi Valley and Southeast midweek. Read More >

Current conditions at

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

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

unknown precip

37°F

3°C

Humidity 100%
Wind Speed ENE 16 MPH
Barometer NA
Dewpoint 37°F (3°C)
Visibility NA
Wind Chill28°F (-2°C)
Last update 11 Oct 07:00 PM MDT
Extended Forecast for

Westby MT

  • Tonight

    Tonight: Rain, possibly mixed with snow and sleet before 2am, then rain between 2am and 5am, then rain and snow after 5am. Patchy fog between 9pm and 5am. Low around 30. Northeast wind 15 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. Total nighttime snow and sleet accumulation of less than a half inch possible.

    Low: 30 °F

    Wintry Mix
    and Patchy
    Fog

  • Columbus Day

    Columbus Day: Rain and snow before 2pm, then a chance of rain between 2pm and 5pm. Patchy fog between 10am and 4pm. Patchy freezing fog before 7am. High near 40. North northeast wind 9 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.

    High: 40 °F

    Rain/Snow and
    Patchy
    Freezing Fog

  • Monday Night

    Monday Night: Patchy fog before 7pm. Otherwise, cloudy, with a low around 30. North wind 5 to 7 mph becoming light and variable after midnight.

    Low: 30 °F

    Patchy Fog
    then Cloudy

  • Tuesday

    Tuesday: Cloudy, then gradually becoming mostly sunny, with a high near 48. Light west wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 18 mph.

    High: 48 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 27. West wind 5 to 7 mph.

    Low: 27 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 56. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 56 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 33. South wind 6 to 10 mph, with gusts as high as 18 mph.

    Low: 33 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 54. Windy, with a northwest wind 14 to 19 mph increasing to 27 to 32 mph in the afternoon. Winds could gust as high as 47 mph.

    High: 54 °F

    Mostly Sunny
    and Windy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 28. Blustery, with a north northwest wind 19 to 24 mph decreasing to 8 to 13 mph after midnight. Winds could gust as high as 36 mph.

    Low: 28 °F

    Partly Cloudy
    and Blustery
    then Partly
    Cloudy

Detailed Forecast

Tonight
Rain, possibly mixed with snow and sleet before 2am, then rain between 2am and 5am, then rain and snow after 5am. Patchy fog between 9pm and 5am. Low around 30. Northeast wind 15 to 17 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. Total nighttime snow and sleet accumulation of less than a half inch possible.
Columbus Day
Rain and snow before 2pm, then a chance of rain between 2pm and 5pm. Patchy fog between 10am and 4pm. Patchy freezing fog before 7am. High near 40. North northeast wind 9 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. New snow accumulation of less than a half inch possible.
Monday Night
Patchy fog before 7pm. Otherwise, cloudy, with a low around 30. North wind 5 to 7 mph becoming light and variable after midnight.
Tuesday
Cloudy, then gradually becoming mostly sunny, with a high near 48. Light west wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 18 mph.
Tuesday Night
Mostly clear, with a low around 27. West wind 5 to 7 mph.
Wednesday
Sunny, with a high near 56. Calm wind becoming south 5 to 7 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 33. South wind 6 to 10 mph, with gusts as high as 18 mph.
Thursday
Mostly sunny, with a high near 54. Windy, with a northwest wind 14 to 19 mph increasing to 27 to 32 mph in the afternoon. Winds could gust as high as 47 mph.
Thursday Night
Partly cloudy, with a low around 28. Blustery, with a north northwest wind 19 to 24 mph decreasing to 8 to 13 mph after midnight. Winds could gust as high as 36 mph.
Friday
Sunny, with a high near 54. Northwest wind 7 to 15 mph becoming south in the afternoon. Winds could gust as high as 24 mph.
Friday Night
Mostly clear, with a low around 32. South wind 11 to 15 mph, with gusts as high as 23 mph.
Saturday
Sunny, with a high near 65.
Saturday Night
Partly cloudy, with a low around 40.
Sunday
Mostly sunny, with a high near 63.
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ABOUT THIS FORECAST

 
Point Forecast:
Westby MT
 48.87°N 104.05°W (Elev. 1991 ft)
Last Update:
3:51 pm MDT Oct 11, 2026
Forecast Valid:
7pm MDT Oct 11, 2026-6pm MDT Oct 18, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation