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

Atmospheric River Continues to Impact the Northwest U.S.; Gusty to High Winds in the Northeast U.S.

A strong atmospheric river will continue moderate to heavy rainfall with possible flooding, gusty to high winds, and mountain snows for parts of the Northwest U.S. into Thursday. Additional impacts are likely into Friday with a cold front. A fast-moving storm system will cross the Northeast U.S. Wednesday into Thursday with gusty to high winds and areas of rain and high elevation snow showers. Read More >

Current conditions at

Lewistown, Lewistown Municipal Airport (KLWT)

Lat: 47.04917°NLon: 109.46639°WElev: 4167.0ft.

Clear

28°F

-2°C

Humidity 92%
Wind Speed ESE 6 MPH
Barometer 30.16 in (1021.34 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill21°F (-6°C)
Last update 05 Nov 01:35 AM MST
Extended Forecast for

3 Miles NW Lewistown MT

  • Overnight

    Overnight: Partly cloudy, with a low around 27. Southeast wind around 6 mph.

    Low: 27 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Cloudy through mid morning, then becoming mostly sunny, with a high near 60. Southeast wind 6 to 9 mph.

    High: 60 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Cloudy, then gradually becoming partly cloudy, with a low around 36. West southwest wind 11 to 13 mph, with gusts as high as 23 mph.

    Low: 36 °F

    Decreasing
    Clouds

  • Thursday

    Thursday: Mostly sunny, with a high near 55. Breezy, with a west wind 10 to 15 mph increasing to 21 to 26 mph in the afternoon. Winds could gust as high as 38 mph.

    High: 55 °F

    Mostly Sunny
    and Breezy

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 30. West southwest wind 16 to 21 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 34 mph.

    Low: 30 °F

    Mostly Clear

  • Friday

    Friday: A slight chance of rain and snow before 8am, then a chance of rain. Partly sunny, with a high near 53. Breezy, with a southwest wind 7 to 12 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    High: 53 °F

    Chance
    Rain/Snow
    then Chance
    Rain and
    Breezy

  • Friday Night

    Friday Night: A slight chance of rain before 8pm, then a slight chance of rain and snow between 8pm and 11pm, then a slight chance of snow after 11pm. Mostly cloudy, with a low around 26. Breezy, with a west wind 20 to 22 mph, with gusts as high as 37 mph. Chance of precipitation is 20%.

    Low: 26 °F

    Breezy.
    Slight Chance
    Rain/Snow
    then Slight
    Chance Snow

  • Saturday

    Saturday: Partly sunny, with a high near 42. Northwest wind 13 to 16 mph, with gusts as high as 28 mph.

    High: 42 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 20.

    Low: 20 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 27. Southeast wind around 6 mph.
Wednesday
Cloudy through mid morning, then becoming mostly sunny, with a high near 60. Southeast wind 6 to 9 mph.
Wednesday Night
Cloudy, then gradually becoming partly cloudy, with a low around 36. West southwest wind 11 to 13 mph, with gusts as high as 23 mph.
Thursday
Mostly sunny, with a high near 55. Breezy, with a west wind 10 to 15 mph increasing to 21 to 26 mph in the afternoon. Winds could gust as high as 38 mph.
Thursday Night
Mostly clear, with a low around 30. West southwest wind 16 to 21 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 34 mph.
Friday
A slight chance of rain and snow before 8am, then a chance of rain. Partly sunny, with a high near 53. Breezy, with a southwest wind 7 to 12 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 31 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Friday Night
A slight chance of rain before 8pm, then a slight chance of rain and snow between 8pm and 11pm, then a slight chance of snow after 11pm. Mostly cloudy, with a low around 26. Breezy, with a west wind 20 to 22 mph, with gusts as high as 37 mph. Chance of precipitation is 20%.
Saturday
Partly sunny, with a high near 42. Northwest wind 13 to 16 mph, with gusts as high as 28 mph.
Saturday Night
Mostly cloudy, with a low around 20.
Sunday
Partly sunny, with a high near 49.
Sunday Night
Mostly cloudy, with a low around 30.
Monday
Partly sunny, with a high near 64.
Monday Night
Mostly cloudy, with a low around 37.
Veterans Day
Mostly sunny, with a high near 57.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NW Lewistown MT
 47.11°N 109.46°W (Elev. 3898 ft)
Last Update:
10:58 pm MST Nov 4, 2025
Forecast Valid:
1am MST Nov 5, 2025-6pm MST Nov 11, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation