Heavy Rain and Flooding Threat in the Ohio Valley

Gulf moisture will combine with a cold front and will bring heavy rain and scattered flash flooding over parts of the Mid-South into the Ohio Valley through the morning and the Ohio Valley and Central Appalachians on Tuesday. Showers and thunderstorms, some severe, are expected over the Southern Rockies/Southern High Plains on Tuesday. Read More >

Current conditions at

Lewistown, Lewistown Municipal Airport (KLWT)

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

Clear

37°F

3°C

Humidity 80%
Wind Speed SE 4 MPH
Barometer 30.17 in (1021.67 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill34°F (1°C)
Last update 07 Oct 08:35 AM MDT
Extended Forecast for

Lewistown MT

  • Today

    Today: Sunny, with a high near 68. South wind 5 to 7 mph.

    High: 68 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 41. Southeast wind 7 to 13 mph, with gusts as high as 21 mph.

    Low: 41 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 73. Southeast wind 6 to 10 mph becoming west southwest in the afternoon.

    High: 73 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Clear, with a low around 38. East southeast wind around 6 mph becoming south after midnight.

    Low: 38 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 68. Calm wind becoming east 5 to 8 mph in the afternoon.

    High: 68 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 39. Southeast wind 7 to 9 mph, with gusts as high as 18 mph.

    Low: 39 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 76. South southeast wind 6 to 9 mph.

    High: 76 °F

    Sunny

  • Friday Night

    Friday Night: A chance of showers after midnight.  Partly cloudy, with a low around 47. South wind 8 to 10 mph.

    Low: 47 °F

    Mostly Clear
    then Chance
    Showers

  • Saturday

    Saturday: Showers likely, mainly after noon.  Partly sunny, with a high near 68.

    High: 68 °F

    Showers
    Likely

Detailed Forecast

Today
Sunny, with a high near 68. South wind 5 to 7 mph.
Tonight
Mostly clear, with a low around 41. Southeast wind 7 to 13 mph, with gusts as high as 21 mph.
Wednesday
Sunny, with a high near 73. Southeast wind 6 to 10 mph becoming west southwest in the afternoon.
Wednesday Night
Clear, with a low around 38. East southeast wind around 6 mph becoming south after midnight.
Thursday
Sunny, with a high near 68. Calm wind becoming east 5 to 8 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 39. Southeast wind 7 to 9 mph, with gusts as high as 18 mph.
Friday
Sunny, with a high near 76. South southeast wind 6 to 9 mph.
Friday Night
A chance of showers after midnight. Partly cloudy, with a low around 47. South wind 8 to 10 mph.
Saturday
Showers likely, mainly after noon. Partly sunny, with a high near 68.
Saturday Night
A chance of rain. Mostly cloudy, with a low around 33.
Sunday
A chance of rain. Partly sunny, with a high near 46.
Sunday Night
A chance of rain and snow. Mostly cloudy, with a low around 25.
Columbus Day
A slight chance of rain and snow. Partly sunny, with a high near 47.
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ABOUT THIS FORECAST

 
Point Forecast:
Lewistown MT
 47.07°N 109.43°W (Elev. 3898 ft)
2:16 am MDT Oct 7, 2025
8am MDT Oct 7, 2025-6pm MDT Oct 13, 2025
 
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Additional Resources

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