Threats For Heavy Rain and Severe Thunderstorms Continue in the Plains; Fire Weather Conditions Worsen in the Southwest

On Monday and Tuesday, the focus for heavy rain and severe thunderstorms will continue in the Plains and central Mississippi River Valley. Meanwhile, hot conditions and Critical Fire Weather looms over the Great Basin and Southwest U.S. through midweek. Read More >

Current conditions at

Lewistown, Lewistown Municipal Airport (KLWT)

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

Clear

54°F

12°C

Humidity 93%
Wind Speed SE 4 MPH
Barometer 30.07 in (1018.29 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 16 Jun 02:20 AM MDT
Extended Forecast for

3 Miles NW Lewistown MT

  • Overnight

    Overnight: Patchy fog.  Otherwise, mostly cloudy, with a low around 49. Calm wind.

    Low: 49 °F

    Patchy Fog

  • Monday

    Monday: A slight chance of showers between 10am and noon, then a chance of showers and thunderstorms after noon.  Partly sunny, with a high near 73. Calm wind becoming south southeast around 5 mph in the afternoon.  Chance of precipitation is 50%.

    High: 73 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 48. Southeast wind around 6 mph becoming calm  in the evening.  Chance of precipitation is 50%.

    Low: 48 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after noon.  Partly sunny, with a high near 73. Calm wind becoming north around 5 mph in the afternoon.  Chance of precipitation is 50%.

    High: 73 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 48. West wind around 6 mph becoming south in the evening.

    Low: 48 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 78. Southwest wind 5 to 7 mph becoming west northwest in the afternoon.

    High: 78 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 50. Northwest wind around 6 mph becoming light and variable  after midnight.

    Low: 50 °F

    Mostly Clear

  • Juneteenth

    Juneteenth: Sunny, with a high near 81. Calm wind becoming northwest around 6 mph in the afternoon.

    High: 81 °F

    Sunny

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 51.

    Low: 51 °F

    Chance
    T-storms then
    Chance
    Showers

Detailed Forecast

Overnight
Patchy fog. Otherwise, mostly cloudy, with a low around 49. Calm wind.
Monday
A slight chance of showers between 10am and noon, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 73. Calm wind becoming south southeast around 5 mph in the afternoon. Chance of precipitation is 50%.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 48. Southeast wind around 6 mph becoming calm in the evening. Chance of precipitation is 50%.
Tuesday
A chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 73. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 50%.
Tuesday Night
Mostly clear, with a low around 48. West wind around 6 mph becoming south in the evening.
Wednesday
Sunny, with a high near 78. Southwest wind 5 to 7 mph becoming west northwest in the afternoon.
Wednesday Night
Mostly clear, with a low around 50. Northwest wind around 6 mph becoming light and variable after midnight.
Juneteenth
Sunny, with a high near 81. Calm wind becoming northwest around 6 mph in the afternoon.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 51.
Friday
A slight chance of showers, then a chance of showers and thunderstorms after noon. Partly sunny, with a high near 76.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 47.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 67.
Saturday Night
Showers likely. Mostly cloudy, with a low around 41.
Sunday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 56.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NW Lewistown MT
 47.11°N 109.46°W (Elev. 3898 ft)
10:14 pm MDT Jun 15, 2025
2am MDT Jun 16, 2025-6pm MDT Jun 22, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database