Heat Persists in the South Central U.S. and California; Heavy Rain in the Ohio Valley

Sweltering heat remains across the South-Central Plains and Lower/Middle Mississippi Valley, as well as in the Southwest and California this week with limited nighttime relief. Heavy rainfall will lead to localized areas of flash flooding in parts of the Ohio Valley/Central Appalachians. Dry and breezy conditions will enhance fire weather concerns across the northern Rockies and High Plains. Read More >

Current conditions at

Lewistown Divide MT-200 MP 90.3 (MTLEW)

Lat: 47.07579°NLon: 109.26247°WElev: 4723.0ft.

NA

52°F

11°C

Humidity 49%
Wind Speed NNW 2 MPH
Barometer NA
Dewpoint 33°F (1°C)
Visibility NA
Last update 09 Sep 10:30 PM MDT
Extended Forecast for

3 Miles NW Lewistown MT

  • Tonight

    Tonight: Mostly clear, with a low around 48. South southwest wind 6 to 10 mph, with gusts as high as 20 mph.

    Low: 48 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 83. South southwest wind 10 to 20 mph becoming west northwest in the afternoon. Winds could gust as high as 29 mph.

    High: 83 °F

    Sunny

  • Thursday Night

    Thursday Night: Showers likely, mainly after 5am.  Increasing clouds, with a low around 47. West northwest wind 12 to 17 mph becoming light northwest  after midnight. Winds could gust as high as 26 mph.  Chance of precipitation is 70%.

    Low: 47 °F

    Mostly Cloudy
    then Showers
    Likely

  • Friday

    Friday: Showers before noon, then a chance of showers and thunderstorms between noon and 3pm, then a chance of showers after 3pm.  High near 62. Light and variable wind becoming north northwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.  Chance of precipitation is 80%.

    High: 62 °F

    Showers then
    Chance
    Showers

  • Friday Night

    Friday Night: A 20 percent chance of showers.  Mostly cloudy, with a low around 38. North wind 5 to 9 mph becoming calm  in the evening. Winds could gust as high as 18 mph.

    Low: 38 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: A 20 percent chance of showers before noon.  Mostly cloudy, with a high near 58. Light east wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 22 mph.

    High: 58 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms.  Mostly cloudy, with a low around 37. East wind 17 to 20 mph, with gusts as high as 31 mph.  Chance of precipitation is 50%.

    Low: 37 °F

    Chance
    Showers

  • Sunday

    Sunday: Showers likely, then showers and possibly a thunderstorm after noon.  Mostly cloudy, with a high near 53. Northeast wind 10 to 17 mph, with gusts as high as 30 mph.

    High: 53 °F

    Showers

  • Sunday Night

    Sunday Night: Showers, mainly before midnight.  Mostly cloudy, with a low around 34.

    Low: 34 °F

    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 48. South southwest wind 6 to 10 mph, with gusts as high as 20 mph.
Thursday
Sunny, with a high near 83. South southwest wind 10 to 20 mph becoming west northwest in the afternoon. Winds could gust as high as 29 mph.
Thursday Night
Showers likely, mainly after 5am. Increasing clouds, with a low around 47. West northwest wind 12 to 17 mph becoming light northwest after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 70%.
Friday
Showers before noon, then a chance of showers and thunderstorms between noon and 3pm, then a chance of showers after 3pm. High near 62. Light and variable wind becoming north northwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 80%.
Friday Night
A 20 percent chance of showers. Mostly cloudy, with a low around 38. North wind 5 to 9 mph becoming calm in the evening. Winds could gust as high as 18 mph.
Saturday
A 20 percent chance of showers before noon. Mostly cloudy, with a high near 58. Light east wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 22 mph.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 37. East wind 17 to 20 mph, with gusts as high as 31 mph. Chance of precipitation is 50%.
Sunday
Showers likely, then showers and possibly a thunderstorm after noon. Mostly cloudy, with a high near 53. Northeast wind 10 to 17 mph, with gusts as high as 30 mph.
Sunday Night
Showers, mainly before midnight. Mostly cloudy, with a low around 34.
Monday
A slight chance of showers before noon. Mostly sunny, with a high near 61.
Monday Night
Mostly clear, with a low around 35.
Tuesday
Mostly sunny, with a high near 66.
Tuesday Night
Partly cloudy, with a low around 38.
Wednesday
A slight chance of showers. Partly sunny, with a high near 62.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NW Lewistown MT
 47.11°N 109.46°W (Elev. 3898 ft)
12:31 pm MDT Sep 9, 2026
10pm MDT Sep 9, 2026-6pm MDT Sep 16, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database