Heavy Rainfall and Flash Flood Threats From the Lower Mississippi Valley Into Ohio/Tennessee Valleys; Elevated to Critical Fire Concerns Out West

Heavy to excessive rainfall with flash flood concerns will be possible from the Lower Mississippi Valley into parts of the Ohio/Tennessee Valleys. Elevated to Critical Fire weather threats will persist across the Great Basin and central Rockies. Finally, Major to Record river flooding will continue in portions of the Midwest and across parts of North and South Carolina. Read More >

Current conditions at

Lewistown, Lewistown Municipal Airport (KLWT)

Lat: 47.04917°NLon: 109.46639°WElev: 4167ft.

Fair

49°F

9°C

Humidity 93%
Wind Speed ESE 3 MPH
Barometer 29.97 in (1012.7 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 22 Sep 10:54 pm MDT
Extended Forecast for

Lewistown MT

  • Tonight

    Tonight: A 30 percent chance of rain, mainly after 4am.  Mostly cloudy, with a low around 43. Southeast wind 5 to 7 mph.

    Chance Rain

    Low: 43 °F

  • Sunday

    Sunday: Rain before 3pm, then showers likely and possibly a thunderstorm between 3pm and 5pm, then a chance of showers and thunderstorms after 5pm.  High near 60. Light and variable wind becoming west northwest 5 to 9 mph in the afternoon.  Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Showers

    High: 60 °F

  • Sunday
    Night

    Sunday Night: Partly cloudy, with a low around 38. West southwest wind 6 to 8 mph.

    Partly Cloudy

    Low: 38 °F

  • Monday

    Monday: A chance of rain, with thunderstorms also possible after 3pm.  Mostly cloudy, with a high near 53. West northwest wind 6 to 14 mph, with gusts as high as 22 mph.  Chance of precipitation is 40%.

    Chance Rain

    High: 53 °F

  • Monday
    Night

    Monday Night: A 20 percent chance of rain.  Mostly cloudy, with a low around 36. West wind 7 to 11 mph.

    Slight Chance
    Rain

    Low: 36 °F

  • Tuesday

    Tuesday: A 20 percent chance of rain before noon.  Mostly sunny, with a high near 56.

    Slight Chance
    Rain then
    Mostly Sunny

    High: 56 °F

  • Tuesday
    Night

    Tuesday Night: Mostly clear, with a low around 37.

    Mostly Clear

    Low: 37 °F

  • Wednesday

    Wednesday: Partly sunny, with a high near 58.

    Partly Sunny

    High: 58 °F

  • Wednesday
    Night

    Wednesday Night: A chance of rain, mainly after midnight.  Mostly cloudy, with a low around 35.

    Chance Rain

    Low: 35 °F

Detailed Forecast

Tonight
A 30 percent chance of rain, mainly after 4am. Mostly cloudy, with a low around 43. Southeast wind 5 to 7 mph.
Sunday
Rain before 3pm, then showers likely and possibly a thunderstorm between 3pm and 5pm, then a chance of showers and thunderstorms after 5pm. High near 60. Light and variable wind becoming west northwest 5 to 9 mph in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Partly cloudy, with a low around 38. West southwest wind 6 to 8 mph.
Monday
A chance of rain, with thunderstorms also possible after 3pm. Mostly cloudy, with a high near 53. West northwest wind 6 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 40%.
Monday Night
A 20 percent chance of rain. Mostly cloudy, with a low around 36. West wind 7 to 11 mph.
Tuesday
A 20 percent chance of rain before noon. Mostly sunny, with a high near 56.
Tuesday Night
Mostly clear, with a low around 37.
Wednesday
Partly sunny, with a high near 58.
Wednesday Night
A chance of rain, mainly after midnight. Mostly cloudy, with a low around 35.
Thursday
Partly sunny, with a high near 54.
Thursday Night
A slight chance of rain. Mostly cloudy, with a low around 37.
Friday
A chance of rain. Partly sunny, with a high near 57.
Friday Night
A chance of rain and snow. Mostly cloudy, with a low around 33.
Saturday
A chance of rain and snow. Mostly cloudy, with a high near 49.
Click Map For Forecast
Point Forecast:
Lewistown MT
 47.07°N 109.43°W (Elev. 3898 ft)
9:16 pm MDT Sep 22, 2018
11pm MDT Sep 22, 2018-6pm MDT Sep 29, 2018
 
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Additional Resources

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