Locally Heavy Rainfall Possible Over the Four Corners; Critical Fire Weather Conditions in the Great Basin

Monsoon moisture will result in locally heavy showers and thunderstorms over the Four Corners region, which could lead to flash flooding. While, critical fire weather threats are expected for much of the Great Basin, from dry and windy conditions. Finally, Tropical Cyclone Humberto remains well offshore of the Southeast, but rip currents and heavy surf are expected from Florida to the Carolinas. Read More >

Current conditions at

Lewistown, Lewistown Municipal Airport (KLWT)

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

Fair

57°F

14°C

Humidity 47%
Wind Speed ESE 10 MPH
Barometer 29.76 in
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 16 Sep 2:05 am MDT
Extended Forecast for

Lewistown MT

  • Overnight

    Overnight: Partly cloudy, with a low around 51. South southeast wind 7 to 9 mph.

    Partly Cloudy

    Low: 51 °F

  • Monday

    Monday: Mostly sunny, with a high near 86. Southeast wind 6 to 14 mph becoming southwest in the afternoon. Winds could gust as high as 24 mph.

    Mostly Sunny

    High: 86 °F

  • Monday
    Night

    Monday Night: A 30 percent chance of showers and thunderstorms.  Cloudy during the early evening, then becoming partly cloudy, with a low around 50. South wind 6 to 9 mph becoming west after midnight.

    Chance
    Showers

    Low: 50 °F

  • Tuesday

    Tuesday: A chance of showers and thunderstorms before 9am, then a chance of rain after 9am.  Mostly cloudy, with a high near 63. Northwest wind 7 to 14 mph, with gusts as high as 25 mph.  Chance of precipitation is 50%.

    Chance
    Showers

    High: 63 °F

  • Tuesday
    Night

    Tuesday Night: A 30 percent chance of rain before midnight.  Partly cloudy, with a low around 41. Southwest wind 6 to 13 mph, with gusts as high as 26 mph.

    Chance Rain
    then Mostly
    Clear

    Low: 41 °F

  • Wednesday

    Wednesday: Sunny, with a high near 69.

    Sunny

    High: 69 °F

  • Wednesday
    Night

    Wednesday Night: A slight chance of rain before midnight, then a slight chance of showers and thunderstorms after midnight.  Partly cloudy, with a low around 43. Chance of precipitation is 20%.

    Slight Chance
    Rain then
    Slight Chance
    T-storms

    Low: 43 °F

  • Thursday

    Thursday: A chance of showers and thunderstorms, mainly after noon.  Partly sunny, with a high near 64.

    Slight Chance
    T-storms then
    Chance
    Showers

    High: 64 °F

  • Thursday
    Night

    Thursday Night: A chance of rain.  Mostly cloudy, with a low around 42.

    Chance Rain

    Low: 42 °F

Detailed Forecast

Overnight
Partly cloudy, with a low around 51. South southeast wind 7 to 9 mph.
Monday
Mostly sunny, with a high near 86. Southeast wind 6 to 14 mph becoming southwest in the afternoon. Winds could gust as high as 24 mph.
Monday Night
A 30 percent chance of showers and thunderstorms. Cloudy during the early evening, then becoming partly cloudy, with a low around 50. South wind 6 to 9 mph becoming west after midnight.
Tuesday
A chance of showers and thunderstorms before 9am, then a chance of rain after 9am. Mostly cloudy, with a high near 63. Northwest wind 7 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.
Tuesday Night
A 30 percent chance of rain before midnight. Partly cloudy, with a low around 41. Southwest wind 6 to 13 mph, with gusts as high as 26 mph.
Wednesday
Sunny, with a high near 69.
Wednesday Night
A slight chance of rain before midnight, then a slight chance of showers and thunderstorms after midnight. Partly cloudy, with a low around 43. Chance of precipitation is 20%.
Thursday
A chance of showers and thunderstorms, mainly after noon. Partly sunny, with a high near 64.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 42.
Friday
A chance of rain. Partly sunny, with a high near 60.
Friday Night
Rain likely. Mostly cloudy, with a low around 41.
Saturday
A chance of rain. Mostly cloudy, with a high near 57.
Saturday Night
A chance of rain. Partly cloudy, with a low around 39.
Sunday
A slight chance of rain. Sunny, with a high near 64.
Click Map For Forecast
Point Forecast:
Lewistown MT
 47.07°N 109.43°W (Elev. 3898 ft)
11:03 pm MDT Sep 15, 2019
2am MDT Sep 16, 2019-6pm MDT Sep 22, 2019
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database