National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Thunderstorms, Heavy Rain and Heat in the Memorial Day Forecast

Strong to severe thunderstorms and heavy rain with possible flash flooding are expected from Texas to the Upper Mississippi Valley on Memorial Day. Also, a soaking rain with flooding is expected across south-central Florida. Meanwhile, a week of record breaking heat is going to get started across California into the Southwest and Great Basin, as excessive heat warnings stretch across the region. Read More >

Current conditions at

Lewistown, Lewistown Municipal Airport (KLWT)

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

Clear

66°F

19°C

Humidity 34%
Wind Speed N 0 MPH
Barometer 29.96 in (1014.56 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 25 May 06:20 PM MDT
Extended Forecast for

Lewistown MT

  • Tonight

    Tonight: A 30 percent chance of showers, mainly before 1am. Increasing clouds, with a low around 48. West wind 9 to 11 mph becoming south in the evening.

    Chance
    Showers

    Low: 48 °F

  • Tuesday

    Tuesday: Mostly cloudy, then gradually becoming sunny, with a high near 70. West northwest wind 7 to 16 mph, with gusts as high as 25 mph.

    Decreasing
    Clouds

    High: 70 °F

  • Tuesday
    Night

    Tuesday Night: Partly cloudy, with a low around 45. West wind 6 to 11 mph, with gusts as high as 24 mph.

    Partly Cloudy

    Low: 45 °F

  • Wednesday

    Wednesday: Partly sunny, with a high near 67. West wind 6 to 10 mph.

    Partly Sunny

    High: 67 °F

  • Wednesday
    Night

    Wednesday Night: Partly cloudy, with a low around 43. North wind 5 to 8 mph becoming east after midnight.

    Partly Cloudy

    Low: 43 °F

  • Thursday

    Thursday: Mostly sunny, with a high near 70. East southeast wind 5 to 9 mph.

    Mostly Sunny

    High: 70 °F

  • Thursday
    Night

    Thursday Night: Partly cloudy, with a low around 47. East southeast wind around 10 mph.

    Partly Cloudy

    Low: 47 °F

  • Friday

    Friday: Mostly sunny, with a high near 78. East southeast wind 8 to 11 mph.

    Mostly Sunny

    High: 78 °F

  • Friday
    Night

    Friday Night: Mostly cloudy, with a low around 54.

    Mostly Cloudy

    Low: 54 °F

Detailed Forecast

Tonight
A 30 percent chance of showers, mainly before 1am. Increasing clouds, with a low around 48. West wind 9 to 11 mph becoming south in the evening.
Tuesday
Mostly cloudy, then gradually becoming sunny, with a high near 70. West northwest wind 7 to 16 mph, with gusts as high as 25 mph.
Tuesday Night
Partly cloudy, with a low around 45. West wind 6 to 11 mph, with gusts as high as 24 mph.
Wednesday
Partly sunny, with a high near 67. West wind 6 to 10 mph.
Wednesday Night
Partly cloudy, with a low around 43. North wind 5 to 8 mph becoming east after midnight.
Thursday
Mostly sunny, with a high near 70. East southeast wind 5 to 9 mph.
Thursday Night
Partly cloudy, with a low around 47. East southeast wind around 10 mph.
Friday
Mostly sunny, with a high near 78. East southeast wind 8 to 11 mph.
Friday Night
Mostly cloudy, with a low around 54.
Saturday
Partly sunny, with a high near 86.
Saturday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 57.
Sunday
Mostly sunny, with a high near 89.
Sunday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 54.
Monday
Mostly sunny, with a high near 84.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
Lewistown MT
 47.07°N 109.43°W (Elev. 3898 ft)
Last Update:
4:37 pm MDT May 25, 2020
Forecast Valid:
6pm MDT May 25, 2020-6pm MDT Jun 1, 2020
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation