Heat Across the Center of the Nation; Severe Thunderstorms Across the Great Lakes and Ohio Valley

Heat expands across the Desert Southwest, Plains, Mississippi Valley and Midwest into Monday. Fire weather concerns continue for portions of the Intermountain West. Active monsoonal moisture fuels thunderstorms over the Southwest with possible flash flooding. Tropical cyclone Fausto in the Pacific, should weaken as it approaches Hawaii; Dangerous surf, swells and rip currents are expected. Read More >

Current conditions at

Lewistown, Lewistown Municipal Airport (KLWT)

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

Clear

86°F

30°C

Humidity 30%
Wind Speed W 17 MPH
Barometer 30.0 in (1015.92 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Heat Index84°F (29°C)
Last update 24 Jul 11:00 AM MDT
Extended Forecast for

6 Miles N Lewistown MT

  • Overnight

    Overnight: A 20 percent chance of showers before 1am.  Areas of smoke. Partly cloudy, with a low around 61. South wind around 5 mph becoming light and variable.

    Low: 61 °F

    Slight Chance
    Showers

  • Monday

    Monday: Widespread smoke, mainly after 1pm. Mostly sunny, with a high near 88. Light and variable wind becoming north northwest around 6 mph in the morning.

    High: 88 °F

    Smoke

  • Monday Night

    Monday Night: Widespread smoke, mainly before 4am. Partly cloudy, with a low around 61. Northeast wind 5 to 8 mph becoming south southeast after midnight.

    Low: 61 °F

    Smoke

  • Tuesday

    Tuesday: Areas of smoke. Mostly sunny, with a high near 90. Calm wind becoming west around 6 mph in the afternoon.

    High: 90 °F

    Areas Smoke

  • Tuesday Night

    Tuesday Night: Areas of smoke before 7pm. Mostly clear, with a low around 61. Northwest wind around 6 mph becoming light and variable  after midnight.

    Low: 61 °F

    Areas Smoke
    then Mostly
    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 92. Calm wind becoming north northwest around 6 mph in the morning.

    High: 92 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 61. East northeast wind around 6 mph becoming south southeast after midnight.

    Low: 61 °F

    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 94. Calm wind becoming north northwest around 6 mph in the afternoon.

    High: 94 °F

    Sunny

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms.  Partly cloudy, with a low around 62.

    Low: 62 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

Detailed Forecast

Overnight
A 20 percent chance of showers before 1am. Areas of smoke. Partly cloudy, with a low around 61. South wind around 5 mph becoming light and variable.
Monday
Widespread smoke, mainly after 1pm. Mostly sunny, with a high near 88. Light and variable wind becoming north northwest around 6 mph in the morning.
Monday Night
Widespread smoke, mainly before 4am. Partly cloudy, with a low around 61. Northeast wind 5 to 8 mph becoming south southeast after midnight.
Tuesday
Areas of smoke. Mostly sunny, with a high near 90. Calm wind becoming west around 6 mph in the afternoon.
Tuesday Night
Areas of smoke before 7pm. Mostly clear, with a low around 61. Northwest wind around 6 mph becoming light and variable after midnight.
Wednesday
Sunny, with a high near 92. Calm wind becoming north northwest around 6 mph in the morning.
Wednesday Night
Partly cloudy, with a low around 61. East northeast wind around 6 mph becoming south southeast after midnight.
Thursday
Sunny, with a high near 94. Calm wind becoming north northwest around 6 mph in the afternoon.
Thursday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 62.
Friday
Sunny and hot, with a high near 96.
Friday Night
Mostly clear, with a low around 62.
Saturday
Sunny and hot, with a high near 102.
Saturday Night
Mostly clear, with a low around 65.
Sunday
Sunny, with a high near 92.
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles N Lewistown MT
 47.15°N 109.44°W (Elev. 4094 ft)
10:41 pm MDT Jul 26, 2026
12am MDT Jul 27, 2026-6pm MDT Aug 2, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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