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

Lewistown, Lewistown Municipal Airport (KLWT)

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

NA

45°F

7°C

Humidity 48%
Wind Speed W 8 MPH
Barometer 29.68 in (1005.08 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 15 Apr 02:05 AM MDT
Extended Forecast for

Lewistown Municipal MT

  • Overnight

    Overnight: Mostly cloudy, with a low around 23. West southwest wind around 7 mph.

    Low: 23 °F

    Mostly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 55. West northwest wind 8 to 13 mph, with gusts as high as 23 mph.

    High: 55 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 28. Northwest wind 6 to 10 mph becoming south in the evening.

    Low: 28 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 65. South southwest wind 5 to 7 mph becoming west in the afternoon.

    High: 65 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 40. West wind 8 to 10 mph becoming south in the evening.

    Low: 40 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 71. Southwest wind 6 to 8 mph becoming northwest in the afternoon.

    High: 71 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 44. North northwest wind around 8 mph becoming south after midnight.

    Low: 44 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 78. South wind 7 to 10 mph, with gusts as high as 18 mph.

    High: 78 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 49.

    Low: 49 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 23. West southwest wind around 7 mph.
Saturday
Sunny, with a high near 55. West northwest wind 8 to 13 mph, with gusts as high as 23 mph.
Saturday Night
Mostly clear, with a low around 28. Northwest wind 6 to 10 mph becoming south in the evening.
Sunday
Sunny, with a high near 65. South southwest wind 5 to 7 mph becoming west in the afternoon.
Sunday Night
Partly cloudy, with a low around 40. West wind 8 to 10 mph becoming south in the evening.
Monday
Mostly sunny, with a high near 71. Southwest wind 6 to 8 mph becoming northwest in the afternoon.
Monday Night
Partly cloudy, with a low around 44. North northwest wind around 8 mph becoming south after midnight.
Tuesday
Mostly sunny, with a high near 78. South wind 7 to 10 mph, with gusts as high as 18 mph.
Tuesday Night
Partly cloudy, with a low around 49.
Wednesday
A chance of rain after noon. Partly sunny, with a high near 69.
Wednesday Night
Rain and snow. Mostly cloudy, with a low around 30.
Thursday
Rain and snow. Mostly cloudy, with a high near 41. Breezy.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 22.
Friday
A chance of snow. Partly sunny, with a high near 42.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lewistown Municipal MT
 47.04°N 109.45°W (Elev. 4111 ft)
Last Update:
12:31 am MDT Apr 18, 2026
Forecast Valid:
1am MDT Apr 18, 2026-6pm MDT Apr 24, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation