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- This Saturday, June 27: Great Falls Disaster Response Expo - FREE and Family-Friendly Event, Great Falls College at MSU
- SCN26-50: Discontinuation of the State Forecast Product (SFP) for all NWS Central Region, Southern Region, and Western Region Offices: Effective June 29, 2026
- The Regional Temperatures and Precipitation Product for the State of Montana (RTPMT) will now be discontinued on July 7, 2026.
Current conditions at
Lewistown, Lewistown Municipal Airport (KLWT)
Lat: 47.04917°NLon: 109.46639°WElev: 4167.0ft.
Clear
64°F
18°C
| Humidity | 48% |
| Wind Speed | N 5 MPH |
| Barometer | 30.28 in (1025.4 mb) |
| Dewpoint | 44°F (7°C) |
| Visibility | 10.00 mi |
| Last update | 23 Jun 04:25 PM MDT |
Extended Forecast for
Lewistown MT
Overnight
Low: 46 °F
Mostly Cloudy
Wednesday
High: 71 °F
Slight Chance
Showers then
Slight Chance
T-stormsWednesday Night
Low: 45 °F
Partly Cloudy
Thursday
High: 71 °F
Chance
Showers then
Showers
LikelyThursday Night
Low: 46 °F
Chance
T-storms then
Mostly CloudyFriday
High: 76 °F
Mostly Cloudy
then Chance
T-stormsFriday Night
Low: 46 °F
Showers then
Chance
ShowersSaturday
High: 67 °F
Showers
Saturday Night
Low: 42 °F
Showers
Likely
Detailed Forecast
Overnight
Mostly cloudy, with a steady temperature around 46. Light east southeast wind.
Wednesday
A 20 percent chance of showers and thunderstorms, mainly between 4pm and 5pm. Cloudy, then gradually becoming mostly sunny, with a high near 71. Calm wind becoming east around 5 mph in the afternoon.
Wednesday Night
Partly cloudy, with a low around 45. East southeast wind 6 to 9 mph, with gusts as high as 18 mph.
Thursday
A chance of showers before noon, then a chance of showers and thunderstorms between noon and 1pm, then showers likely and possibly a thunderstorm after 1pm. Cloudy, with a high near 71. East southeast wind 5 to 7 mph. Chance of precipitation is 70%.
Thursday Night
A chance of showers and thunderstorms before 9pm, then a chance of showers between 9pm and midnight. Mostly cloudy, with a low around 46. East southeast wind 3 to 6 mph. Chance of precipitation is 30%.
Friday
A 50 percent chance of showers and thunderstorms after noon. Mostly cloudy, with a high near 76. South southeast wind 3 to 7 mph.
Friday Night
Showers and possibly a thunderstorm before midnight, then a chance of showers. Low around 46. South southeast wind 5 to 8 mph becoming west southwest in the evening. Chance of precipitation is 90%.
Saturday
A chance of showers, then showers and possibly a thunderstorm after noon. Mostly cloudy, with a high near 67. West northwest wind 3 to 5 mph.
Saturday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 42.
Sunday
Showers likely, with thunderstorms also possible after noon. Cloudy, with a high near 60.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 41.
Monday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 63. Breezy.
Monday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 43.
Tuesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 71.
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Lewistown MT
47.07°N 109.43°W (Elev. 3898 ft)
47.07°N 109.43°W (Elev. 3898 ft)
12:31 am MDT Jun 24, 2026
3am MDT Jun 24, 2026-6pm MDT Jun 30, 2026
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