PNS25-72: Soliciting Comments through December 19, 2025 on the Discontinuation of the Max/Min Temperature and Precipitation Table Product (RTP) for all NWS Alaska Region, Eastern Region, and Western Region Offices.

Lewistown, Lewistown Municipal Airport (KLWT)

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

Overcast

32°F

0°C

Humidity	74%
Wind Speed	WNW 11 MPH
Barometer	29.87 in (1011.51 mb)
Dewpoint	25°F (-4°C)
Visibility	10.00 mi
Wind Chill	23°F (-5°C)
Last update	05 Dec 01:20 AM MST

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

Lewistown MT

Overnight
Low: 21 °F
Chance Snow
Friday
High: 35 °F
Chance Snow
Friday Night
Low: 19 °F
Snow
Saturday
High: 33 °F
Snow Likely
then Chance
Snow
Saturday Night
Low: 20 °F
Chance Snow
then Mostly
Cloudy
Sunday
High: 40 °F
Partly Sunny
Sunday Night
Low: 27 °F
Mostly Cloudy
Monday
High: 41 °F
Mostly Sunny
Monday Night
Low: 28 °F
Slight Chance
Rain/Snow

Detailed Forecast

Overnight

A 50 percent chance of snow, mainly after 4am. Mostly cloudy, with a low around 21. West wind around 10 mph, with gusts as high as 18 mph. Total nighttime snow accumulation of less than a half inch possible.

Friday

A chance of snow before 11am, then a slight chance of snow after 4pm. Cloudy, then gradually becoming mostly sunny, with a high near 35. West wind 5 to 7 mph becoming light and variable. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.

Friday Night

Snow, mainly after 8pm. Low around 19. Southeast wind 7 to 9 mph becoming west after midnight. Winds could gust as high as 23 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.

Saturday

Snow likely, mainly before 11am. Cloudy, with a high near 33. West northwest wind 3 to 8 mph. Chance of precipitation is 70%. New snow accumulation of around an inch possible.

Saturday Night

A 30 percent chance of snow before 11pm. Mostly cloudy, with a low around 20. West southwest wind 5 to 11 mph, with gusts as high as 21 mph. New snow accumulation of less than a half inch possible.

Sunday

Partly sunny, with a high near 40. West wind around 11 mph, with gusts as high as 22 mph.

Sunday Night

Mostly cloudy, with a low around 27. West southwest wind 14 to 18 mph, with gusts as high as 31 mph.

Monday

Mostly sunny, with a high near 41. West wind 14 to 18 mph, with gusts as high as 32 mph.

Monday Night

A slight chance of rain and snow after 11pm. Mostly cloudy, with a low around 28.

Tuesday

A chance of rain before 2pm, then a chance of rain and snow. Mostly cloudy, with a high near 46. Breezy.

Tuesday Night

Rain and snow likely. Mostly cloudy, with a low around 25.