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.

Hazardous Weather Conditions

Winter Weather Advisory in effect from December 2, 05:00 AM MST until December 3, 05:00 AM MST

Current conditions at

Lewistown, Lewistown Municipal Airport (KLWT)

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

Clear

14°F

-10°C

Humidity	60%
Wind Speed	NW 4 MPH
Barometer	30.04 in (1017.27 mb)
Dewpoint	3°F (-16°C)
Visibility	10.00 mi
Wind Chill	7°F (-14°C)
Last update	01 Dec 02:54 AM MST

More Information:

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

Extended Forecast for

Lewistown Municipal MT

Winter Weather Advisory December 2, 05:00am until December 3, 05:00am

Click here for hazard details and duration

Winter Weather Advisory

Overnight
Low: 11 °F
Partly Cloudy
Monday
High: 34 °F
Partly Sunny
Monday Night
Low: 23 °F
Chance Snow
Tuesday
High: 33 °F
Snow
Tuesday Night
Low: 12 °F
Snow Likely
then Slight
Chance Snow
Wednesday
High: 32 °F
Partly Sunny
Wednesday Night
Low: 18 °F
Mostly Cloudy
Thursday
High: 37 °F
Partly Sunny
Thursday Night
Low: 22 °F
Chance Snow

Detailed Forecast

Overnight

Partly cloudy, with a steady temperature around 11. Wind chill values as low as zero. Southwest wind around 7 mph.

Monday

Partly sunny, with a high near 34. West southwest wind 6 to 9 mph.

Monday Night

A 30 percent chance of snow, mainly after 4am. Mostly cloudy, with a low around 23. West southwest wind around 10 mph, with gusts as high as 18 mph. New snow accumulation of less than one inch possible.

Tuesday

Snow. High near 33. West northwest wind 9 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.

Tuesday Night

Snow likely, mainly before 11pm. Cloudy, with a low around 12. Northwest wind 9 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.

Wednesday

Partly sunny, with a high near 32. Southwest wind around 6 mph.

Wednesday Night

Mostly cloudy, with a low around 18. West southwest wind 8 to 10 mph, with gusts as high as 18 mph.

Thursday

Partly sunny, with a high near 37. West southwest wind 8 to 10 mph, with gusts as high as 20 mph.

Thursday Night

A chance of snow. Mostly cloudy, with a low around 22.

Friday

A chance of snow. Mostly cloudy, with a high near 39.

Friday Night

Snow likely. Mostly cloudy, with a low around 13.