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.

Overcast

34°F

1°C

Humidity	69%
Wind Speed	W 17 MPH
Barometer	29.72 in (1006.44 mb)
Dewpoint	25°F (-4°C)
Visibility	10.00 mi
Wind Chill	23°F (-5°C)
Last update	02 Dec 02:20 AM MST

More Information:

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

Extended Forecast for

Lewistown 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: 30 °F
Snow
Tuesday
High: 34 °F
Snow and
Patchy Fog
then Snow
Likely and
Patchy Fog
Tuesday Night
Low: 13 °F
Snow Likely
and Patchy
Fog then
Chance Snow
and Patchy
Fog
Wednesday
High: 32 °F
Decreasing
Clouds
Wednesday Night
Low: 18 °F
Mostly Cloudy
Thursday
High: 38 °F
Partly Sunny
Thursday Night
Low: 21 °F
Chance Snow
Friday
High: 38 °F
Snow Likely
Friday Night
Low: 21 °F
Rain/Snow
Likely

Detailed Forecast

Overnight

Snow, mainly after 4am. Steady temperature around 30. West wind around 13 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of less than one inch possible.

Tuesday

Snow. Patchy fog. High near 34. West northwest wind 13 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

Tuesday Night

Snow likely, mainly before 1am. Patchy fog before 2am. Otherwise, cloudy, with a low around 13. Northwest wind 5 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New snow accumulation of around an inch possible.

Wednesday

Cloudy, then gradually becoming mostly sunny, with a high near 32. Calm wind becoming south southwest around 5 mph in the afternoon.

Wednesday Night

Mostly cloudy, with a low around 18. South wind 7 to 10 mph becoming west southwest after midnight. Winds could gust as high as 20 mph.

Thursday

Partly sunny, with a high near 38. West southwest wind around 10 mph, with gusts as high as 21 mph.

Thursday Night

A 40 percent chance of snow, mainly before 11pm. Mostly cloudy, with a low around 21. West wind 11 to 14 mph, with gusts as high as 23 mph. New snow accumulation of less than one inch possible.

Friday

Snow likely, mainly after 5pm. Mostly cloudy, with a high near 38. Southwest wind 7 to 10 mph, with gusts as high as 20 mph.

Friday Night

Rain and snow likely before 2am, then a chance of snow. Mostly cloudy, with a low around 21.

Saturday

Snow likely, mainly before 11am. Mostly cloudy, with a high near 36.

Saturday Night

A chance of snow. Mostly cloudy, with a low around 21.

Sunday

Partly sunny, with a high near 41.

Sunday Night

Mostly cloudy, with a low around 26.