Lewistown Airport (LWT) Weather 12/15/2025
Overnight
34
Chance Snow
Friday
35
Chance Snow then Partly Sunny
Friday Night
20
Snow
Saturday
33
Snow Likely then Slight Chance Snow
Saturday Night
20
Chance Snow then Mostly Cloudy
Sunday
39
Partly Sunny
Sunday Night
27
Mostly Cloudy
Monday
41
Mostly Sunny
Monday Night
31
Chance Rain/Snow then Chance Rain
Tuesday
45
Chance Rain/Snow and Breezy
Tuesday Night
23
Rain/Snow Likely then Chance Snow
Wednesday
37
Chance Snow
Wednesday Night
23
Rain/Snow Likely
Weekly Forecast
Overnight
A 40 percent chance of snow. Cloudy, with a steady temperature around 34. West northwest wind around 10 mph, with gusts as high as 18 mph. Total nighttime snow accumulation of less than a half inch possible.
Friday
A 30 percent chance of snow between 8am and 11am. Cloudy, then gradually becoming mostly sunny, with a temperature rising to near 35 by noon, then falling to around 29 during the remainder of the day. West wind 5 to 8 mph becoming light and variable. New snow accumulation of less than a half inch possible.
Friday Night
Snow. Low around 20. South southwest wind 8 to 11 mph becoming west after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 2 inches possible.
Saturday
Snow likely, mainly before 11am. Mostly cloudy, with a high near 33. West northwest wind 6 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.
Saturday Night
A 40 percent chance of snow before 11pm. Mostly cloudy, with a low around 20. West southwest wind 6 to 14 mph, with gusts as high as 25 mph. New snow accumulation of less than a half inch possible.
Sunday
Partly sunny, with a high near 39. West wind 10 to 15 mph, with gusts as high as 28 mph.
Sunday Night
Mostly cloudy, with a low around 27. West southwest wind 13 to 17 mph, with gusts as high as 31 mph.
Monday
Mostly sunny, with a high near 41. West wind 14 to 17 mph, with gusts as high as 32 mph.
Monday Night
A slight chance of rain and snow before 8pm, then a chance of rain. Cloudy, with a low around 31.
Tuesday
A chance of rain before 11am, then a chance of rain and snow. Mostly cloudy, with a high near 45. Breezy.
Tuesday Night
Rain and snow likely. Mostly cloudy, with a low around 23.
Wednesday
A chance of snow. Mostly cloudy, with a high near 37.
Wednesday Night
Rain and snow likely. Mostly cloudy, with a low around 23.