Lewistown Airport (LWT) Weather 07/13/2026
Today
70
Mostly Sunny
Tonight
45
Partly Cloudy
Wednesday
72
Mostly Sunny then Showers Likely
Wednesday Night
46
Chance T-storms then Slight Chance Showers
Thursday
75
Mostly Sunny then Chance Showers
Thursday Night
47
Slight Chance T-storms then Partly Cloudy
Friday
75
Partly Sunny then Showers Likely
Friday Night
46
Chance T-storms then Partly Cloudy
Independence Day
76
Sunny
Saturday Night
49
Mostly Clear
Sunday
84
Sunny
Sunday Night
52
Mostly Clear
Monday
84
Sunny
Weekly Forecast
Today
Mostly sunny, with a high near 70. West northwest wind 8 to 17 mph, with gusts as high as 26 mph.
Tonight
Partly cloudy, with a low around 45. West northwest wind 5 to 7 mph becoming light and variable after midnight.
Wednesday
Showers and thunderstorms likely, mainly before 4pm. Increasing clouds, with a high near 72. Light and variable wind becoming west around 5 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 46. Calm wind becoming south around 5 mph. Chance of precipitation is 50%.
Thursday
A 30 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 75. Calm wind becoming west around 5 mph in the afternoon.
Thursday Night
A slight chance of showers and thunderstorms before 9pm, then a slight chance of showers between 9pm and midnight. Partly cloudy, with a low around 47. Calm wind becoming south southeast around 5 mph. Chance of precipitation is 20%.
Friday
Showers likely and possibly a thunderstorm after noon. Partly sunny, with a high near 75. Calm wind becoming west northwest around 5 mph in the afternoon. Chance of precipitation is 60%.
Friday Night
A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 46. West northwest wind around 5 mph becoming light and variable in the evening.
Independence Day
Sunny, with a high near 76.
Saturday Night
Mostly clear, with a low around 49.
Sunday
Sunny, with a high near 84.
Sunday Night
Mostly clear, with a low around 52.
Monday
Sunny, with a high near 84.