Lewistown Airport (LWT) Weather 08/02/2026
Tonight
57
Patchy Smoke
Wednesday
90
Areas Smoke
Wednesday Night
56
Slight Chance T-storms then Patchy Smoke
Thursday
91
Mostly Sunny then Slight Chance T-storms
Thursday Night
57
Slight Chance T-storms then Chance Showers
Friday
93
Sunny
Friday Night
60
Clear
Saturday
98
Hot
Saturday Night
58
Mostly Clear
Sunday
87
Sunny
Sunday Night
49
Chance Showers
Monday
73
Mostly Sunny
Monday Night
47
Mostly Clear
Weekly Forecast
Tonight
Patchy smoke. Mostly clear, with a low around 57. East wind around 6 mph becoming light and variable after midnight.
Wednesday
Areas of smoke. Sunny, with a high near 90. Light and variable wind becoming west around 6 mph in the afternoon.
Wednesday Night
A 20 percent chance of showers and thunderstorms before 8pm. Patchy smoke before 2am, then patchy smoke after 4am. Mostly cloudy, with a low around 56. East wind 5 to 7 mph becoming south in the evening.
Thursday
A slight chance of showers between noon and 3pm, then a slight chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 91. Calm wind becoming north northwest around 5 mph in the afternoon. Chance of precipitation is 20%.
Thursday Night
A slight chance of showers and thunderstorms before midnight, then a chance of showers between midnight and 3am, then a chance of showers and thunderstorms after 3am. Partly cloudy, with a low around 57. Northeast wind 5 to 9 mph becoming south after midnight. Chance of precipitation is 30%.
Friday
Sunny, with a high near 93. Light and variable wind becoming north northwest 5 to 7 mph in the afternoon.
Friday Night
Clear, with a low around 60. North wind 5 to 8 mph becoming south southeast after midnight.
Saturday
Sunny and hot, with a high near 98. Light south southeast wind becoming south southwest 5 to 9 mph in the afternoon. Winds could gust as high as 20 mph.
Saturday Night
Mostly clear, with a low around 58.
Sunday
Sunny, with a high near 87.
Sunday Night
A chance of showers. Partly cloudy, with a low around 49.
Monday
Mostly sunny, with a high near 73.
Monday Night
Mostly clear, with a low around 47.