Sunday
Chance of rain
High:
59°F
A 50 percent chance of rain. Mostly cloudy, with a high near 59. Southwest wind 6 to 10 mph becoming northwest in the afternoon.
Lewistown, MT Weather - Extended Forecast
Sunday Night
Chance of rain
Overnight low:
36°F
A 20 percent chance of rain. Mostly cloudy, with a low around 36. Southwest wind 6 to 9 mph.
Monday
Chance of rain
High:
57°F
A chance of rain, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 57. South southwest wind 6 to 15 mph becoming west in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 70%.
Monday Night
Chance of showers
Overnight low:
30°F
A 40 percent chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 30. West wind around 18 mph, with gusts as high as 29 mph.
Tuesday
Breezy. mostly sunny
High:
52°F
Tuesday Night
Chance of rain or snow
Overnight low:
30°F
Wednesday
Chance of rain or snow
High:
53°F
Wednesday Night
Slight chance of thunderstorms
Overnight low:
32°F
Thursday
Mostly sunny
High:
60°F
Thursday Night
Chance of rain
Overnight low:
38°F
Friday
Chance of rain
High:
62°F