Saturday
Mostly sunny
High:
76°F
A 20 percent chance of showers and thunderstorms after noon. Mostly sunny, with a high near 76. Calm wind becoming south southeast 5 to 7 mph in the afternoon.
Lewistown, MT Weather - Extended Forecast
Saturday Night
Showers likely
Overnight low:
43°F
Showers likely and possibly a thunderstorm before midnight, then a chance of rain after midnight. Mostly cloudy, with a low around 43. West northwest wind 5 to 8 mph. Chance of precipitation is 60%.
Sunday
Chance of rain
High:
62°F
A chance of rain, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 62. Northwest wind 5 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 60%.
Sunday Night
Chance of rain
Overnight low:
38°F
A chance of rain, mainly before midnight. Mostly cloudy, with a low around 38. West northwest wind 5 to 9 mph becoming south after midnight. Winds could gust as high as 18 mph.
Monday
Sunny
High:
72°F
Monday Night
Slight chance of thunderstorms
Overnight low:
45°F
Tuesday
Mostly cloudy
High:
74°F
Tuesday Night
Chance of thunderstorms
Overnight low:
45°F
Wednesday
Rain Likely
High:
69°F