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Lewistown, MT
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7-Day Forecast
Tonight
Partly Cloudy
Low: 30°
Partly cloudy with a low around 30. East southeast wind 6 to 11 mph with gusts as high as 20 mph.
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Friday
Slight Chance Showers then Sunny
High: 55°
A slight chance of showers between 10am and noon. Sunny with a high near 55. East southeast wind 6 to 15 mph with gusts as high as 26 mph. Chance of precipitation is 20%.
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Friday Night
Partly Cloudy
Low: 34°
Partly cloudy with a low around 34. Southeast wind 6 to 14 mph with gusts as high as 25 mph.
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Saturday
Mostly Sunny then Chance Showers
High: 69°
A 30% chance of showers and thunderstorms after noon. Mostly sunny with a high near 69. Calm wind becoming north around 5 mph in the afternoon.
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Saturday Night
Chance Showers then Mostly Cloudy
Low: 41°
A 30% chance of showers before midnight. Mostly cloudy with a low around 41. Southeast wind around 6 mph becoming calm after midnight.
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Sunday
Chance Showers then Showers
High: 65°
A chance of showers, then showers and possibly a thunderstorm after noon. High near 65. Calm wind becoming north northwest 5 to 8 mph in the afternoon. Chance of precipitation is 80%.
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Sunday Night
Showers
Low: 38°
Showers and possibly a thunderstorm. Low around 38. North northwest wind around 10 mph with gusts as high as 18 mph. Chance of precipitation is 80%.
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Monday
Showers Likely
High: 50°
Showers likely, mainly before noon. Mostly cloudy with a high near 50. Northwest wind 13 to 15 mph with gusts as high as 24 mph.
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Monday Night
Partly Cloudy
Low: 35°
Partly cloudy with a low around 35.
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Tuesday
Mostly Sunny then Slight Chance Showers
High: 62°
A slight chance of showers after noon. Partly sunny with a high near 62.
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Tuesday Night
Chance Showers
Low: 41°
A chance of showers. Mostly cloudy with a low around 41.
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Wednesday
Chance Showers
High: 58°
A chance of showers. Partly sunny with a high near 58.
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Wednesday Night
Slight Chance Showers then Partly Cloudy
Low: 37°
A slight chance of showers. Partly cloudy with a low around 37.
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Thursday
Mostly Sunny
High: 65°
Mostly sunny with a high near 65.
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Source: National Weather Service
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