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Lewistown, MT
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7-Day Forecast
Tonight
Chance Snow
Low: 0°
A 50% chance of snow. Cloudy with a low around 0. Wind chill values as low as -10. West northwest wind 6 to 8 mph with gusts as high as 20 mph. Total nighttime snow accumulation of less than one inch possible.
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Saturday
Snow Likely then Chance Snow
High: 5°
Snow likely, mainly before 2pm. Cloudy, then gradually becoming mostly sunny and cold with a temperature falling to around -7 by 5pm. Wind chill values as low as -25. Northwest wind 13 to 18 mph with gusts as high as 29 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
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Saturday Night
Partly Cloudy
Low: -14°
Partly cloudy with a low around -14. Wind chill values as low as -25. West wind around 5 mph becoming calm in the evening.
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Sunday
Cold
High: 2°
Partly sunny and cold with a high near 2. Wind chill values as low as -20. Calm wind becoming northwest 5 to 9 mph in the afternoon. Winds could gust as high as 18 mph.
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Sunday Night
Partly Cloudy
Low: -18°
Partly cloudy with a low around -18. West wind 6 to 9 mph with gusts as high as 18 mph.
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M.L.King Day
Sunny
High: 7°
Sunny with a high near 7. West southwest wind around 6 mph.
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Monday Night
Mostly Cloudy
Low: 0°
Mostly cloudy with a low around 0. Southwest wind 6 to 8 mph.
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Tuesday
Partly Sunny
High: 33°
Partly sunny with a high near 33. West southwest wind 9 to 11 mph with gusts as high as 23 mph.
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Tuesday Night
Slight Chance Snow
Low: 13°
A slight chance of snow after 11pm. Mostly cloudy with a low around 13.
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Wednesday
Slight Chance Snow
High: 26°
A slight chance of snow. Partly sunny with a high near 26.
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Wednesday Night
Mostly Cloudy
Low: 11°
Mostly cloudy with a low around 11.
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Thursday
Partly Sunny
High: 32°
Partly sunny with a high near 32.
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Thursday Night
Chance Snow
Low: 19°
A chance of snow. Mostly cloudy with a low around 19.
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Friday
Chance Snow
High: 36°
A chance of snow. Mostly cloudy with a high near 36.
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Source: National Weather Service
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