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Lewistown, MT
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7-Day Forecast
Today
Partly Sunny then Chance Rain
High: 50°
A 30% chance of rain, mainly after 4pm.
Partly sunny with a high near 50.
South southwest wind around 7 mph.
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Tonight
Rain Likely then Rain/Snow Likely
Low: 28°
Rain and snow likely before 5am,
then a chance of snow.
Mostly cloudy with a low around 28.
South wind 5 to 7 mph becoming light and variable in the evening.
Chance of precipitation is 60%.
New snow accumulation of less than a half inch possible.
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Tuesday
Snow Likely then Rain/Snow Likely
High: 39°
Snow likely before 3pm,
then snow likely, possibly mixed with rain.
Cloudy with a high near 39.
Northwest wind 5 to 10 mph
with gusts as high as 20 mph.
Chance of precipitation is 70%.
New snow accumulation of less than a half inch possible.
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Tuesday Night
Rain/Snow Likely then Chance Snow
Low: 29°
Rain and snow likely, becoming all snow after 9pm.
Cloudy with a low around 29.
North northwest wind 5 to 9 mph.
Chance of precipitation is 70%.
New snow accumulation of less than a half inch possible.
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Wednesday
Chance Snow then Chance Rain/Snow
High: 40°
A chance of snow before 3pm,
then a chance of rain.
Mostly cloudy with a high near 40.
Northwest wind 5 to 9 mph.
Chance of precipitation is 40%.
New snow accumulation of less than a half inch possible.
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Wednesday Night
Chance Rain/Snow then Chance Snow
Low: 24°
A chance of rain and snow before midnight,
then a chance of snow.
Mostly cloudy with a low around 24.
Northwest wind 5 to 7 mph becoming light and variable in the evening.
Chance of precipitation is 50%.
New snow accumulation of less than a half inch possible.
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Thursday
Chance Snow
High: 36°
A 30% chance of snow, mainly after noon.
Mostly cloudy with a high near 36.
Southwest wind 5 to 7 mph becoming
north northwest in the afternoon.
New snow accumulation of less than a half inch possible.
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Thursday Night
Snow Likely
Low: 22°
Snow likely, mainly before midnight.
Mostly cloudy with a low around 22.
North wind 5 to 8 mph.
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Friday
Chance Snow
High: 36°
A chance of snow, mainly before noon.
Partly sunny with a high near 36.
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Friday Night
Slight Chance Snow then Partly Cloudy
Low: 18°
A slight chance of snow before midnight.
Partly cloudy with a low around 18.
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Saturday
Mostly Sunny
High: 45°
Mostly sunny with a high near 45.
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Saturday Night
Partly Cloudy
Low: 24°
Partly cloudy with a low around 24.
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Sunday
Mostly Sunny
High: 52°
Mostly sunny with a high near 52.
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Source: National Weather Service
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