National Weather Service United States Department of Commerce

East Coast winter storm forecast to impact Thanksgiving holiday travel

A storm system will develop off the coast of the Carolinas early Wednesday and strengthen as it moves rapidly up the East Coast Wednesday into early Thursday. Heavy snow is likely to begin in the central Appalachians early Wednesday morning, spreading northeast through the interior Mid-Atlantic into New England by Wednesday night. Winter Storm Watches are in effect for these areas.
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Current Conditions

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Lewistown MT

7 Day Forecast

For More Weather Information:

Great Falls, MT Local Forecast Office

Tonight

Chance Snow Chance for Measurable Precipitation 40%

Chance
Snow

Low: 28 °FRising Temperatures

Tuesday

Chance Snow Chance for Measurable Precipitation 50%

Chance
Snow

High: 36 °F

Tuesday
Night

Snow Chance for Measurable Precipitation 80%

Snow

Low: 22 °F

Wednesday

Snow Chance for Measurable Precipitation 100%

Snow

High: 33 °F

Wednesday
Night

Chance Rain/Snow Chance for Measurable Precipitation 40%

Chance
Rain/Snow

Low: 20 °F

Thanksgiving
Day

Slight Chance Rain/Snow Chance for Measurable Precipitation 20%

Slight Chc
Rain/Snow

High: 44 °F

Thursday
Night

Partly Cloudy

Partly
Cloudy

Low: 29 °F

Friday

Chance Rain

Chance
Rain

High: 37 °F

Friday
Night

Chance Snow

Chance
Snow

Low: 0 °F

Detailed Forecast

  • Tonight A 40 percent chance of snow after 11pm. Cloudy, with a temperature rising to around 35 by 4am. West southwest wind 11 to 15 mph, with gusts as high as 21 mph. Total nighttime snow accumulation of less than a half inch possible.
  • Tuesday A 50 percent chance of snow. Cloudy, with a high near 36. Northwest wind 16 to 18 mph, with gusts as high as 26 mph. New snow accumulation of 1 to 2 inches possible.
  • Tuesday Night Snow. Low around 22. Northwest wind 13 to 18 mph becoming light and variable after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.
  • Wednesday Snow. High near 33. South wind 6 to 8 mph becoming east southeast in the morning. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.
  • Wednesday Night A chance of snow before 11pm, then a chance of rain and snow. Mostly cloudy, with a low around 20. West southwest wind 5 to 7 mph. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.
  • Thanksgiving Day A slight chance of rain and snow showers. Mostly cloudy, with a high near 44. Chance of precipitation is 20%.
  • Thursday Night Partly cloudy, with a low around 29.
  • Friday A chance of rain showers. Mostly sunny, with a high near 37.
  • Friday Night A chance of snow. Mostly cloudy, with a low around 0.
  • Saturday A chance of snow. Mostly cloudy and cold, with a high near 0.
  • Saturday Night A slight chance of snow. Partly cloudy, with a low around -7.
  • Sunday Mostly sunny, with a high near 19.
  • Sunday Night A slight chance of snow. Mostly cloudy, with a low around 6.
  • Monday A slight chance of snow. Partly sunny, with a high near 25.