National Weather Service United States Department of Commerce

Snow Will Continue Across the Plains and Mountains of the Northwest

Two cold fronts will continue to bring snow to the northern Plains and portions of the Rocky Mountain states and the interior Northwest Saturday. Heavy rain is possible across the central Gulf Coast as one front draws moisture off the Gulf of Mexico. Strong thunderstorms are also possible along the Texas and Louisiana Gulf Coast.
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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

Today

Mostly Cloudy

Mostly
Cloudy

High: -1 °C

Tonight

Snow Chance for Measurable Precipitation 90%

Snow

Low: -9 °C

Sunday

Snow Chance for Measurable Precipitation 100%

Snow

High: -5 °C

Sunday
Night

Snow Likely Chance for Measurable Precipitation 60%

Snow
Likely

Low: -21 °C

Monday

Slight Chance Snow Chance for Measurable Precipitation 20%

Slight Chc
Snow

High: -17 °C

Monday
Night

Slight Chance Snow Chance for Measurable Precipitation 20%

Slight Chc
Snow

Low: -27 °C

Tuesday

Cold

Cold

High: -14 °C

Tuesday
Night

Partly Cloudy

Partly
Cloudy

Low: -17 °C

Wednesday

Mostly Sunny

Mostly
Sunny

High: -2 °C

Detailed Forecast

  • Today Mostly cloudy, with a high near -1. West wind 14 to 24 km/h, with gusts as high as 32 km/h.
  • Tonight Snow, mainly after 11pm. Low around -9. Southwest wind around 16 km/h. Chance of precipitation is 90%. New snow accumulation of 1 to 3 centimeters possible.
  • Sunday Snow. High near -5. Wind chill values as low as -18. West northwest wind 10 to 18 km/h becoming north northeast in the morning. Chance of precipitation is 100%. New snow accumulation of 3 to 5 centimeters possible.
  • Sunday Night Snow likely, mainly before 11pm. Cloudy, with a low around -21. Wind chill values as low as -29. North wind 14 to 18 km/h. Chance of precipitation is 60%. New snow accumulation of 2 to 4 centimeters possible.
  • Monday A 20 percent chance of snow showers before 11am. Mostly cloudy and cold, with a high near -17. Northwest wind around 11 km/h.
  • Monday Night A 20 percent chance of snow showers before 11pm. Mostly cloudy, with a low around -27.
  • Tuesday Mostly sunny and cold, with a high near -14.
  • Tuesday Night Partly cloudy, with a low around -17.
  • Wednesday Mostly sunny, with a high near -2.
  • Wednesday Night Partly cloudy, with a low around -10.
  • New Year's Day Mostly sunny, with a high near -1.
  • Thursday Night A chance of snow. Mostly cloudy, with a low around -11.
  • Friday A chance of snow. Partly sunny, with a high near -6.