National Weather Service United States Department of Commerce

Heavy lake-effect snow continues across lower Great Lakes

Another round of heavy lake-effect snow is forecast for the Great Lakes through mid-day Friday. An additional 30 inches or more could fall in some locations, on top of the impressive amounts that have fallen already. This will result in very difficult or nearly impossible travel at times in the heaviest snow bands. The snow should taper off during the morning on Friday.
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Current Conditions

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4 Miles SW Helena MT

7 Day Forecast

For More Weather Information:

Great Falls, MT Local Forecast Office

Overnight

Partly Cloudy

Partly
Cloudy

Low: 32 °F

Friday

Mostly Sunny

Mostly
Sunny

High: 43 °F

Friday
Night

Slight Chance Snow Chance for Measurable Precipitation 20%

Slight Chc
Snow

Low: 33 °F

Saturday

Chance Rain/Snow Chance for Measurable Precipitation 50%

Chance
Rain/Snow

High: 43 °F

Saturday
Night

Slight Chance Snow Chance for Measurable Precipitation 20%

Slight Chc
Snow

Low: 26 °F

Sunday

Slight Chance Snow Chance for Measurable Precipitation 20%

Slight Chc
Snow

High: 35 °F

Sunday
Night

Chance Snow Chance for Measurable Precipitation 40%

Chance
Snow

Low: 22 °F

Monday

Slight Chance Snow

Slight Chc
Snow

High: 32 °F

Monday
Night

Slight Chance Snow

Slight Chc
Snow

Low: 21 °F

Detailed Forecast

  • Overnight Partly cloudy, with a steady temperature around 32. West southwest wind around 6 mph.
  • Friday Mostly sunny, with a high near 43. Southwest wind 3 to 6 mph.
  • Friday Night A 20 percent chance of snow after 11pm. Mostly cloudy, with a steady temperature around 33. South southwest wind around 9 mph.
  • Saturday A chance of snow before 11am, then a chance of rain and snow. Mostly cloudy, with a high near 43. Breezy, with a west wind 9 to 14 mph increasing to 21 to 26 mph in the afternoon. Winds could gust as high as 37 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
  • Saturday Night A 20 percent chance of snow. Partly cloudy, with a low around 26. West wind 11 to 16 mph, with gusts as high as 23 mph.
  • Sunday A 20 percent chance of snow. Partly sunny, with a high near 35.
  • Sunday Night A 40 percent chance of snow showers. Mostly cloudy, with a low around 22. New snow accumulation of less than a half inch possible.
  • Monday A slight chance of snow showers. Partly sunny, with a high near 32.
  • Monday Night A slight chance of snow. Mostly cloudy, with a low around 21.
  • Tuesday A chance of snow. Mostly cloudy, with a high near 32.
  • Tuesday Night A chance of snow. Mostly cloudy, with a low around 22.
  • Wednesday A chance of snow. Mostly cloudy, with a high near 31.
  • Wednesday Night A chance of snow. Mostly cloudy, with a low around 14.
  • Thanksgiving Day A slight chance of snow showers. Partly sunny, with a high near 25.