National Weather Service United States Department of Commerce

Heavy rain and mountain snow across the northwestern U.S. this weekend

A Pacific storm system will continue to impact the West Coast through Sunday. Heavy rainfall could lead to flash flooding, river and small stream flooding, as well as mudslides and debris flows, especially over burn scars. At higher elevations, strong winds and heavy snowfall, with accumulations of 1 to 3 feet, could result in hazardous travel through mountain passes.
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Current Conditions

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11 Miles NNE Helena MT

7 Day Forecast

For More Weather Information:

Great Falls, MT Local Forecast Office

Late
Afternoon

Slight Chance Snow Chance for Measurable Precipitation 20%

Slight Chc
Snow

High: 31 °F

Tonight

Chance Snow Chance for Measurable Precipitation 50%

Chance
Snow

Low: 28 °F

Sunday

Rain/Snow Likely Chance for Measurable Precipitation 70%

Rain/Snow
Likely

High: 44 °F

Sunday
Night

Chance Rain/Snow Chance for Measurable Precipitation 30%

Chance
Rain/Snow

Low: 28 °F

Monday

Chance Snow Chance for Measurable Precipitation 30%

Chance
Snow

High: 36 °F

Monday
Night

Partly Cloudy

Partly
Cloudy

Low: 17 °F

Tuesday

Partly Sunny

Partly
Sunny

High: 33 °F

Tuesday
Night

Chance Snow

Chance
Snow

Low: 24 °F

Wednesday

Snow Likely

Snow
Likely

High: 36 °F

Detailed Forecast

  • Late Afternoon A 20 percent chance of snow. Mostly cloudy, with a steady temperature around 31. South wind around 5 mph.
  • Tonight A chance of snow, mainly after 11pm. Mostly cloudy, with a low around 28. South southeast wind around 6 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
  • Sunday Rain likely, possibly mixed with snow, mainly before 11am. Mostly cloudy, with a high near 44. South wind 5 to 15 mph becoming west in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
  • Sunday Night A chance of rain before 11pm, then a chance of rain and snow. Mostly cloudy, with a low around 28. West wind 10 to 17 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
  • Monday A 30 percent chance of snow. Partly sunny, with a high near 36. West wind around 11 mph. New snow accumulation of less than a half inch possible.
  • Monday Night Partly cloudy, with a low around 17.
  • Tuesday Partly sunny, with a high near 33.
  • Tuesday Night A chance of snow. Mostly cloudy, with a low around 24.
  • Wednesday Snow likely. Mostly cloudy, with a high near 36.
  • Wednesday Night Snow likely. Cloudy, with a low around 18.
  • Christmas Day Snow likely. Mostly cloudy, with a high near 25.
  • Thursday Night A chance of snow. Mostly cloudy, with a low around 8.
  • Friday A slight chance of snow. Partly sunny, with a high near 22.
  • Friday Night A slight chance of snow. Mostly cloudy, with a low around 10.
  • Saturday A slight chance of snow. Mostly cloudy, with a high near 25.