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.
Read More...

Current Conditions

En Español

Share |

Great Falls International Airport MT

7 Day Forecast

For More Weather Information:

Great Falls, MT Local Forecast Office

Overnight

Slight Chance Rain/Snow Chance for Measurable Precipitation 20%

Slight Chc
Rain/Snow

Low: 32 °F

Sunday

Chance Rain Chance for Measurable Precipitation 50%

Chance
Rain

High: 49 °F

Sunday
Night

Chance Rain/Snow Chance for Measurable Precipitation 30%

Chance
Rain/Snow

Low: 30 °F

Monday

Chance Rain/Snow Chance for Measurable Precipitation 30%

Chance
Rain/Snow

High: 39 °F

Monday
Night

Partly Cloudy

Partly
Cloudy

Low: 22 °F

Tuesday

Mostly Sunny

Mostly
Sunny

High: 39 °F

Tuesday
Night

Chance Snow Chance for Measurable Precipitation 30%

Chance
Snow

Low: 29 °F

Wednesday

Chance Snow

Chance
Snow

High: 40 °F

Wednesday
Night

Snow Likely

Snow
Likely

Low: 19 °F

Detailed Forecast

  • Overnight A slight chance of rain and snow. Mostly cloudy, with a low around 32. South southwest wind around 20 mph, with gusts as high as 28 mph. Chance of precipitation is 20%.
  • Sunday A 50 percent chance of rain. Partly sunny, with a high near 49. Breezy, with a west southwest wind 18 to 25 mph, with gusts as high as 36 mph.
  • Sunday Night A chance of rain before 11pm, then a chance of snow. Mostly cloudy, with a low around 30. West wind 15 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
  • Monday A chance of snow before 11am, then a chance of rain and snow. Partly sunny, with a high near 39. Breezy, with a west wind around 22 mph, with gusts as high as 30 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
  • Monday Night Partly cloudy, with a low around 22. West southwest wind around 15 mph, with gusts as high as 21 mph.
  • Tuesday Mostly sunny, with a high near 39.
  • Tuesday Night A 30 percent chance of snow. Mostly cloudy, with a low around 29. New snow accumulation of less than a half inch possible.
  • Wednesday A chance of snow. Mostly cloudy, with a high near 40.
  • Wednesday Night Snow likely. Cloudy, with a low around 19.
  • Christmas Day Snow likely. Cloudy, with a high near 27.
  • Thursday Night A slight chance of snow. Mostly cloudy, with a low around 10.
  • Friday A slight chance of snow. Partly sunny, with a high near 24.
  • Friday Night Mostly cloudy, with a low around 12.
  • Saturday A slight chance of snow. Partly sunny, with a high near 25.