National Weather Service United States Department of Commerce

Arctic air to drop temperatures across the northern Plain and northern Rockies; will bring snow to the Intermountain West

An arctic front is forecast to plunge through the northern Plains and northern Rockies on Saturday bringing a drastic drop in temperatures across these areas with a burst of snow over much of the Intermountain Region. Arctic air will also filter into the Pacific Northwest bringing with it snow showers and subfreezing low temperatures.
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Current Conditions

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Great Falls MT

7 Day Forecast

For More Weather Information:

Great Falls, MT Local Forecast Office

Overnight

Snow Chance for Measurable Precipitation 100%

Snow

Low: -18 °C

Saturday

Snow Chance for Measurable Precipitation 100%

Snow

High: -17 °CFalling Temperatures

Saturday
Night

Slight Chance Snow Chance for Measurable Precipitation 20%

Slight Chc
Snow

Low: -23 °C

Sunday

Sunny

Sunny

High: -10 °C

Sunday
Night

Partly Cloudy

Partly
Cloudy

Low: -15 °C

Monday

Mostly Sunny

Mostly
Sunny

High: 2 °C

Monday
Night

Slight Chance Snow Chance for Measurable Precipitation 20%

Slight Chc
Snow

Low: -7 °C

Tuesday

Partly Sunny

Partly
Sunny

High: 0 °C

Tuesday
Night

Mostly Cloudy

Mostly
Cloudy

Low: -9 °C

Detailed Forecast

  • Overnight Snow. Low around -18. Wind chill values as low as -28. North northwest wind around 24 km/h, with gusts as high as 32 km/h. Chance of precipitation is 100%. Total nighttime snow accumulation of 1 to 2 centimeters possible.
  • Saturday Snow. Temperature falling to around -21 by 5pm. Wind chill values as low as -30. North northwest wind 21 to 26 km/h decreasing to 14 to 19 km/h in the morning. Winds could gust as high as 37 km/h. Chance of precipitation is 100%. New snow accumulation of 2 to 4 centimeters possible.
  • Saturday Night A 20 percent chance of snow before midnight. Mostly cloudy, with a low around -23. Wind chill values as low as -32. North northwest wind 10 to 16 km/h becoming southwest after midnight.
  • Sunday Sunny, with a high near -10. Wind chill values as low as -22. Southwest wind 8 to 11 km/h.
  • Sunday Night Partly cloudy, with a low around -15. South wind 13 to 16 km/h.
  • Monday Mostly sunny, with a high near 2.
  • Monday Night A 20 percent chance of snow. Mostly cloudy, with a low around -7.
  • Tuesday Partly sunny, with a high near 0.
  • Tuesday Night Mostly cloudy, with a low around -9.
  • Wednesday Mostly sunny, with a high near 0.
  • Wednesday Night Partly cloudy, with a low around -5.
  • Thursday Mostly sunny, with a high near 4.
  • Thursday Night Mostly cloudy, with a low around -2.
  • Friday Partly sunny, with a high near 4.