National Weather Service United States Department of Commerce

Much needed precipitation continues across the Southwest; central and eastern U.S. prepare for more winter weather

Widespread and much-needed precipitation across the Southwest will begin to spread into the Plains through Saturday. As the moisture encounters an Arctic airmass dropping down through the north-central U.S., moderate to heavy snow is expected to develop across the Midwest Saturday and then move into portions of the Mid-Atlantic and Northeast on Sunday.
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Current Conditions

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St Mary MT

7 Day Forecast

For More Weather Information:

Great Falls, MT Local Forecast Office

Today

Snow Chance for Measurable Precipitation 100%

Snow

High: 19 °FFalling Temperatures

Tonight

Mostly Cloudy

Mostly
Cloudy

Low: 17 °FRising Temperatures

Sunday

Chance Snow Chance for Measurable Precipitation 50%

Chance
Snow

High: 35 °F

Sunday
Night

Chance Snow Chance for Measurable Precipitation 50%

Chance
Snow

Low: 26 °F

Monday

Chance Snow Chance for Measurable Precipitation 40%

Chance
Snow

High: 37 °F

Monday
Night

Snow Likely Chance for Measurable Precipitation 60%

Snow
Likely

Low: 18 °F

Tuesday

Snow Likely Chance for Measurable Precipitation 60%

Snow
Likely

High: 22 °F

Tuesday
Night

Slight Chance Snow

Slight Chc
Snow

Low: 4 °F

Wednesday

Slight Chance Snow

Slight Chc
Snow

High: 30 °F

Detailed Forecast

  • Today Snow, mainly before 11am. Temperature falling to around 15 by 1pm. North wind 8 to 11 mph. Chance of precipitation is 100%. Total daytime snow accumulation of less than one inch possible.
  • Tonight Mostly cloudy, with a temperature rising to around 25 by 5am. Northeast wind 5 to 7 mph becoming light and variable.
  • Sunday A 50 percent chance of snow, mainly after 11am. Mostly cloudy, with a high near 35. Southwest wind 7 to 11 mph. New snow accumulation of less than a half inch possible.
  • Sunday Night A 50 percent chance of snow. Cloudy, with a low around 26. West wind 11 to 13 mph. New snow accumulation of less than one inch possible.
  • Monday A 40 percent chance of snow. Mostly cloudy, with a high near 37. West southwest wind 11 to 13 mph. New snow accumulation of less than one inch possible.
  • Monday Night Snow likely. Cloudy, with a low around 18. Chance of precipitation is 60%. New snow accumulation of 3 to 5 inches possible.
  • Tuesday Snow likely. Cloudy, with a high near 22. Chance of precipitation is 60%. New snow accumulation of 2 to 4 inches possible.
  • Tuesday Night A slight chance of snow. Partly cloudy, with a low around 4.
  • Wednesday A slight chance of snow. Mostly sunny, with a high near 30.
  • Wednesday Night A slight chance of snow. Mostly cloudy, with a low around 23.
  • Thursday A slight chance of snow. Partly sunny, with a high near 37. Breezy.
  • Thursday Night A slight chance of rain and snow. Mostly cloudy, with a low around 33. Breezy.
  • Friday A slight chance of rain. Mostly cloudy, with a high near 46. Breezy.