National Weather Service United States Department of Commerce

Wet weather continues across Pacific Northwest and New England

Two developing storm systems will continue to bring heavy rain to opposite coasts of the U.S. on Thursday. One system is affecting the Pacific Northwest and northern California while the other affects New England. There is a risk of flash flooding across parts of New England on Thursday where Flash Flood Watches are in effect.
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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

Overnight

Chance Showers Chance for Measurable Precipitation 30%

Chance
Showers

Low: 51 °F

Thursday

Chance Showers Chance for Measurable Precipitation 50%

Chance
Showers

High: 51 °FFalling Temperatures

Thursday
Night

Chance Showers Chance for Measurable Precipitation 40%

Chance
Showers

Low: 46 °FRising Temperatures

Friday

Slight Chance Showers Chance for Measurable Precipitation 20%

Slight Chc
Showers

High: 49 °F

Friday
Night

Chance Showers Chance for Measurable Precipitation 30%

Chance
Showers

Low: 37 °F

Saturday

Slight Chance Showers Chance for Measurable Precipitation 20%

Slight Chc
Showers

High: 54 °F

Saturday
Night

Chance Showers Chance for Measurable Precipitation 30%

Chance
Showers

Low: 40 °F

Sunday

Chance Showers

Chance
Showers

High: 46 °F

Sunday
Night

Chance Rain/Snow

Chance
Rain/Snow

Low: 35 °F

Detailed Forecast

  • Overnight A 30 percent chance of showers. Mostly cloudy, with a steady temperature around 51. Southwest wind 15 to 20 mph, with gusts as high as 28 mph.
  • Thursday A 50 percent chance of showers. Mostly cloudy, with a temperature falling to around 43 by noon. Breezy, with a southwest wind 22 to 24 mph, with gusts as high as 33 mph.
  • Thursday Night A 40 percent chance of showers. Mostly cloudy, with a temperature rising to around 51 by 8pm. Breezy, with a southwest wind 21 to 23 mph, with gusts as high as 32 mph.
  • Friday A 20 percent chance of showers. Mostly sunny, with a high near 49. West southwest wind around 15 mph, with gusts as high as 21 mph.
  • Friday Night A 30 percent chance of showers, mainly after midnight. Mostly cloudy, with a low around 37. South southwest wind 7 to 10 mph.
  • Saturday A 20 percent chance of showers. Partly sunny, with a high near 54.
  • Saturday Night A 30 percent chance of showers. Mostly cloudy, with a low around 40.
  • Sunday A chance of showers. Partly sunny, with a high near 46.
  • Sunday Night A chance of rain and snow showers. Mostly cloudy, with a low around 35.
  • Monday A slight chance of rain and snow showers. Partly sunny, with a high near 42.
  • Monday Night A slight chance of rain and snow showers. Mostly cloudy, with a low around 30.
  • Tuesday A slight chance of showers. Partly sunny, with a high near 45.
  • Tuesday Night A slight chance of showers. Mostly cloudy, with a low around 35.
  • Wednesday A slight chance of rain and snow showers. Partly sunny, with a high near 44.