National Weather Service United States Department of Commerce

Severe weather possible across parts of Northeast, Ozarks, Intermountain West to northern Rockies

The NWS Storm Prediction Center is forecasting a risk of severe thunderstorms Wednesday afternoon and evening for three separate areas across the U.S. One area covers parts of the Northeast and New England. Another area is across parts of the Ozarks. The third area stretches across parts of the Intermountain West, northern Rookies and northern Plains.
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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

Late
Afternoon

Severe Thunderstorms Chance for Measurable Precipitation 90%

Severe
Thunderstorms

High: 81 °F

Tonight

Severe Thunderstorms Chance for Measurable Precipitation 80%

Severe
Thunderstorms

Low: 50 °F

Thursday

Chance Thunderstorms Chance for Measurable Precipitation 40%

Chance
Thunderstorms

High: 57 °FFalling Temperatures

Thursday
Night

Slight Chance Showers Chance for Measurable Precipitation 20%

Slight Chc
Showers

Low: 43 °F

Friday

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

High: 64 °F

Friday
Night

Mostly Clear

Mostly
Clear

Low: 43 °F

Saturday

Sunny

Sunny

High: 72 °F

Saturday
Night

Mostly Clear

Mostly
Clear

Low: 44 °F

Sunday

Sunny

Sunny

High: 79 °F

Detailed Forecast

  • Late Afternoon Showers and thunderstorms. Some storms could be severe, with large hail and damaging winds. High near 81. South southeast wind around 9 mph. Chance of precipitation is 90%.
  • Tonight Showers and thunderstorms. Some storms could be severe, with large hail and damaging winds. Low around 50. South wind 8 to 17 mph becoming west southwest after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
  • Thursday A chance of showers, with thunderstorms also possible after noon. Partly sunny, with a temperature falling to around 46 by 4pm. Windy, with a west southwest wind 24 to 29 mph increasing to 33 to 38 mph in the afternoon. Winds could gust as high as 55 mph. Chance of precipitation is 40%.
  • Thursday Night A 20 percent chance of showers before midnight. Partly cloudy, with a low around 43. Windy, with a west southwest wind 32 to 37 mph decreasing to 23 to 28 mph after midnight. Winds could gust as high as 55 mph.
  • Friday A 20 percent chance of showers and thunderstorms before noon. Sunny, with a high near 64. West southwest wind 18 to 20 mph, with gusts as high as 28 mph.
  • Friday Night Mostly clear, with a low around 43.
  • Saturday Sunny, with a high near 72.
  • Saturday Night Mostly clear, with a low around 44.
  • Sunday Sunny, with a high near 79.
  • Sunday Night Mostly clear, with a low around 48.
  • Monday Mostly sunny, with a high near 84.
  • Monday Night Mostly clear, with a low around 49.
  • Tuesday Sunny, with a high near 83.
  • Tuesday Night Mostly clear, with a low around 49.
  • Wednesday Sunny, with a high near 82.