National Weather Service United States Department of Commerce

A stalled frontal boundary and ample monsoonal moisture will lead to flash flood potential from the Great Basin to the Great Plains tonight and Tuesday

A stalled frontal boundary will set up along the southern and central Rockies for the next couple of days providing focus for showers and thunderstorms. In addition, ample monsoonal moisture will stream in across the southwest bringing enough moisture to introduce a flash flood threat from the Great Basin and Southwest eastward across the central and southern Rockies into the adjacent Plains.
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Current Conditions

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6 Miles WNW Big Sky MT

7 Day Forecast

For More Weather Information:

Great Falls, MT Local Forecast Office

Today

Scattered Thunderstorms Chance for Measurable Precipitation 30%

Scattered
Thunderstorms

High: 65 °F

Tonight

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

Low: 47 °F

Wednesday

Chance Thunderstorms Chance for Measurable Precipitation 40%

Chance
Thunderstorms

High: 64 °F

Wednesday
Night

Chance Thunderstorms Chance for Measurable Precipitation 30%

Chance
Thunderstorms

Low: 49 °F

Thursday

Chance Thunderstorms Chance for Measurable Precipitation 40%

Chance
Thunderstorms

High: 63 °F

Thursday
Night

Chance Showers Chance for Measurable Precipitation 40%

Chance
Showers

Low: 48 °F

Friday

Chance Thunderstorms Chance for Measurable Precipitation 50%

Chance
Thunderstorms

High: 62 °F

Friday
Night

Chance Thunderstorms

Chance
Thunderstorms

Low: 46 °F

Saturday

Chance Thunderstorms

Chance
Thunderstorms

High: 61 °F

Detailed Forecast

  • Today Scattered showers and thunderstorms. Mostly sunny, with a high near 65. Light and variable wind becoming northeast 6 to 11 mph in the morning. Chance of precipitation is 30%.
  • Tonight A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 47. East northeast wind 6 to 10 mph becoming south southeast after midnight.
  • Wednesday A 40 percent chance of showers and thunderstorms, mainly after noon. Mostly sunny, with a high near 64. South southeast wind around 5 mph becoming calm.
  • Wednesday Night A 30 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 49. East northeast wind around 5 mph becoming calm after midnight.
  • Thursday A 40 percent chance of showers and thunderstorms, mainly after noon. Partly sunny, with a high near 63. Calm wind.
  • Thursday Night A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 48.
  • Friday A 50 percent chance of showers and thunderstorms. Mostly sunny, with a high near 62.
  • Friday Night A chance of showers and thunderstorms. Partly cloudy, with a low around 46.
  • Saturday A chance of showers and thunderstorms. Mostly sunny, with a high near 61.
  • Saturday Night A chance of showers and thunderstorms. Partly cloudy, with a low around 46.
  • Sunday A chance of showers and thunderstorms. Mostly sunny, with a high near 63.
  • Sunday Night A chance of showers and thunderstorms. Partly cloudy, with a low around 47.
  • Monday A chance of showers and thunderstorms. Mostly sunny, with a high near 62.