National Weather Service United States Department of Commerce

Severe weather possible for parts of northern Plains and mid/upper Mississippi River Valley

Severe thunderstorms are expected across portions of the northern Plains and upper Mississippi Valley Wednesday. Large hail and damaging winds will be the main threats with these storms, but a tornado or two could occur as well. Other strong to severe storms may occur from late afternoon into the overnight hours from the middle Mississippi Valley into the lower Ohio Valley.
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Current Conditions

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4 Miles SW Helena MT

7 Day Forecast

For More Weather Information:

Great Falls, MT Local Forecast Office

Overnight

Isolated Thunderstorms Chance for Measurable Precipitation 20%

Isolated
Thunderstorms

Low: 54 °F

Wednesday

Chance Thunderstorms Chance for Measurable Precipitation 40%

Chance
Thunderstorms

High: 76 °F

Wednesday
Night

Chance Showers Chance for Measurable Precipitation 50%

Chance
Showers

Low: 50 °F

Thursday

Showers Chance for Measurable Precipitation 80%

Showers

High: 63 °F

Thursday
Night

Showers Likely Chance for Measurable Precipitation 60%

Showers
Likely

Low: 48 °F

Friday

Showers Likely Chance for Measurable Precipitation 60%

Showers
Likely

High: 63 °F

Friday
Night

Rain Likely Chance for Measurable Precipitation 60%

Rain
Likely

Low: 45 °F

Saturday

Rain Likely

Rain
Likely

High: 58 °F

Saturday
Night

Chance Showers

Chance
Showers

Low: 43 °F

Detailed Forecast

  • Overnight Isolated showers and thunderstorms before midnight. Mostly cloudy, with a low around 54. West northwest wind around 6 mph becoming calm after midnight. Chance of precipitation is 20%.
  • Wednesday A 40 percent chance of showers and thunderstorms, mainly after noon. Partly sunny, with a high near 76. Southwest wind 6 to 8 mph.
  • Wednesday Night A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 50. Northwest wind 6 to 9 mph.
  • Thursday A chance of showers and thunderstorms, then showers and possibly a thunderstorm after noon. High near 63. North wind 6 to 10 mph. Chance of precipitation is 80%.
  • Thursday Night Showers likely and possibly a thunderstorm before midnight, then a chance of showers. Mostly cloudy, with a low around 48. North wind 7 to 10 mph. Chance of precipitation is 60%.
  • Friday A chance of showers, then showers likely and possibly a thunderstorm after noon. Mostly cloudy, with a high near 63. Chance of precipitation is 60%.
  • Friday Night Showers likely and possibly a thunderstorm before midnight, then rain likely after midnight. Mostly cloudy, with a low around 45. Chance of precipitation is 60%.
  • Saturday Rain and thunderstorms likely. Partly sunny, with a high near 58.
  • Saturday Night A chance of showers and thunderstorms. Mostly cloudy, with a low around 43.
  • Sunday A chance of showers. Partly sunny, with a high near 66.
  • Sunday Night A chance of showers. Mostly cloudy, with a low around 46.
  • Monday A chance of showers and thunderstorms. Partly sunny, with a high near 69.
  • Monday Night A chance of showers and thunderstorms. Mostly cloudy, with a low around 46.
  • Tuesday A chance of showers and thunderstorms. Mostly sunny, with a high near 67.