National Weather Service United States Department of Commerce

Severe weather will continue overnight across much of the eastern U.S. and be possible again on Monday from the Gulf Coast to the coastal Carolinas.

The severe weather threat will continue into the overnight hours for a large portion of the eastern U.S. from the Ohio Valley to the Mid-Atlantic and Northeast. On Monday, the severe weather threat area will cover a narrow swath along a sharply defined cold front from the Gulf Coast through the Southeast and up to the coastal Carolinas during the afternoon and evening.
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Current Conditions

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Lewistown MT

7 Day Forecast

For More Weather Information:

Great Falls, MT Local Forecast Office

Overnight

Mostly Clear

Mostly
Clear

Low: 11 °C

Monday

Partly Sunny

Partly
Sunny

High: 31 °C

Monday
Night

Partly Cloudy

Partly
Cloudy

Low: 12 °C

Tuesday

Sunny

Sunny

High: 31 °C

Tuesday
Night

Mostly Clear

Mostly
Clear

Low: 13 °C

Wednesday

Sunny

Sunny

High: 31 °C

Wednesday
Night

Mostly Clear

Mostly
Clear

Low: 13 °C

Thursday

Sunny

Sunny

High: 30 °C

Thursday
Night

Mostly Clear

Mostly
Clear

Low: 12 °C

Detailed Forecast

  • Overnight Mostly clear, with a low around 11. Southeast wind 11 to 13 km/h.
  • Monday Partly sunny, with a high near 31. Southeast wind 11 to 16 km/h.
  • Monday Night Partly cloudy, with a low around 12. East southeast wind 11 to 14 km/h.
  • Tuesday Sunny, with a high near 31. East southeast wind 10 to 13 km/h.
  • Tuesday Night Mostly clear, with a low around 13. East southeast wind 16 to 18 km/h.
  • Wednesday Sunny, with a high near 31.
  • Wednesday Night Mostly clear, with a low around 13.
  • Thursday Sunny, with a high near 30.
  • Thursday Night Mostly clear, with a low around 12.
  • Friday Sunny, with a high near 29.
  • Friday Night Partly cloudy, with a low around 12.
  • Saturday Mostly sunny, with a high near 30.
  • Saturday Night Partly cloudy, with a low around 13.
  • Sunday A slight chance of showers and thunderstorms. Mostly sunny, with a high near 29.