National Weather Service United States Department of Commerce

Severe weather possible for parts of eastern U.S.

The NWS Storm Prediction Center is forecasting a risk of severe thunderstorms Tuesday afternoon & evening across parts of the Ohio Valley, Appalachians & eastern Great Lakes, from eastern Kentucky northeastward to central New York. The main threat will be strong, damaging wind gusts. Isolated strong to severe storms will also be possible across parts of the southern Plains & lower Miss. Valley.
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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

Today

Mostly Sunny

Mostly
Sunny

High: 23 °C

Tonight

Mostly Clear

Mostly
Clear

Low: 9 °C

Wednesday

Chance Showers Chance for Measurable Precipitation 30%

Chance
Showers

High: 18 °C

Wednesday
Night

Slight Chance Showers Chance for Measurable Precipitation 20%

Slight Chc
Showers

Low: 6 °C

Thursday

Mostly Sunny

Mostly
Sunny

High: 16 °C

Thursday
Night

Partly Cloudy

Partly
Cloudy

Low: 6 °C

Friday

Sunny

Sunny

High: 21 °C

Friday
Night

Partly Cloudy

Partly
Cloudy

Low: 8 °C

Saturday

Mostly Sunny

Mostly
Sunny

High: 22 °C

Detailed Forecast

  • Today Mostly sunny, with a high near 23. West wind 11 to 16 km/h.
  • Tonight Mostly clear, with a low around 9. Northwest wind 5 to 13 km/h becoming east southeast in the evening.
  • Wednesday A slight chance of showers, then a chance of showers and thunderstorms after noon. Mostly sunny, with a high near 18. Breezy, with a west northwest wind 13 to 23 km/h increasing to 25 to 35 km/h in the afternoon. Winds could gust as high as 50 km/h. Chance of precipitation is 30%.
  • Wednesday Night A 20 percent chance of showers. Partly cloudy, with a low around 6. Breezy, with a west northwest wind 30 to 35 km/h decreasing to 18 to 23 km/h after midnight. Winds could gust as high as 50 km/h.
  • Thursday Mostly sunny, with a high near 16. West northwest wind 11 to 16 km/h.
  • Thursday Night Partly cloudy, with a low around 6.
  • Friday Sunny, with a high near 21.
  • Friday Night Partly cloudy, with a low around 8.
  • Saturday Mostly sunny, with a high near 22.
  • Saturday Night Partly cloudy, with a low around 9.
  • Sunday Mostly sunny, with a high near 24.
  • Sunday Night Partly cloudy, with a low around 9.
  • Monday A slight chance of showers and thunderstorms. Mostly sunny, with a high near 22.