National Weather Service United States Department of Commerce

Severe weather possible for parts of central U.S.

Widespread thunderstorm activity is expected to develop on Thursday along a cold front moving eastward across the plains into the Mississippi Valley. A potential for damaging wind gusts will develop with the stronger thunderstorms. Hail will also be possible in the ArkLaTex and Ozarks.
Read More...

Current Conditions

En Español

Share |

Lewistown MT

7 Day Forecast

For More Weather Information:

Great Falls, MT Local Forecast Office

Overnight

Slight Chance Showers Chance for Measurable Precipitation 20%

Slight Chc
Showers

Low: 3 °C

Thursday

Rain/Snow Chance for Measurable Precipitation 90%

Rain/Snow

High: 6 °C

Thursday
Night

Mostly Clear

Mostly
Clear

Low: -3 °C

Friday

Mostly Sunny

Mostly
Sunny

High: 13 °C

Friday
Night

Partly Cloudy

Partly
Cloudy

Low: 4 °C

Saturday

Sunny

Sunny

High: 19 °C

Saturday
Night

Mostly Clear

Mostly
Clear

Low: 6 °C

Sunday

Sunny

Sunny

High: 19 °C

Sunday
Night

Partly Cloudy

Partly
Cloudy

Low: 6 °C

Detailed Forecast

  • Overnight A 20 percent chance of showers after midnight. Mostly clear early, then becoming mostly cloudy, with a low around 3. West southwest wind 13 to 16 km/h.
  • Thursday Rain and snow showers, mainly before noon. High near 6. Northwest wind 16 to 21 km/h increasing to 24 to 29 km/h in the afternoon. Winds could gust as high as 40 km/h. Chance of precipitation is 90%. New snow accumulation of 1 to 2 centimeters possible.
  • Thursday Night Mostly clear, with a low around -3. Northwest wind 11 to 21 km/h becoming southwest after midnight.
  • Friday Mostly sunny, with a high near 13. South southwest wind 8 to 13 km/h.
  • Friday Night Partly cloudy, with a low around 4. West southwest wind 8 to 13 km/h.
  • Saturday Sunny, with a high near 19.
  • Saturday Night Mostly clear, with a low around 6.
  • Sunday Sunny, with a high near 19.
  • Sunday Night Partly cloudy, with a low around 6.
  • Monday Mostly sunny, with a high near 20.
  • Monday Night Partly cloudy, with a low around 7.
  • Tuesday Mostly sunny, with a high near 19.
  • Tuesday Night Partly cloudy, with a low around 4.
  • Wednesday Mostly sunny, with a high near 14.