National Weather Service United States Department of Commerce

Wet and stormy weather continues across Pacific Northwest

Most of the country will experience tranquil weather this weekend. The exception will be the Pacific Northwest and northern California where a series of storm systems will bring rain, strong winds and thunderstorms through Saturday.
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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

Sunny

Sunny

High: 21 °C

Tonight

Partly Cloudy

Partly
Cloudy

Low: 6 °C

Sunday

Slight Chance Showers Chance for Measurable Precipitation 20%

Slight Chc
Showers

High: 13 °C

Sunday
Night

Chance Rain/Snow Chance for Measurable Precipitation 30%

Chance
Rain/Snow

Low: 1 °C

Monday

Chance Rain/Snow Chance for Measurable Precipitation 40%

Chance
Rain/Snow

High: 7 °C

Monday
Night

Partly Cloudy

Partly
Cloudy

Low: -3 °C

Tuesday

Mostly Sunny

Mostly
Sunny

High: 12 °C

Tuesday
Night

Mostly Cloudy

Mostly
Cloudy

Low: 3 °C

Wednesday

Partly Sunny

Partly
Sunny

High: 13 °C

Detailed Forecast

  • Today Sunny, with a high near 21. East southeast wind 11 to 14 km/h.
  • Tonight Partly cloudy, with a low around 6. South wind 14 to 16 km/h.
  • Sunday A 20 percent chance of showers after noon. Mostly sunny, with a high near 13. West wind 14 to 19 km/h increasing to 22 to 27 km/h in the afternoon. Winds could gust as high as 39 km/h.
  • Sunday Night A slight chance of rain showers before midnight, then a chance of rain and snow showers. Mostly cloudy, with a low around 1. West wind 21 to 24 km/h, with gusts as high as 34 km/h. Chance of precipitation is 30%. Little or no snow accumulation expected.
  • Monday A chance of rain and snow showers before noon, then a slight chance of rain showers. Mostly cloudy, with a high near 7. West northwest wind 24 to 26 km/h, with gusts as high as 37 km/h. Chance of precipitation is 40%. Little or no snow accumulation expected.
  • Monday Night Partly cloudy, with a low around -3.
  • Tuesday Mostly sunny, with a high near 12.
  • Tuesday Night Mostly cloudy, with a low around 3.
  • Wednesday Partly sunny, with a high near 13.
  • Wednesday Night Mostly cloudy, with a low around 1.
  • Thursday Partly sunny, with a high near 13.
  • Thursday Night Partly cloudy, with a low around 1.
  • Friday Mostly sunny, with a high near 18.