National Weather Service United States Department of Commerce

Rain, thunderstorms possible for parts of Texas and Gulf Coast; additional rain and mountain snow forecast out West

A developing storm system will bring rain and thunderstorms across parts of South Texas and the western Gulf Coast on Thursday. Some of the thunderstorms that develop late Thursday night into Friday have the potential to be severe. Meanwhile, additional rainfall and mountain snow is forecast for northern California and the Pacific Northwest.
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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

This
Afternoon

Partly Sunny

Partly
Sunny

High: 41 °F

Tonight

Partly Cloudy

Partly
Cloudy

Low: 24 °F

Friday

Mostly Sunny

Mostly
Sunny

High: 43 °F

Friday
Night

Chance Rain/Snow Chance for Measurable Precipitation 30%

Chance
Rain/Snow

Low: 27 °F

Saturday

Mostly Sunny

Mostly
Sunny

High: 39 °F

Saturday
Night

Wintry Mix Chance for Measurable Precipitation 20%

Wintry
Mix

Low: 27 °F

Sunday

Chance Rain/Snow Chance for Measurable Precipitation 40%

Chance
Rain/Snow

High: 46 °F

Sunday
Night

Chance Rain/Snow

Chance
Rain/Snow

Low: 31 °F

Monday

Chance Rain

Chance
Rain

High: 42 °F

Detailed Forecast

  • This Afternoon Partly sunny, with a high near 41. West southwest wind around 9 mph.
  • Tonight Partly cloudy, with a low around 24. Southwest wind around 10 mph.
  • Friday Mostly sunny, with a high near 43. South southwest wind 5 to 8 mph.
  • Friday Night A chance of rain before 11pm, then a chance of rain and snow. Mostly cloudy, with a low around 27. West wind around 10 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
  • Saturday Mostly sunny, with a high near 39. West southwest wind around 9 mph.
  • Saturday Night A slight chance of rain, snow, and freezing rain after 11pm. Partly cloudy, with a low around 27. Chance of precipitation is 20%.
  • Sunday A chance of rain and snow before 11am, then a chance of rain. Partly sunny, with a high near 46. Breezy. Chance of precipitation is 40%. Little or no snow accumulation expected.
  • Sunday Night A chance of rain and snow. Mostly cloudy, with a low around 31.
  • Monday A chance of rain. Mostly cloudy, with a high near 42.
  • Monday Night A slight chance of snow. Mostly cloudy, with a low around 23.
  • Tuesday A slight chance of rain and snow. Partly sunny, with a high near 36.
  • Tuesday Night A chance of snow. Mostly cloudy, with a low around 17.
  • Wednesday A chance of snow. Mostly cloudy, with a high near 30.