National Weather Service United States Department of Commerce

Significant threat for flash flooding continues across the southwestern U.S.; river flooding is also possible

Heavy precipitation continues to be forecast for much of the Southwest U.S. due to the remnants of Odile. The heaviest rainfall will be concentrated across southern Arizona, southern New Mexico and western Texas where 3 to 6 inches could fall through Friday, with some locales receiving up to 9 inches. Flash flooding, as well as river flooding, will be a risk for many locations in this region.
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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

Partly Cloudy

Partly
Cloudy

Low: 54 °F

Thursday

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

High: 82 °F

Thursday
Night

Chance Thunderstorms Chance for Measurable Precipitation 30%

Chance
Thunderstorms

Low: 51 °F

Friday

Mostly Sunny

Mostly
Sunny

High: 74 °F

Friday
Night

Partly Cloudy

Partly
Cloudy

Low: 46 °F

Saturday

Sunny

Sunny

High: 70 °F

Saturday
Night

Mostly Clear

Mostly
Clear

Low: 44 °F

Sunday

Sunny

Sunny

High: 71 °F

Sunday
Night

Mostly Clear

Mostly
Clear

Low: 45 °F

Detailed Forecast

  • Overnight Partly cloudy, with a low around 54. South southeast wind around 7 mph.
  • Thursday A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 82. South southeast wind 6 to 10 mph becoming west in the afternoon.
  • Thursday Night A 30 percent chance of showers and thunderstorms, mainly before midnight. Mostly cloudy, with a low around 51. West southwest wind 6 to 9 mph.
  • Friday Mostly sunny, with a high near 74. West northwest wind 9 to 14 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 28 mph.
  • Friday Night Partly cloudy, with a low around 46. West wind 7 to 11 mph.
  • Saturday Sunny, with a high near 70.
  • Saturday Night Mostly clear, with a low around 44.
  • Sunday Sunny, with a high near 71.
  • Sunday Night Mostly clear, with a low around 45.
  • Monday Sunny, with a high near 75.
  • Monday Night Mostly clear, with a low around 48.
  • Tuesday Sunny, with a high near 75.
  • Tuesday Night Mostly clear, with a low around 47.
  • Wednesday Mostly sunny, with a high near 77.