National Weather Service United States Department of Commerce

Significant threat for flash floods in the Southwest U.S. this week

Heavy precipitation is expected over portions of the Southwest U.S. this week due to the remnants of weakening Tropical Storm Odile. The heavy rainfall will be concentrated across southern Arizona, southern New Mexico and western Texas where 3 to 6 inches could fall by Thursday, with some locales receiving up to 9 inches. Flash Flood Watches are in effect for much of this area.
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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

Tonight

Partly Cloudy

Partly
Cloudy

Low: 49 °F

Wednesday

Mostly Sunny

Mostly
Sunny

High: 83 °F

Wednesday
Night

Partly Cloudy

Partly
Cloudy

Low: 53 °F

Thursday

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

High: 83 °F

Thursday
Night

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

Low: 50 °F

Friday

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

High: 74 °F

Friday
Night

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

Low: 46 °F

Saturday

Sunny

Sunny

High: 72 °F

Saturday
Night

Mostly Clear

Mostly
Clear

Low: 45 °F

Detailed Forecast

  • Tonight Partly cloudy, with a low around 49. Calm wind becoming southeast 5 to 7 mph in the evening.
  • Wednesday Mostly sunny, with a high near 83. South southeast wind around 5 mph becoming calm.
  • Wednesday Night Partly cloudy, with a low around 53. Southeast wind 5 to 7 mph.
  • Thursday A slight chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 83. South southwest wind 5 to 8 mph becoming west in the afternoon. Chance of precipitation is 20%.
  • Thursday Night A slight chance of showers and thunderstorms. Partly cloudy, with a low around 50. West southwest wind 7 to 9 mph. Chance of precipitation is 20%.
  • Friday A slight chance of showers, with thunderstorms also possible after noon. Partly sunny, with a high near 74. Chance of precipitation is 20%.
  • Friday Night A 20 percent chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 46.
  • Saturday Sunny, with a high near 72.
  • Saturday Night Mostly clear, with a low around 45.
  • Sunday Sunny, with a high near 74.
  • Sunday Night Mostly clear, with a low around 46.
  • Monday Sunny, with a high near 74.
  • Monday Night Mostly clear, with a low around 47.
  • Tuesday Sunny, with a high near 75.