National Weather Service United States Department of Commerce

Heavy rain and mountain snow across the northwestern U.S. this weekend

A Pacific storm system will continue to impact the West Coast through Sunday. Heavy rainfall could lead to flash flooding, river and small stream flooding, as well as mudslides and debris flows, especially over burn scars. At higher elevations, strong winds and heavy snowfall, with accumulations of 1 to 3 feet, could result in hazardous travel through mountain passes.
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Current Conditions

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Arco ID

7 Day Forecast

For More Weather Information:

Pocatello, ID Local Forecast Office

Tonight

Rain/Snow Chance for Measurable Precipitation 80%

Rain/Snow

Low: 28 °F

Sunday

Chance Rain Chance for Measurable Precipitation 50%

Chance
Rain

High: 46 °F

Sunday
Night

Chance Rain Chance for Measurable Precipitation 30%

Chance
Rain

Low: 26 °F

Monday

Slight Chance Snow Chance for Measurable Precipitation 20%

Slight Chc
Snow

High: 39 °F

Monday
Night

Partly Cloudy

Partly
Cloudy

Low: 18 °F

Tuesday

Mostly Sunny

Mostly
Sunny

High: 34 °F

Tuesday
Night

Mostly Cloudy

Mostly
Cloudy

Low: 23 °F

Wednesday

Partly Sunny

Partly
Sunny

High: 34 °F

Wednesday
Night

Chance Snow

Chance
Snow

Low: 21 °F

Detailed Forecast

  • Tonight Rain and snow, mainly before 11pm. Low around 28. Southwest wind 10 to 14 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. Total nighttime snow accumulation of 1 to 2 inches possible.
  • Sunday A 50 percent chance of rain. Cloudy, with a high near 46. Southwest wind 7 to 13 mph, with gusts as high as 21 mph.
  • Sunday Night A chance of rain. Cloudy, with a low around 26. Southwest wind 9 to 11 mph becoming west northwest after midnight. Chance of precipitation is 30%.
  • Monday A 20 percent chance of snow showers before 11am. Partly sunny, with a high near 39. Northwest wind 11 to 14 mph, with gusts as high as 22 mph.
  • Monday Night Partly cloudy, with a low around 18. Northwest wind 8 to 10 mph.
  • Tuesday Mostly sunny, with a high near 34.
  • Tuesday Night Mostly cloudy, with a low around 23.
  • Wednesday Partly sunny, with a high near 34.
  • Wednesday Night A chance of snow. Cloudy, with a low around 21.
  • Christmas Day A slight chance of snow. Mostly cloudy, with a high near 32.
  • Thursday Night Mostly cloudy, with a low around 10.
  • Friday Partly sunny, with a high near 28.
  • Friday Night Mostly cloudy, with a low around 12.
  • Saturday Partly sunny, with a high near 27.