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 Pacific Northwest through late 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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Hazardous Weather Conditions

Current Conditions

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Cascade ID

7 Day Forecast

For More Weather Information:

Boise, ID Local Forecast Office

Today

Rain Chance for Measurable Precipitation 100%

Rain

High: 5 °C

Tonight

Rain/Snow Chance for Measurable Precipitation 80%

Rain/Snow

Low: 0 °C

Monday

Chance Snow Chance for Measurable Precipitation 40%

Chance
Snow

High: 2 °C

Monday
Night

Patchy Fog

Patchy
Fog

Low: -7 °C

Tuesday

Patchy Fog

Patchy
Fog

High: 3 °C

Tuesday
Night

Slight Chance Snow Chance for Measurable Precipitation 20%

Slight Chc
Snow

Low: -3 °C

Wednesday

Chance Snow Chance for Measurable Precipitation 30%

Chance
Snow

High: 4 °C

Wednesday
Night

Snow Likely Chance for Measurable Precipitation 70%

Snow
Likely

Low: -6 °C

Christmas
Day

Chance Snow Chance for Measurable Precipitation 30%

Chance
Snow

High: -3 °C

Detailed Forecast

  • Today Rain. High near 5. South wind 14 to 23 km/h becoming northwest in the afternoon. Chance of precipitation is 100%.
  • Tonight Rain and snow, becoming all snow after 11pm. Low around 0. West wind 5 to 13 km/h. Chance of precipitation is 80%. New snow accumulation of less than a half centimeter possible.
  • Monday A 40 percent chance of snow. Mostly cloudy, with a high near 2. West northwest wind 5 to 8 km/h. New snow accumulation of less than a half centimeter possible.
  • Monday Night Patchy fog after 11pm. Otherwise, partly cloudy, with a low around -7. Calm wind.
  • Tuesday Patchy fog before 11am. Otherwise, mostly sunny, with a high near 3. Calm wind.
  • Tuesday Night A 20 percent chance of snow showers after 11pm. Mostly cloudy, with a low around -3.
  • Wednesday A 30 percent chance of snow. Mostly cloudy, with a high near 4. New snow accumulation of less than one centimeter possible.
  • Wednesday Night Snow likely. Cloudy, with a low around -6. Chance of precipitation is 70%.
  • Christmas Day A 30 percent chance of snow. Mostly cloudy, with a high near -3.
  • Thursday Night A 20 percent chance of snow showers. Mostly cloudy, with a low around -12.
  • Friday A 20 percent chance of snow. Mostly cloudy, with a high near -4.
  • Friday Night Mostly cloudy, with a low around -11.
  • Saturday A 20 percent chance of snow showers. Mostly cloudy, with a high near -3.