National Weather Service United States Department of Commerce

We need your feedback! Take our new, shorter survey

NWS is conducting research on how to better serve your needs. Please complete our annual customer satisfaction survey. We’ve shortened it from previous years to make it easier for you to share your opinions with us. The survey is available via the link below and the core section should only take about 10 minutes to complete. Details...
Read More...

Current Conditions

En Español

Share |

Grand Coulee WA

7 Day Forecast

For More Weather Information:

Spokane, WA Local Forecast Office

Tonight

Isolated Showers Chance for Measurable Precipitation 20%

Isolated
Showers

Low: 17 °C

Tuesday

Slight Chance Showers Chance for Measurable Precipitation 20%

Slight Chc
Showers

High: 24 °C

Tuesday
Night

Slight Chance Rain Chance for Measurable Precipitation 20%

Slight Chc
Rain

Low: 14 °C

Wednesday

Rain Likely Chance for Measurable Precipitation 60%

Rain
Likely

High: 23 °C

Wednesday
Night

Chance Rain Chance for Measurable Precipitation 40%

Chance
Rain

Low: 13 °C

Thursday

Chance Showers Chance for Measurable Precipitation 40%

Chance
Showers

High: 22 °C

Thursday
Night

Chance Showers Chance for Measurable Precipitation 30%

Chance
Showers

Low: 9 °C

Friday

Slight Chance Showers Chance for Measurable Precipitation 20%

Slight Chc
Showers

High: 22 °C

Friday
Night

Slight Chance Showers Chance for Measurable Precipitation 20%

Slight Chc
Showers

Low: 9 °C

Detailed Forecast

  • Tonight Isolated showers. Mostly cloudy, with a low around 17. South wind 5 to 8 km/h becoming calm after midnight. Chance of precipitation is 20%.
  • Tuesday A 20 percent chance of showers. Mostly cloudy, with a high near 24. Southeast wind 5 to 10 km/h increasing to 11 to 16 km/h in the afternoon.
  • Tuesday Night A 20 percent chance of rain. Cloudy, with a low around 14. South wind 5 to 13 km/h becoming north in the evening.
  • Wednesday Rain likely, mainly after 11am. Cloudy, with a high near 23. Southeast wind 5 to 13 km/h becoming southwest in the morning. Chance of precipitation is 60%. New precipitation amounts between 2.5 and 5 mm possible.
  • Wednesday Night A 40 percent chance of rain. Cloudy, with a low around 13. South wind 10 to 14 km/h. New precipitation amounts between 1 and 2.5 mm possible.
  • Thursday A 40 percent chance of showers. Mostly cloudy, with a high near 22.
  • Thursday Night A 30 percent chance of showers, mainly before 11pm. Mostly cloudy, with a low around 9.
  • Friday A 20 percent chance of showers. Partly sunny, with a high near 22.
  • Friday Night A 20 percent chance of showers. Mostly cloudy, with a low around 9.
  • Saturday Mostly sunny, with a high near 24.
  • Saturday Night Partly cloudy, with a low around 10.
  • Sunday Mostly sunny, with a high near 23.
  • Sunday Night Partly cloudy, with a low around 11.
  • Monday Partly sunny, with a high near 23.