National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Storm Systems Continue to Impact the Pacific Northwest; Lake Effect Snow Continues

A second Pacific cold front will cross the Pacific Northwest Wednesday followed by another atmospheric river. Each of these features will bring additional periods of gusty winds, mountain snow, and heavy to excessive rainfall with renewed flooding. Heavy lake effect snow continues into Tuesday east of Lakes Erie and Ontario. Read More >

Hazardous Weather Conditions

Current conditions at

Grand Coulee Dam Airport (K3W7)

Lat: 47.92205°NLon: 119.083°WElev: 1593.0ft.

Clear

52°F

11°C

Humidity 66%
Wind Speed SSW 10 MPH
Barometer 29.8 in (1009.14 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 15 Dec 07:55 PM PST
Extended Forecast for

2 Miles WNW Coulee City WA

High Wind Watch December 16, 10:00pm until December 17, 04:00pm
Wind Advisory until December 16, 06:00am
Click here for hazard details and duration
High Wind Watch
Wind Advisory
  •  
    Wind Advisory until December 16, 06:00am

    NOW until 6:00am Tue

    Wind Advisory

  • Tonight

    Low: 36 °F

    Partly Cloudy
    and Breezy

  • Tuesday

    Tuesday: A 50 percent chance of rain, mainly after 4pm. Partly sunny, with a high near 50. South wind 13 to 16 mph, with gusts as high as 25 mph. New precipitation amounts of less than a tenth of an inch possible.

    High: 50 °F

    Chance Rain

  • Tuesday Night

    Tuesday Night: Rain, mainly between 10pm and 4am. Low around 39. Windy, with a southwest wind 28 to 34 mph, with gusts as high as 55 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 39 °F

    Rain and
    Windy

  • Wednesday

    Wednesday: A chance of rain and snow before 10am. Mostly sunny, with a high near 48. Windy, with a southwest wind 31 to 34 mph, with gusts as high as 55 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    High: 48 °F

    Windy. Chance
    Rain/Snow
    then Sunny

  • Wednesday Night

    Wednesday Night: Rain likely after 4am. Mostly cloudy, with a low around 35. South wind 11 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 35 °F

    Mostly Cloudy
    then Rain
    Likely

  • Thursday

    Thursday: Rain, possibly mixed with snow. High near 41. Chance of precipitation is 90%. Little or no snow accumulation expected.

    High: 41 °F

    Rain/Snow

  • Thursday Night

    Thursday Night: Rain likely before 1am, then a chance of rain and snow. Mostly cloudy, with a low around 34. Chance of precipitation is 60%. Little or no snow accumulation expected.

    Low: 34 °F

    Rain Likely
    then Chance
    Rain/Snow

  • Friday

    Friday: A slight chance of rain and snow. Mostly sunny, with a high near 42. Chance of precipitation is 20%.

    High: 42 °F

    Slight Chance
    Rain/Snow

Detailed Forecast

Tonight
Partly cloudy, with a low around 36. Breezy, with a southwest wind 15 to 24 mph, with gusts as high as 39 mph.
Tuesday
A 50 percent chance of rain, mainly after 4pm. Partly sunny, with a high near 50. South wind 13 to 16 mph, with gusts as high as 25 mph. New precipitation amounts of less than a tenth of an inch possible.
Tuesday Night
Rain, mainly between 10pm and 4am. Low around 39. Windy, with a southwest wind 28 to 34 mph, with gusts as high as 55 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
A chance of rain and snow before 10am. Mostly sunny, with a high near 48. Windy, with a southwest wind 31 to 34 mph, with gusts as high as 55 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Wednesday Night
Rain likely after 4am. Mostly cloudy, with a low around 35. South wind 11 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Rain, possibly mixed with snow. High near 41. Chance of precipitation is 90%. Little or no snow accumulation expected.
Thursday Night
Rain likely before 1am, then a chance of rain and snow. Mostly cloudy, with a low around 34. Chance of precipitation is 60%. Little or no snow accumulation expected.
Friday
A slight chance of rain and snow. Mostly sunny, with a high near 42. Chance of precipitation is 20%.
Friday Night
Partly cloudy, with a low around 28.
Saturday
A slight chance of snow after 10am, mixing with rain after 4pm. Mostly sunny, with a high near 40. Chance of precipitation is 20%.
Saturday Night
A slight chance of rain and snow. Partly cloudy, with a low around 26. Chance of precipitation is 20%.
Sunday
A 20 percent chance of snow. Partly sunny, with a high near 38.
Sunday Night
A 40 percent chance of snow. Mostly cloudy, with a low around 28.
Monday
A chance of rain and snow. Partly sunny, with a high near 39. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WNW Coulee City WA
 47.63°N 119.32°W (Elev. 1568 ft)
Last Update:
2:48 pm PST Dec 15, 2025
Forecast Valid:
8pm PST Dec 15, 2025-6pm PST Dec 22, 2025
 
Forecast Discussion
 
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Additional Resources

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National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation