Current conditions at
Grand Coulee Dam Airport (K3W7)
Lat: 47.92205°NLon: 119.083°WElev: 1593.0ft.
Clear
43°F
6°C
| Humidity | 45% |
| Wind Speed | E 6 MPH |
| Barometer | 30.33 in (1027.09 mb) |
| Dewpoint | 23°F (-5°C) |
| Visibility | 10.00 mi |
| Wind Chill | 39°F (4°C) |
| Last update | 15 Mar 04:15 PM PDT |
Extended Forecast for
Grand Coulee WA
This Afternoon

High: 45 °F
Chance Rain
Tonight
Low: 35 °F
Chance
Rain/Snow
then Slight
Chance SnowMonday
High: 55 °F
Slight Chance
Rain/Snow
then Slight
Chance RainMonday Night

Low: 43 °F
Mostly Cloudy
Tuesday

High: 66 °F
Partly Sunny
Tuesday Night

Low: 48 °F
Mostly Cloudy
Wednesday

High: 66 °F
Mostly Cloudy
Wednesday Night

Low: 51 °F
Slight Chance
RainThursday

High: 67 °F
Slight Chance
Rain
Detailed Forecast
This Afternoon
A 30 percent chance of rain after 5pm. Mostly cloudy, with a high near 45. South wind around 8 mph.
Tonight
A chance of rain and snow before 11pm, then a slight chance of snow after 5am. Cloudy, with a low around 35. East wind around 6 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Monday
A slight chance of rain and snow before 8am, then a slight chance of rain between 8am and 2pm. Mostly cloudy, with a high near 55. Southeast wind 5 to 8 mph becoming southwest in the afternoon. Chance of precipitation is 20%.
Monday Night
Mostly cloudy, with a low around 43. South wind around 8 mph.
Tuesday
Partly sunny, with a high near 66. South wind 7 to 11 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly cloudy, with a low around 48.
Wednesday
Mostly cloudy, with a high near 66.
Wednesday Night
A 20 percent chance of rain after 11pm. Mostly cloudy, with a low around 51.
Thursday
A 20 percent chance of rain. Mostly cloudy, with a high near 67.
Thursday Night
A 20 percent chance of rain after 11pm. Mostly cloudy, with a low around 51.
Friday
A 20 percent chance of rain. Mostly cloudy, with a high near 66.
Friday Night
Mostly cloudy, with a low around 44.
Saturday
Mostly sunny, with a high near 59.
Saturday Night
Mostly clear, with a low around 36.
Sunday
Sunny, with a high near 56.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Grand Coulee WA
47.94°N 119.02°W (Elev. 1601 ft)
47.94°N 119.02°W (Elev. 1601 ft)
3:21 pm PDT Mar 15, 2026
4pm PDT Mar 15, 2026-6pm PDT Mar 22, 2026


