Current conditions at
Grand Coulee Dam Airport (K3W7)
Lat: 47.92205°NLon: 119.083°WElev: 1593.0ft.
Clear
64°F
18°C
| Humidity | 31% |
| Wind Speed | S 3 MPH |
| Barometer | 29.67 in (1004.74 mb) |
| Dewpoint | 34°F (1°C) |
| Visibility | 10.00 mi |
| Last update | 10 Apr 06:35 PM PDT |
Extended Forecast for
Grand Coulee WA
Tonight

Low: 52 °F
Chance
ShowersSaturday

High: 65 °F
Chance
ShowersSaturday Night
Low: 45 °F
Chance
Showers then
Partly CloudySunday

High: 68 °F
Slight Chance
ShowersSunday Night
Low: 46 °F
Slight Chance
Showers then
Partly CloudyMonday

High: 66 °F
Mostly Sunny
Monday Night

Low: 41 °F
Partly Cloudy
Tuesday

High: 56 °F
Partly Sunny
Tuesday Night

Low: 40 °F
Chance Rain
Detailed Forecast
Tonight
A 30 percent chance of showers after 11pm. Mostly cloudy, with a low around 52. North wind around 6 mph becoming light and variable after midnight. New precipitation amounts of less than a tenth of an inch possible.
Saturday
A 50 percent chance of showers. Mostly cloudy, with a high near 65. Light and variable wind becoming southwest 5 to 9 mph in the morning. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday Night
A 30 percent chance of showers before 11pm. Partly cloudy, with a low around 45. Southwest wind 5 to 9 mph becoming light south after midnight. New precipitation amounts of less than a tenth of an inch possible.
Sunday
A 20 percent chance of showers after 11am. Mostly sunny, with a high near 68. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Sunday Night
A 20 percent chance of showers before 11pm. Partly cloudy, with a low around 46. West wind 6 to 8 mph.
Monday
Mostly sunny, with a high near 66.
Monday Night
Partly cloudy, with a low around 41.
Tuesday
Partly sunny, with a high near 56.
Tuesday Night
A 30 percent chance of rain. Mostly cloudy, with a low around 40.
Wednesday
A 30 percent chance of rain, mainly before 11am. Mostly sunny, with a high near 53.
Wednesday Night
Partly cloudy, with a low around 35.
Thursday
Mostly sunny, with a high near 57.
Thursday Night
Partly cloudy, with a low around 35.
Friday
Mostly sunny, with a high near 59.
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)
3:36 pm PDT Apr 10, 2026
6pm PDT Apr 10, 2026-6pm PDT Apr 17, 2026


