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Current conditions at
Grand Coulee Dam Airport (K3W7)
Lat: 47.92205°NLon: 119.083°WElev: 1593.0ft.
Mostly Cloudy
72°F
22°C
| Humidity | 37% |
| Wind Speed | SSW 13 MPH |
| Barometer | 29.68 in (1005.08 mb) |
| Dewpoint | 45°F (7°C) |
| Visibility | 10.00 mi |
| Last update | 02 Sep 05:15 PM PDT |
Extended Forecast for
Coulee City WA
This Afternoon

High: 73 °F
Showers
Likely and
BreezyTonight
Low: 49 °F
Showers
Likely and
Windy then
Chance
Showers and
BreezyThursday

High: 69 °F
Mostly Sunny
Thursday Night

Low: 48 °F
Mostly Cloudy
Friday

High: 69 °F
Chance
ShowersFriday Night
Low: 51 °F
Slight Chance
Showers then
Mostly CloudySaturday

High: 71 °F
Slight Chance
ShowersSaturday Night

Low: 52 °F
Partly Cloudy
Sunday
High: 75 °F
Partly Sunny
and Breezy
then Mostly
Sunny
Detailed Forecast
This Afternoon
Showers likely. Mostly cloudy, with a high near 73. Breezy, with a south wind around 24 mph, with gusts as high as 38 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Showers likely, mainly before 11pm. Cloudy, with a low around 49. Windy, with a south wind 15 to 25 mph, with gusts as high as 34 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Mostly sunny, with a high near 69. South wind 10 to 13 mph.
Thursday Night
Mostly cloudy, with a low around 48. South wind 5 to 9 mph becoming light and variable.
Friday
A 30 percent chance of showers after 11am. Partly sunny, with a high near 69. North wind 6 to 8 mph becoming south in the afternoon.
Friday Night
A 20 percent chance of showers before 11pm. Mostly cloudy, with a low around 51.
Saturday
A 20 percent chance of showers. Partly sunny, with a high near 71.
Saturday Night
Partly cloudy, with a low around 52.
Sunday
Mostly sunny, with a high near 75. Breezy.
Sunday Night
A 20 percent chance of showers. Partly cloudy, with a low around 55.
Labor Day
A 30 percent chance of showers. Partly sunny, with a high near 75.
Monday Night
A 20 percent chance of showers. Partly cloudy, with a low around 54.
Tuesday
Mostly sunny, with a high near 77.
Tuesday Night
Partly cloudy, with a low around 56.
Wednesday
Sunny, with a high near 80.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
Coulee City WA
47.63°N 119.32°W (Elev. 1568 ft)
47.63°N 119.32°W (Elev. 1568 ft)
4:11 pm PDT Sep 2, 2026
5pm PDT Sep 2, 2026-6pm PDT Sep 9, 2026


