Grand Coulee, WA Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Grand Coulee, WA in one place.
Sunny, with a high near 94. Southwest wind 5 to 14 mph, with gusts as high as 28 mph.
Local Weather Overview
This forecast page for Grand Coulee, WA is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Jul 17, 2026 3:39 AM PDT.
The active forecast window currently covers Jul 18 to Jul 23, 2026 for Grand Coulee, WA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 18 to Jul 23, 2026
- Latest sync
- Jul 17, 2026 3:39 AM PDT
- Forecast office
- OTX
- Source
- NOAA / NWS
Daily Outlook
This Week in Grand Coulee
Tuesday looks like the warmest upcoming period in Grand Coulee at 101 degrees F.
Saturday Night is the coolest period ahead with temperatures near 64 degrees F.
The strongest winds are forecast for Saturday at about 5 to 14 mph SW.
The forecast from Jul 18 through Jul 23 stays mostly dry.
Forecast Details
- Last updated
- Jul 17, 2026 3:39 AM PDT
- Coverage
- 6 days
- Time zone
- America/Los_Angeles
- Forecast office
- OTX
- Radar station
- KOTX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Clear, with a low around 64. West wind 3 to 14 mph, with gusts as high as 28 mph.
Sunny, with a high near 95.
Mostly clear, with a low around 67.
Mostly sunny, with a high near 99.
Mostly cloudy, with a low around 72.
Mostly sunny, with a high near 101.
Partly cloudy, with a low around 73.
Mostly sunny, with a high near 101.
Partly cloudy, with a low around 72.
Mostly sunny, with a high near 100.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Jul 18
|
Sunny
|
94°F |
5 to 14 mph
SW
|
|
Saturday Night
Jul 18
|
Clear
|
64°F |
3 to 14 mph
W
|
|
Sunday
Jul 19
|
Sunny
|
95°F |
3 to 8 mph
W
|
|
Sunday Night
Jul 19
|
Mostly Clear
|
67°F |
3 to 8 mph
N
|
|
Monday
Jul 20
|
Mostly Sunny
|
99°F |
6 mph
SE
|
|
Monday Night
Jul 20
|
Mostly Cloudy
|
72°F |
2 to 6 mph
E
|
|
Tuesday
Jul 21
|
Mostly Sunny
|
101°F |
2 to 7 mph
NW
|
|
Tuesday Night
Jul 21
|
Partly Cloudy
|
73°F |
2 to 7 mph
NW
|
|
Wednesday
Jul 22
|
Mostly Sunny
|
101°F |
2 to 8 mph
W
|
|
Wednesday Night
Jul 22
|
Partly Cloudy
|
72°F |
2 to 8 mph
W
|
|
Thursday
Jul 23
|
Mostly Sunny
|
100°F |
2 to 8 mph
SE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Grand Coulee.
