Grand Coulee, WA Weather Forecast
Local 7-day forecast
Mostly Sunny then Slight Chance Rain Showers
Track current conditions, temperature changes, wind, and the full daily outlook for Grand Coulee, WA in one place.
A slight chance of rain showers after 5pm. Mostly sunny, with a high near 84. South wind 2 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 20%.
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: Jun 1, 2026 1:59 PM PDT.
The active forecast window currently covers Jun 3 to Jun 7, 2026 for Grand Coulee, WA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jun 3 to Jun 7, 2026
- Latest sync
- Jun 1, 2026 1:59 PM PDT
- Forecast office
- OTX
- Source
- NOAA / NWS
Daily Outlook
This Week in Grand Coulee
Wednesday looks like the warmest upcoming period in Grand Coulee at 84 degrees F.
Saturday Night is the coolest period ahead with temperatures near 45 degrees F.
The strongest winds are forecast for Friday Night at about 9 to 16 mph SW.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- Jun 1, 2026 1:59 PM 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
A slight chance of rain showers before 5am. Mostly cloudy, with a low around 54. Chance of precipitation is 20%.
Mostly sunny, with a high near 80.
Mostly clear, with a low around 51.
Sunny, with a high near 78.
Mostly clear, with a low around 49.
Mostly sunny, with a high near 71.
Partly cloudy, with a low around 45.
Mostly sunny, with a high near 73.
Partly cloudy, with a low around 48.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Jun 3
|
Mostly Sunny then Slight Chance Rain Showers
|
84°F |
2 to 9 mph
S
|
|
Wednesday Night
Jun 3
|
Slight Chance Rain Showers
|
54°F |
3 to 9 mph
SW
|
|
Thursday
Jun 4
|
Mostly Sunny
|
80°F |
3 to 12 mph
SW
|
|
Thursday Night
Jun 4
|
Mostly Clear
|
51°F |
3 to 12 mph
S
|
|
Friday
Jun 5
|
Sunny
|
78°F |
3 to 15 mph
S
|
|
Friday Night
Jun 5
|
Mostly Clear
|
49°F |
9 to 16 mph
SW
|
|
Saturday
Jun 6
|
Mostly Sunny
|
71°F |
9 to 15 mph
SW
|
|
Saturday Night
Jun 6
|
Partly Cloudy
|
45°F |
5 to 15 mph
W
|
|
Sunday
Jun 7
|
Mostly Sunny
|
73°F |
5 to 9 mph
W
|
|
Sunday Night
Jun 7
|
Partly Cloudy
|
48°F |
3 to 9 mph
W
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Grand Coulee.
