Grand Coulee, WA Weather Forecast
Local 7-day forecast
Patchy Blowing Dust
Track current conditions, temperature changes, wind, and the full daily outlook for Grand Coulee, WA in one place.
Patchy blowing dust between 11am and 5pm. Sunny. High near 63, with temperatures falling to around 60 in the afternoon. Northwest wind 10 to 21 mph, with gusts as high as 37 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: Oct 22, 2026 1:00 PM PDT.
The active forecast window currently covers Oct 23 to Oct 28, 2026 for Grand Coulee, WA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 23 to Oct 28, 2026
- Latest sync
- Oct 22, 2026 1:00 PM PDT
- Forecast office
- OTX
- Source
- NOAA / NWS
Daily Outlook
This Week in Grand Coulee
Friday looks like the warmest upcoming period in Grand Coulee at 63 degrees F.
Friday Night is the coolest period ahead with temperatures near 35 degrees F.
The strongest winds are forecast for Friday at about 10 to 21 mph NW.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 22, 2026 1:00 PM PDT
- Coverage
- 7 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
Partly cloudy, with a low around 35. North wind 2 to 10 mph, with gusts as high as 28 mph.
Mostly sunny, with a high near 59. Southeast wind 2 to 6 mph.
Mostly cloudy, with a low around 40.
A slight chance of rain showers after 5pm. Partly sunny, with a high near 61. Chance of precipitation is 20%.
A chance of rain showers. Mostly cloudy, with a low around 41. Chance of precipitation is 40%.
A chance of rain showers. Partly sunny, with a high near 60. Chance of precipitation is 40%.
A slight chance of rain showers. Mostly cloudy, with a low around 39. Chance of precipitation is 20%.
A slight chance of rain showers before 11am. Partly sunny, with a high near 59. Chance of precipitation is 20%.
Mostly cloudy, with a low around 38.
Partly sunny, with a high near 59.
Partly cloudy, with a low around 37.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Oct 23
|
Patchy Blowing Dust
|
63°F |
10 to 21 mph
NW
|
|
Friday Night
Oct 23
|
Partly Cloudy
|
35°F |
2 to 10 mph
N
|
|
Saturday
Oct 24
|
Mostly Sunny
|
59°F |
2 to 6 mph
SE
|
|
Saturday Night
Oct 24
|
Mostly Cloudy
|
40°F |
5 mph
E
|
|
Sunday
Oct 25
|
Partly Sunny then Slight Chance Rain Showers
|
61°F |
5 mph
NE
|
|
Sunday Night
Oct 25
|
Chance Rain Showers
|
41°F |
5 mph
NE
|
|
Monday
Oct 26
|
Chance Rain Showers
|
60°F |
5 mph
N
|
|
Monday Night
Oct 26
|
Slight Chance Rain Showers
|
39°F |
2 mph
N
|
|
Tuesday
Oct 27
|
Slight Chance Rain Showers then Partly Sunny
|
59°F |
3 mph
NW
|
|
Tuesday Night
Oct 27
|
Mostly Cloudy
|
38°F |
3 mph
NW
|
|
Wednesday
Oct 28
|
Partly Sunny
|
59°F |
5 mph
NE
|
|
Wednesday Night
Oct 28
|
Partly Cloudy
|
37°F |
3 mph
N
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Grand Coulee.
