Weather forecast for 10 days
Grand Coulee, WA

Weather forecast for the weekend

Saturday, Jun 21.

AM Showers
4:54 am

9:01 pm
PDT
AM Showers
63°F / 48°F
  • Wind: 9mph W
  • Humidity: 58%
  • Precip. probability: 36%
  • Precipitation: 0.04"
  • UV index: 5
On Saturday, June 21, expect passing morning showers bringing damp conditions.
Minimal precipitation is anticipated. The temperature variation is expected to range from a maximum of a comfortable 62.6°F to a minimum of a frosty 48.2°F.
A forecast high of 62.6°F brings conditions more familiar to May's average than June's.
Sunrise will be at 4:54 am and sunset at 9:01 pm; the daylight will last for 16h and 6min.

Sunday, Jun 22.

Partly Cloudy
4:55 am

9:01 pm
PDT
Partly Cloudy
73°F / 52°F
  • Wind: 7mph SSE
  • Humidity: 51%
  • Precip. probability: 20%
  • Precipitation: 0"
  • UV index: 7
On Sunday, June 22, expect a mix of sun and clouds throughout the day.
Rainfall is not predicted. The maximum temperature will be a temperate 73.4°F, while the minimum expected temperature is a crisp 51.8°F.
The forecasted daytime maximum should align with the typical June high of 74.3°F.
Sunrise will be at 4:55 am and sunset at 9:01 pm; the daylight will last for 16h and 6min.

Frequently asked questions

What is the weather forecast for Grand Coulee for Saturday?
On Saturday, expect drizzly conditions with morning showers.
Will it rain on Saturday?
On Saturday, there is a low chance of minimal precipitation in Grand Coulee.
What will be the maximum temperature in Grand Coulee on Saturday?
On Saturday, the maximum temperature will be 62.6°F, while the minimum temperature will be 48.2°F.
What is the weather forecast for Grand Coulee for Sunday?
On Sunday, in Grand Coulee, moderate cloud cover will mix with sunshine throughout the day.
Will it rain on Sunday?
No, it will not rain on Sunday.
What will be the highest temperature on Sunday?
On Sunday, the highest temperature will be 73.4°F, while the lowest temperature will be 51.8°F.
What is the weather forecast for Grand Coulee for the next ten days?
In Grand Coulee, a combination of cloudy, clear and rainy weather is anticipated for the next ten days.
Will it rain in the next ten days?
Rainfall is forecasted only for Saturday. With a probability of 36%, minimal precipitation of 0.04" is expected.
How hot will it be in the next ten days?
The maximum temperature will range between 62.6°F and 87.8°F, while the minimum temperature will vary between 48.2°F and 59°F.
What will be the hottest and the coldest days?
The hottest day will be next Wednesday, with a maximum of 87.8°F. With a maximum temperature of 62.6°F, Saturday will be the coldest day.

Long-term weather forecast

MonJun 16.
  • min.
  • 52°F
Mostly Clear
Mostly Clear
  • Wind: 12mph W
  • Humidity: 36%
  • UV index: 0
  • Precip. probability: 1%
  • Precipitation: 0"
  • 4:54 am 8:59 pm PDT
TueJun 17.
  • 84°F
  • 54°F
Mostly Sunny
Mostly Sunny
  • Wind: 11mph SSW
  • Humidity: 26%
  • UV index: 8
  • Precip. probability: 0%
  • Precipitation: 0"
  • 4:54 am 8:59 pm PDT
WedJun 18.
  • 82°F
  • 48°F
Sunny
Sunny
  • Wind: 17mph SW
  • Humidity: 32%
  • UV index: 8
  • Precip. probability: 0%
  • Precipitation: 0"
  • 4:54 am 9:00 pm PDT
ThuJun 19.
  • 79°F
  • 54°F
Partly Cloudy
Partly Cloudy
  • Wind: 7mph WSW
  • Humidity: 30%
  • UV index: 8
  • Precip. probability: 0%
  • Precipitation: 0"
  • 4:54 am 9:00 pm PDT
FriJun 20.
  • 70°F
  • 48°F
Cloudy
Cloudy
  • Wind: 12mph SSW
  • Humidity: 40%
  • UV index: 5
  • Precip. probability: 19%
  • Precipitation: 0"
  • 4:54 am 9:00 pm PDT
SatJun 21.
  • 63°F
  • 48°F
AM Showers
AM Showers
  • Wind: 9mph W
  • Humidity: 58%
  • UV index: 5
  • Precip. probability: 36%
  • Precipitation: 0.04"
  • 4:54 am 9:01 pm PDT
SunJun 22.
  • 73°F
  • 52°F
Partly Cloudy
Partly Cloudy
  • Wind: 7mph SSE
  • Humidity: 51%
  • UV index: 7
  • Precip. probability: 20%
  • Precipitation: 0"
  • 4:55 am 9:01 pm PDT
MonJun 23.
  • 81°F
  • 55°F
Partly Cloudy
Partly Cloudy
  • Wind: 6mph SSE
  • Humidity: 42%
  • UV index: 8
  • Precip. probability: 7%
  • Precipitation: 0"
  • 4:55 am 9:01 pm PDT
TueJun 24.
  • 86°F
  • 59°F
Mostly Sunny
Mostly Sunny
  • Wind: 6mph SSE
  • Humidity: 34%
  • UV index: 8
  • Precip. probability: 1%
  • Precipitation: 0"
  • 4:55 am 9:01 pm PDT
WedJun 25.
  • 88°F
  • 59°F
Partly Cloudy
Partly Cloudy
  • Wind: 9mph W
  • Humidity: 32%
  • UV index: 8
  • Precip. probability: 1%
  • Precipitation: 0"
  • 4:56 am 9:01 pm PDT
Looking ahead, conditions suggest a period of cloudy, bright and rainy weather is anticipated.
With a probability of 36%, rainfall is predicted only for Saturday. The precipitation will be minimal at 0.04".
Temperature differences will be noticeable throughout the forecast window. Maximum temperatures are forecasted between 62.6°F and 87.8°F, while nighttime temperatures are expected to vary from 48.2°F to 59°F.
With the highest temperature of 87.8°F, next Wednesday will be the hottest day; with the highest temperature of 62.6°F, Saturday will be the coldest day.
Updated: Jun 17, 2025 @ 00:41:23 UTC
Published by: Weather U.S. | About Us
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