Weather forecast for tomorrowCoulee Dam, WA
Weather forecast for tomorrow
Sunday Oct 18, 2026
- 66°F
- 41°F
Mostly Sunny
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 4mphNE 56°
- Humidity: 43%
- UV index: 3
- Sunrise: 7:20 am PDT
- Sunset: 6:01 pm PDT
- details ▼
Tomorrow, on Sunday, October 18, dry and sunny weather is expected throughout the day.
The maximum predicted temperature is a comfortable 66.2°F, while the minimum temperature will be a wintry 41°F.
Tomorrow, the maximum temperature will be higher and more reflective of September's average high of 72.7°F than October's of 56.3°F.
Sunrise will be at 7:20 am and sunset at 6:01 pm; tomorrow's daylight will last for 10h and 42min.
The maximum predicted temperature is a comfortable 66.2°F, while the minimum temperature will be a wintry 41°F.
Tomorrow, the maximum temperature will be higher and more reflective of September's average high of 72.7°F than October's of 56.3°F.
Sunrise will be at 7:20 am and sunset at 6:01 pm; tomorrow's daylight will last for 10h and 42min.
Hourly overview
Hourly temperatures
Warmest hour: 3 pm 64°C.
Coldest hour: 6 am 34°C.
Coldest hour: 6 am 34°C.
Chance of precipitation
Highest chance: 6 am 3%.
Hourly weather forecast
- 12 am
- 45°F
- Feels like:41°F
Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 5mphNW 312°
- Humidity: 57%
- Pressure: 30.15"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 2 am
- 41°F
- Feels like:37°F
Clear
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 4mphNW 325°
- Humidity: 65%
- Pressure: 30.15"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 4 am
- 37°F
- Feels like:34°F
Clear
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 4mphNNW 333°
- Humidity: 71%
- Pressure: 30.15"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 6 am
- 34°F
- Feels like:30°F
Clear
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 4mphNNW 346°
- Humidity: 78%
- Pressure: 30.18"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunrise: 7:20 am
- 8 am
- 36°F
- Feels like:36°F
Sunny
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 3mphNNW 349°
- Humidity: 83%
- Pressure: 30.21"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 am
- 46°F
- Feels like:46°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 3mphNNE 17°
- Humidity: 52%
- Pressure: 30.18"Hg
- Visibility: 10mi
- UV index: 1
- details ▼
- 12 pm
- 55°F
- Feels like:55°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 3mphNNE 31°
- Humidity: 36%
- Pressure: 30.12"Hg
- Visibility: 10mi
- UV index: 3
- details ▼
- 2 pm
- 63°F
- Feels like:63°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 3mphESE 121°
- Humidity: 27%
- Pressure: 30.06"Hg
- Visibility: 10mi
- UV index: 2
- details ▼
- 4 pm
- 64°F
- Feels like:64°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 4mphESE 109°
- Humidity: 23%
- Pressure: 30"Hg
- Visibility: 10mi
- UV index: 1
- details ▼
- 6 pm
- 59°F
- Feels like:59°F
Partly Cloudy
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 3mphE 94°
- Humidity: 30%
- Pressure: 30"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunset: 6:01 pm
- 8 pm
- 50°F
- Feels like:50°F
Mostly Cloudy
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 4mphN 350°
- Humidity: 43%
- Pressure: 30"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 pm
- 46°F
- Feels like:45°F
Partly Cloudy
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 4mphN 355°
- Humidity: 54%
- Pressure: 29.97"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Tomorrow, a combination of gloomy and clear weather is anticipated.
The temperature will be between a minimum of 33.8°F and a maximum of 64.4°F. The warmest part of the day will be at 3 pm and 4 pm.
Tomorrow, the peak temperature is expected to align more with September than with October's typical high. The lowest temperature tomorrow will be close to October's average minimum.
The temperature will be between a minimum of 33.8°F and a maximum of 64.4°F. The warmest part of the day will be at 3 pm and 4 pm.
Tomorrow, the peak temperature is expected to align more with September than with October's typical high. The lowest temperature tomorrow will be close to October's average minimum.
Updated: Oct 17, 2026 @ 20:27:40 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Frequently asked questions
Tomorrow, in Coulee Dam, expect brilliant sunshine under mostly clear skies.
Tomorrow, the highest temperature will be 66.2°F, while the lowest temperature will be 41°F.
The highest temperature tomorrow will be noticeably higher than the average maximum of 56.3°F in October. The lowest temperature will be in line with the average low of 41.4°F.
The highest temperature tomorrow will be noticeably higher than the average maximum of 56.3°F in October. The lowest temperature will be in line with the average low of 41.4°F.
On Sunday, in Coulee Dam, sunrise will be at 7:20 am and sunset at 6:01 pm (PDT).
In Coulee Dam, tomorrow, there will be 10h and 42min of daylight.
