Weather forecast for 10 daysCastle Rock, WA

Weather forecast for the weekend

Saturday Oct 17, 2026

  • min.
  • 41°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 8%
  • Precipitation: 0"
  • Wind: 4mphNNW 344°
  • Humidity: 77%
  • UV index: 0
  • Sunrise: 7:32 am PDT
  • Sunset: 6:21 pm PDT
  • ▼
For the rest of Saturday, occasional clouds will pass by, but expect bright spells.
The lowest temperature will be an icy 41°F.
Sunrise was at 7:32 am and sunset will be at 6:21 pm; the daylight will last for 10h and 50min.

Sunday Oct 18, 2026

  • 64°F
  • 45°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 8%
  • Precipitation: 0"
  • Wind: 8mphN 357°
  • Humidity: 67%
  • UV index: 3
  • Sunrise: 7:33 am PDT
  • Sunset: 6:19 pm PDT
  • ▼
Tomorrow, blue skies and warm sunshine will define the conditions.
The temperature variation is anticipated to range from a maximum of a comfortable 64.4°F to a minimum of a chilly 44.6°F.
Anticipated temperatures are trending slightly warmer than October's climate norm of 58.8°F.
Sunrise will be at 7:33 am and sunset at 6:19 pm; tomorrow's daylight will last for 10h and 47min.

10-day overview

Daily temperatures

Warmest day: Wednesday 70°C.
Coldest day: Saturday 24.10. 55°C.

Chance of precipitation

Highest chance: Saturday 24.10. 41%.

Long-term weather forecast

  • Saturday
  • Oct 17, 2026
  • min.
  • 41°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 8%
  • Precipitation: 0"
  • Wind: 4mphNNW 344°
  • Humidity: 77%
  • UV index: 0
  • Sunrise: 7:32 am PDT
  • Sunset: 6:21 pm PDT
  • ▼
  • Sunday
  • Oct 18, 2026
  • 64°F
  • 45°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 8%
  • Precipitation: 0"
  • Wind: 8mphN 357°
  • Humidity: 67%
  • UV index: 3
  • Sunrise: 7:33 am PDT
  • Sunset: 6:19 pm PDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 64°F
  • 43°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 5mphSW 223°
  • Humidity: 66%
  • UV index: 3
  • Sunrise: 7:34 am PDT
  • Sunset: 6:18 pm PDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 66°F
  • 41°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 8%
  • Precipitation: 0"
  • Wind: 8mphN 358°
  • Humidity: 68%
  • UV index: 3
  • Sunrise: 7:36 am PDT
  • Sunset: 6:16 pm PDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 70°F
  • 43°F
Sunny
Sunny
  • Precip. probability: 8%
  • Precipitation: 0"
  • Wind: 4mphN 358°
  • Humidity: 66%
  • UV index: 3
  • Sunrise: 7:37 am PDT
  • Sunset: 6:14 pm PDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 59°F
  • 43°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 22%
  • Precipitation: 0"
  • Wind: 5mphWSW 242°
  • Humidity: 81%
  • UV index: 2
  • Sunrise: 7:39 am PDT
  • Sunset: 6:13 pm PDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 59°F
  • 41°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 22%
  • Precipitation: 0"
  • Wind: 5mphW 262°
  • Humidity: 76%
  • UV index: 2
  • Sunrise: 7:40 am PDT
  • Sunset: 6:11 pm PDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 55°F
  • 41°F
Showers
Showers
  • Precip. probability: 41%
  • Precipitation: 0.16"
  • Wind: 6mphNE 34°
  • Humidity: 81%
  • UV index: 2
  • Sunrise: 7:41 am PDT
  • Sunset: 6:09 pm PDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 59°F
  • 41°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 6mphN 9°
  • Humidity: 79%
  • UV index: 3
  • Sunrise: 7:43 am PDT
  • Sunset: 6:08 pm PDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 59°F
  • 41°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 22%
  • Precipitation: 0"
  • Wind: 4mphNW 322°
  • Humidity: 81%
  • UV index: 2
  • Sunrise: 7:44 am PDT
  • Sunset: 6:06 pm PDT
  • ▼
During the ten-day period, primarily cloudy and occasionally mostly clear and showery weather is anticipated.
With a probability of 41%, rainfall is anticipated only on next Saturday. The precipitation will be light at 0.16".
Temperature fluctuation will be noticeable in the upcoming period. Maximum temperatures are forecasted between 55.4°F and 69.8°F, while the nighttime low will be mostly stable, as the overnight low will fall between 41°F and 44.6°F.
With the highest temperature of 69.8°F, Wednesday will be the warmest day; with the highest temperature of 55.4°F, next Saturday will be the coldest day.
Updated: Oct 17, 2026 @ 22:46:39 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Sunday, a pleasant, mostly sunny outlook is in place.

Tomorrow, the maximum temperature will be 64.4°F, while the minimum temperature will be 44.6°F.
Tomorrow, the highest temperature will be slightly warmer than the average maximum temperature in October. The lowest temperature will be in line with the average low of 41.9°F.

On Sunday, in Castle Rock, sunrise will be at 7:33 am and sunset at 6:19 pm (PDT).

Tomorrow, the daylight will last for 10h and 47min.