Weather forecast for 10 daysCastle Rock, CO

Weather forecast for the weekend

Sunday Oct 18, 2026

  • 72°F
  • 41°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 9mphNE 48°
  • Humidity: 19%
  • UV index: 5
  • Sunrise: 7:12 am MDT
  • Sunset: 6:16 pm MDT
  • ▼
On Sunday, in Castle Rock, sunny moments will alternate with patchy cloud cover.
Temperatures are anticipated to move from a peak of a delightful 71.6°F to a low of an icy 41°F.
Today, the maximum temperature of 71.6°F will resemble September's climate more than October's.
Sunrise was at 7:12 am and sunset will be at 6:16 pm; the daylight will last for 11h and 4min.

10-day overview

Daily temperatures

Warmest day: Wednesday 73°C.
Coldest day: Saturday 59°C.

Chance of precipitation

Highest chance: Saturday 24%.

Long-term weather forecast

  • Sunday
  • Oct 18, 2026
  • 72°F
  • 41°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 9mphNE 48°
  • Humidity: 19%
  • UV index: 5
  • Sunrise: 7:12 am MDT
  • Sunset: 6:16 pm MDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 70°F
  • 45°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 15%
  • Precipitation: 0"
  • Wind: 10mphSSE 147°
  • Humidity: 34%
  • UV index: 4
  • Sunrise: 7:13 am MDT
  • Sunset: 6:14 pm MDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 72°F
  • 46°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 8mphNNW 337°
  • Humidity: 38%
  • UV index: 4
  • Sunrise: 7:14 am MDT
  • Sunset: 6:13 pm MDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 73°F
  • 52°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 10mphSSE 168°
  • Humidity: 36%
  • UV index: 4
  • Sunrise: 7:15 am MDT
  • Sunset: 6:12 pm MDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 72°F
  • 55°F
Cloudy
Cloudy
  • Precip. probability: 17%
  • Precipitation: 0"
  • Wind: 12mphSSW 196°
  • Humidity: 44%
  • UV index: 3
  • Sunrise: 7:16 am MDT
  • Sunset: 6:10 pm MDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 72°F
  • 45°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 16mphSSW 203°
  • Humidity: 38%
  • UV index: 4
  • Sunrise: 7:17 am MDT
  • Sunset: 6:09 pm MDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 59°F
  • 43°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 24%
  • Precipitation: 0"
  • Wind: 11mphE 89°
  • Humidity: 50%
  • UV index: 4
  • Sunrise: 7:19 am MDT
  • Sunset: 6:08 pm MDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 61°F
  • 43°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 17%
  • Precipitation: 0"
  • Wind: 10mphS 180°
  • Humidity: 53%
  • UV index: 4
  • Sunrise: 7:20 am MDT
  • Sunset: 6:06 pm MDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 64°F
  • 45°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 10mphS 188°
  • Humidity: 42%
  • UV index: 3
  • Sunrise: 7:21 am MDT
  • Sunset: 6:05 pm MDT
  • ▼
  • Tuesday
  • Oct 27, 2026
  • 64°F
  • 43°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 9mphSSW 195°
  • Humidity: 40%
  • UV index: 4
  • Sunrise: 7:22 am MDT
  • Sunset: 6:04 pm MDT
  • ▼
A combination of overcast and mostly clear weather is anticipated.
Rainfall is not expected in Castle Rock in the upcoming period.
Significant changes in temperature are expected across the forecast period. The temperature is expected to swing from 59°F up to 73.4°F, while there will be also a marked difference in overnight low temperatures, as temperatures overnight will fluctuate from 41°F up to 55.4°F.
Expect the warmest day on Wednesday, with temperatures peaking at 73.4°F; with the highest temperature of 59°F, Saturday will be the coldest day.
Updated: Oct 18, 2026 @ 14:38:31 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Today, expect a mix of sun and clouds throughout the day.

Today, the maximum temperature will be 71.6°F, while the minimum temperature will be 41°F.
The highest temperature today will be significantly higher than the average maximum of 60.4°F in October. The lowest temperature today will be in line with the average low temperature.

On Sunday, in Castle Rock, sunrise was at 7:12 am and sunset will be at 6:16 pm (MDT).

In Castle Rock, the length of the day today will be 11h and 4min.