A DRIVE AROUND TOWN
Castle Rock - Colorado - 4K Downtown Drive
Castle Rock - Colorado - 4K Downtown Drive. A film shared by Mileage Mike Travels.
Watch on YouTube ↗
Weather · September
Castle Rock weather in September
Average highs of 77°F, lows of 47°F and 1.4 in of rain, from 30 years of weather records.
September is Castle Rock’s 4th warmest month, with average highs of 77°F and lows of 47°F. That is 7° cooler than August, and 13° above the yearly average high.
- Average high
- 77°F
- Average low
- 47°F
- Precipitation
- 1.4 in
- Wet days
- 6
- Sunrise · sunset
- 6:40 AM · 7:09 PM
September across the year
High and low Rain
What to wear in September
- Warm days: shorts and T-shirts, with a light layer for cooler evenings.
September is good for
What’s on in Castle Rock in September
See all upcoming events and school days off.
See Castle Rock
A look around town before you go.
THINGS TO DO · YOUTUBE SHORT
Hiking up to the Rock
The short climb in Rock Park toward the butte that gives the town its name, with views over downtown. A Short shared by Espi Agency | Colorado Real Estate.
Watch on YouTube ↗September compared with the months around it
Planning a trip? See the best time to visit Castle Rock and today’s forecast.
Questions
How hot does it get in Castle Rock in September?
Average highs are 77°F and average lows 47°F, for a daily mean of 62°F. Individual days run hotter or colder than these 30-year averages.
Does it rain in Castle Rock in September?
September averages 1.4 in of precipitation over about 6 days with at least 0.01 in. It is the 7th wettest month of the year.
What time is sunset in Castle Rock in September?
Around mid-September the sun rises about 6:40 AM and sets about 7:09 PM, for roughly 12.5 hours of daylight.
Is September a good time to visit Castle Rock?
Yes. September is one of the mildest months, with highs between 65°F and 85°F and little rain.
NOAA U.S. Climate Normals 1991–2020, Castle Rock station (3.8 mi from downtown). Sunrise and sunset are calculated for September 15 at the city’s coordinates.