Weather Forecast and Radar for Castle Rock, Colorado

Weather in Castle Rock, CO

Castle Rock, Colorado has a mild climate year-round. In the summertime, temperatures average between 70-90°F during the day. The hottest month is July, with an average high of 90°F and an average low of 59°F. Temperatures can occasionally reach 100°F, but this is rare. Nights are usually pleasant and cool, with temperatures dropping to the mid-50s.

In the wintertime, temperatures average between 20-40°F during the day. The coldest month is January, with an average high of 40°F and an average low of 17°F. Temperatures can occasionally dip below 0°F, but this is rare. At night, temperatures usually drop to the low-teens.

Spring and fall are pleasant seasons in Castle Rock, with temperatures averaging between 40-70°F. April has an average high of 65°F and an average low of 37°F, while October has an average high of 70°F and an average low of 41°F.

Overall, Castle Rock enjoys a mild climate year-round, with temperatures rarely reaching extreme highs or lows.

Fast Facts About Castle Rock, CO

As of 2020, the city population is 65176.

Major Cities Nearby Castle Rock, CO

This map shows the current & 7-day weather forecast, weather alerts, and weather radar for Castle Rock, Colorado.