Earliest and Latest Days of 80° F in Castle Rock

This is a list of the earliest and latest days in the year with a high temperature of at least 80 °F in Castle Rock, Colorado history. It is based on NOAA data from the years 1893–2024.

Also see:

Earliest 80 degree day in Castle Rock?

The earliest in the year that Castle Rock, Colorado had a high temperature of at least 80 °F is March 21 which happened in 1997.

Latest 80 degree day in Castle Rock?

The latest in the year that Castle Rock, Colorado had a high temperature of at least 80 °F is December 3 which happened in 2021.

Earliest Days ≥ 80 °F

Date	Year	Temperature
March 21	1997	80 °F
March 27	2022	81 °F
March 27	1971	80 °F
March 28	2022	82 °F
March 29	2022	81 °F
March 30	1893	80 °F
April 2	2012	81 °F
April 3	2011	80 °F
April 4	2021	80 °F
April 5	2021	80 °F
April 6	2021	80 °F
April 6	1991	82 °F
April 10	1977	80 °F
April 11	1899	80 °F
April 12	2023	84 °F
April 13	2023	81 °F
April 13	1982	80 °F
April 14	2006	83 °F
April 14	1992	81 °F
April 15	2017	80 °F
April 15	2002	82 °F

Latest Days ≥ 80 °F

Date	Year	Temperature
December 3	2021	82 °F
November 8	2021	82 °F
November 7	2021	83 °F
November 7	2020	80 °F
November 6	2020	80 °F
November 4	2020	81 °F
November 4	1995	85 °F
November 1	1897	80 °F
October 29	2016	83 °F
October 29	1968	82 °F
October 26	2021	88 °F
October 26	2017	83 °F
October 26	1977	83 °F
October 26	1926	80 °F
October 25	2014	80 °F
October 24	2003	83 °F
October 24	1973	81 °F
October 23	2016	81 °F
October 23	2003	81 °F
October 22	2020	86 °F
October 22	2003	80 °F
October 22	1975	81 °F
October 22	1915	81 °F