Earliest and Latest Days of 80° F in San Luis Obispo

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

Also see:

Earliest 80 degree day in San Luis Obispo?

The earliest in the year that San Luis Obispo, California had a high temperature of at least 80 °F is January 1 which happened in 1981.

Latest 80 degree day in San Luis Obispo?

The latest in the year that San Luis Obispo, California had a high temperature of at least 80 °F is December 31 which happened in 1980.

Earliest Days ≥ 80 °F

Date	Year	Temperature
January 1	1981	83 °F
January 3	2012	80 °F
January 3	2001	80 °F
January 4	2001	82 °F
January 4	1994	81 °F
January 7	2015	81 °F
January 7	2003	80 °F
January 8	2007	82 °F
January 10	1990	80 °F
January 10	1962	81 °F
January 11	1990	85 °F
January 12	2009	82 °F
January 12	1928	80 °F
January 13	2021	80 °F
January 13	2018	82 °F
January 13	2014	82 °F
January 13	2009	87 °F
January 13	1996	81 °F
January 13	1983	82 °F
January 13	1948	82 °F

Latest Days ≥ 80 °F

Date	Year	Temperature
December 31	1980	85 °F
December 30	1956	81 °F
December 29	2017	83 °F
December 29	2013	82 °F
December 29	1956	84 °F
December 28	2017	81 °F
December 28	2000	80 °F
December 28	1956	80 °F
December 28	1929	82 °F
December 27	2013	85 °F
December 27	1980	82 °F
December 26	2013	85 °F
December 26	1985	80 °F
December 26	1980	80 °F
December 26	1947	81 °F
December 25	2022	82 °F
December 25	2013	84 °F
December 25	1989	80 °F
December 25	1985	81 °F
December 25	1947	83 °F