Earliest and Latest Days at or Below 32° F in Vacaville

This is a list of the earliest and latest days in a winter season where the low temperature fell to at least 32 °F in Vacaville, California history. It is based on NOAA data from the years 1893–2024.

Earliest freezing temperature in Vacaville?

The earliest in a winter season that Vacaville, California has recorded a low temperature of 32 °F or below is September 19 which happened in 1926.

Latest freezing temperature in Vacaville?

The latest in a winter season that Vacaville, California has recorded a low temperature of 32 °F or below is May 18 which happened in 1974.

Earliest Days ≤ 32 °F

Date	Year	Temperature
September 19	1926	32 °F
October 7	1941	32 °F
October 11	1924	31 °F
October 12	1924	31 °F
October 14	1928	32 °F
October 18	1905	32 °F
October 19	1905	32 °F
October 20	1949	32 °F
October 20	1920	32 °F
October 21	1932	32 °F
October 24	1956	32 °F
October 24	1935	32 °F
October 24	1921	32 °F
October 24	1912	31 °F
October 25	1919	32 °F
October 26	1939	32 °F
October 26	1923	31 °F
October 26	1919	28 °F
October 27	1923	30 °F
October 28	1946	27 °F
October 28	1919	31 °F

Latest Days ≤ 32 °F

Date	Year	Temperature
May 18	1974	32 °F
May 9	1933	30 °F
May 2	1921	30 °F
May 1	1920	32 °F
April 30	1933	29 °F
April 30	1923	31 °F
April 30	1913	31 °F
April 29	1967	32 °F
April 29	1942	32 °F
April 28	1970	32 °F
April 28	1967	31 °F
April 28	1913	30 °F
April 27	1970	31 °F
April 27	1936	32 °F
April 26	1932	32 °F
April 24	1964	32 °F
April 23	1972	31 °F
April 23	1947	30 °F
April 23	1924	31 °F
April 23	1923	32 °F
April 23	1920	32 °F