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

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 Riverside, California history. It is based on NOAA data from the years 1893–2024.

Earliest freezing temperature in Riverside?

The earliest in a winter season that Riverside, California has recorded a low temperature of 32 °F or below is October 21 which happened in 1949.

Latest freezing temperature in Riverside?

The latest in a winter season that Riverside, California has recorded a low temperature of 32 °F or below is April 28 which happened in 1894.

Earliest Days ≤ 32 °F

Date	Year	Temperature
October 21	1949	32 °F
October 23	1949	32 °F
October 23	1906	31 °F
October 30	1971	30 °F
October 31	1971	31 °F
October 31	1935	31 °F
November 4	1956	32 °F
November 4	1946	31 °F
November 4	1935	27 °F
November 4	1922	29 °F
November 5	1946	32 °F
November 5	1935	32 °F
November 5	1922	31 °F
November 6	1935	31 °F
November 6	1925	32 °F
November 6	1922	32 °F
November 7	1933	32 °F
November 7	1918	31 °F
November 8	1918	31 °F
November 9	1936	32 °F
November 9	1918	31 °F

Latest Days ≤ 32 °F

Date	Year	Temperature
April 28	1894	30 °F
April 22	1932	31 °F
April 15	1913	32 °F
April 13	1894	31 °F
April 12	1953	31 °F
April 11	1953	30 °F
April 10	1953	30 °F
April 10	1929	32 °F
April 10	1922	32 °F
April 9	1953	31 °F
April 7	1929	30 °F
April 6	1922	32 °F
April 6	1921	32 °F
April 5	1955	32 °F
April 5	1945	32 °F
April 4	1970	29 °F
April 4	1945	31 °F
April 2	1999	32 °F
April 2	1906	31 °F
March 30	1949	30 °F
March 30	1938	32 °F