Lowest Daily High Temperatures in El Cajon History

This is a list of the coldest daily high temperatures ever recorded in El Cajon, California history from 1899–2024 based on data from the NOAA.

Lowest temperatures all-time

Record for the lowest daily high temperature in El Cajon

The lowest high temperature for a calendar day in El Cajon, California history was 42 °F which happened on Tuesday, January 11, 1949.

Rank	Temperature	Date
1	42 °F	January 11, 1949
2	45 °F	January 21, 1917
2	45 °F	January 20, 1917
4	46 °F	February 17, 1932
4	46 °F	December 30, 1915
4	46 °F	January 6, 1913
7	47 °F	January 27, 1957
7	47 °F	February 15, 1932
9	48 °F	January 29, 1957
9	48 °F	January 9, 1952
9	48 °F	January 10, 1949
9	48 °F	January 10, 1930
13	49 °F	December 21, 1990
13	49 °F	January 28, 1957
13	49 °F	January 21, 1952
13	49 °F	January 24, 1949
13	49 °F	January 13, 1949
13	49 °F	January 21, 1945
13	49 °F	January 20, 1937
13	49 °F	December 28, 1933
13	49 °F	March 11, 1922
13	49 °F	January 19, 1916