El Cajon Weather Records

El Cajon, California weather averages and records from 1899–2024 based on data made available by the NOAA.
All-Time Recorded High
The highest temperature ever recorded in El Cajon, California was 114 °F which occurred on September 5, 2020.
Highest Temperatures: All-Time By Year
All-Time Recorded Low
The lowest temperature ever recorded in El Cajon, California was 19 °F which occurred on January 8, 1913.
Lowest Temperatures: All-Time By Year
El Cajon Weather by Month
Averages based on the years 1991–2020
Month Average (°F) Record (°F) Average (inches)
High ☀️ Low 🌙 High ☀️ Low 🌙 Precipitation 💧
January 70.4 42.9 93 19 2.3
February 69.8 44.6 95 21 2.6
March 71.9 48.1 98 26 1.8
April 75.6 51.2 105 29 0.7
May 76.7 56.1 106 34 0.3
June 81.8 59.5 113 40 0.1
July 86.8 63.5 113 44 0.2
August 89.1 65.1 111 44 0.0
September 88.5 62.5 114 37 0.1
October 81.9 55.9 107 32 0.6
November 75.6 47.1 99 25 1.0
December 69.4 42.6 95 21 1.9
Entire year 78.1 53.4 114 19 11.4
More El Cajon Weather Records
1899–2024
Highest daily low 82 °F September 7, 1904
Lowest daily high 42 °F January 11, 1949
Greatest daily range
(Difference of high and low)
61 °F March 16, 1956
Greatest difference in daily high
over two conscutive days
26 °F Sep 22–23, 1947
Most daily precipitation 5.6 inches January 27, 1916
Most monthly precipitation 16.7 inches January 1916
Most yearly precipitation 28.1 inches 1941
Most yearly days with precipitation 74 1941
Earliest freeze November 1 1935
Earliest day ≥ 90 °F January 4 2012
Earliest day ≥ 100 °F April 5 1989
Latest freeze April 14 1911
Latest day ≥ 90 °F December 30 1917
Latest day ≥ 100 °F October 31 1918
Most days in a year < 32 °F 48 1956
Most days in a year ≥ 80 °F 218 1953
Most days in a year ≥ 90 °F 93 2008
Most days in a year ≥ 100 °F 18 2006
Most days in a year ≥ 110 °F 4 1955
El Cajon Weather Streaks
Most consecutive days...
With precipitation 11 days Jan 6–16, 1930
Without precipitation 198 days Apr 29 – Nov 12, 1984
High temperature ≥ 80 °F 121 days Jun 2 – Sep 30, 1946
High temperature ≥ 90 °F 26 days Aug 27 – Sep 21, 1983
High temperature ≥ 100 °F 8 days Aug 31 – Sep 7, 1955
High temperature ≥ 110 °F 3 days Aug 31 – Sep 2, 1955
El Cajon Weather by Year
More El Cajon Weather
Compare El Cajon to:
Weather Station Details
Years Station Coordinates
1979–2024 El Cajon location
1899–1979 El Cajon 2 E location