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El Cajon Weather Records

El Cajon, California weather data and records from 1899–2022 based on data compiled by the NOAA.
All data displayed in U.S. customary units.
All data displayed in metric units.
All-Time Recorded High
The highest temperature ever recorded in El Cajon, California was 114.1 °F45.6 °C 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 19.0 °F-7.2 °C which occurred on January 8, 1913.
Lowest Temperatures: All-Time By Year
El Cajon Weather by Month
Averages based on the years 1991–2020
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Year
☀️ Average high (°F°C) 70.421.3 69.821.0 71.922.1 75.624.2 76.724.8 81.827.7 86.830.4 89.131.7 88.531.4 81.927.7 75.624.2 69.420.8 78.125.6
🌙 Average low (°F°C) 42.96.1 44.67.0 48.18.9 51.210.6 56.113.4 59.515.3 63.517.5 65.118.4 62.517.0 55.913.3 47.28.4 42.65.9 53.411.9
☀️ Record high (°F°C) 93.033.9 95.035.0 98.136.7 105.140.6 106.041.1 113.045.0 113.045.0 111.043.9 114.145.6 107.141.7 99.037.2 95.035.0 114.145.6
🌙 Record low (°F°C) 19.0-7.2 21.0-6.1 26.1-3.3 28.9-1.7 34.01.1 39.94.4 44.16.7 44.16.7 37.02.8 32.00.0 25.0-3.9 21.0-6.1 19.0-7.2
💧 Average precipitation (inchescm) 2.35.9 2.66.5 1.94.8 0.81.9 0.30.8 0.10.2 0.20.4 0.00.1 0.10.2 0.41.1 1.12.9 2.15.3 12.130.7
💧 Daily % chance precipitation 18.1 24.5 17.3 11.7 7.3 1.9 1.8 1.4 1.8 6.0 12.4 18.3 10.7
More El Cajon Weather Records
1899–2022
Highest daily low 82.0 °F27.8 °C September 7, 1904
Lowest daily high 42.1 °F5.6 °C January 11, 1949
Most daily precipitation 5.6 inches14.2 cm January 27, 1916
Most monthly precipitation 16.7 inches42.4 cm January 1916
Most yearly precipitation 28.1 inches71.5 cm 1941
Earliest freeze November 1 1935
Latest freeze April 14 1911
El Cajon Weather Streaks
Most consecutive days...
With precipitation 15 days Feb 15–29, 2000
Without precipitation 191 days May 6 – Nov 12, 1984
High temperature ≥ 80 °F27 °C 104 days Jun 12 – Sep 23, 1917
High temperature ≥ 90 °F32 °C 17 days Aug 12–28, 2020
High temperature ≥ 100 °F38 °C 8 days Aug 31 – Sep 7, 1955
El Cajon Weather by Year
More
Weather Station Details
Years Station Coordinates
1979–2022 El Cajon location
1899–1979 El Cajon 2 E location