El Cajon May Weather

Averages and records for weather in El Cajon, California in the month of May.
Typical El Cajon May Weather
1991–2020
Average daily high 76.7 °F
Average daily low 56.1 °F
Average monthly precipitation 0.3 inches
Daily chance of precipitation 7.1%
El Cajon May Weather Records
1899–2024
Highest temperature 106 °F May 31, 1909
Lowest temperature 34 °F May 13, 1908
Highest daily low 67 °F May 29, 2000
Lowest daily high 52 °F May 1, 1915
Hottest average high temperature 85.1 °F 1997
Coldest average high temperature 68.2 °F 1921
Most daily precipitation 1.7 inches May 1, 1930
Most monthly precipitation 3.7 inches 1930
Note: Daily averages are a moving average which includes 14 days before and after
Day Average (°F) Record (°F)
High Low High Low
May 1 77.0 53.7 97 39
May 2 77.0 54.0 100 38
May 3 77.0 54.1 104 36
May 4 77.0 54.3 98 36
May 5 77.0 54.5 100 36
May 6 77.1 54.7 100 39
May 7 77.2 54.9 95 39
May 8 77.1 55.1 101 39
May 9 77.1 55.2 102 37
May 10 77.0 55.3 101 37
May 11 76.9 55.4 96 38
May 12 76.8 55.5 99 38
May 13 76.8 55.6 103 34
May 14 76.9 55.8 99 39
May 15 76.9 55.9 104 40
May 16 76.9 56.0 101 36
May 17 77.0 56.2 98 37
May 18 77.0 56.3 95 39
May 19 77.0 56.4 96 41
May 20 77.1 56.5 101 42
May 21 77.3 56.6 93 40
May 22 77.4 56.8 98 38
May 23 77.5 56.9 94 39
May 24 77.6 57.0 97 40
May 25 77.7 57.1 97 40
May 26 77.8 57.2 94 41
May 27 77.8 57.3 99 43
May 28 77.8 57.4 103 41
May 29 77.9 57.6 98 40
May 30 78.0 57.7 98 43
May 31 78.1 57.7 106 42
Weather Station Details
Years Station Coordinates
1979–2024 El Cajon location
1899–1979 El Cajon 2 E location