El Cajon Weather in 1940

Historical record of El Cajon, California weather for the year 1940 based on NOAA data.
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1940 El Cajon Weather Extremes
Highest temperature 105 °F July 10
Lowest temperature 28 °F January 16
Highest daily low 63 °F August 16
Lowest daily high 58 °F February 14
Most daily precipitation 3.1 inches December 24
Total annual precipitation 18.8 inches -
Highest Temperatures in El Cajon in 1940
Rank Temperature Date
1 105 °F Jul 10
1 105 °F Apr 13
3 104 °F Oct 19
3 104 °F Oct 18
3 104 °F Jul 11
3 104 °F Jul 9
3 104 °F Apr 12
8 103 °F Jul 12
9 102 °F Jul 6
10 101 °F Oct 12
10 101 °F Aug 19
Lowest Temperatures in El Cajon in 1940
Rank Temperature Date
1 28 °F January 16
2 29 °F January 17
3 30 °F November 23
3 30 °F March 14
3 30 °F March 13
3 30 °F February 20
3 30 °F January 19
3 30 °F January 18
3 30 °F January 15
3 30 °F January 14
January 1940 El Cajon Weather
Day High (°F) Low (°F) Precip. (inches)
69 47 0.00
68 49 0.00
65 54 0.00
59 54 0.00
63 47 0.22
n/a 48 0.08
64 48 0.66
65 n/a 0.35
63 49 0.31
66 49 0.16
68 n/a 0.05
63 55 0.08
66 41 0.20
67 30 0.00
75 30 0.00
76 28 0.00
70 29 0.00
67 30 0.00
70 30 0.00
62 33 0.00
71 32 0.00
67 36 0.00
68 n/a 0.60
65 45 0.00
68 42 0.00
68 43 0.00
73 41 0.00
79 n/a 0.00
75 48 0.00
67 42 0.00
63 n/a 0.00
February 1940 El Cajon Weather
Day High (°F) Low (°F) Precip. (inches)
58 53 0.08
61 48 1.05
62 50 0.13
65 53 0.98
71 42 0.00
73 42 0.00
65 50 0.00
73 38 0.00
72 33 0.00
72 34 0.00
65 35 0.00
72 42 0.00
70 31 0.00
58 37 0.13
63 42 0.01
70 33 0.00
71 33 0.00
68 43 0.03
73 36 0.00
80 30 0.00
65 42 0.00
62 48 0.15
72 52 0.24
76 46 0.00
71 52 0.00
65 55 0.65
73 46 0.02
79 40 0.00
63 50 0.16
March 1940 El Cajon Weather
Day High (°F) Low (°F) Precip. (inches)
72 44 0.00
77 38 0.00
78 38 0.00
79 37 0.00
81 37 0.00
85 39 0.00
83 39 0.00
78 37 0.00
66 40 0.00
62 41 0.00
64 n/a 0.00
73 33 0.00
79 30 0.00
86 30 0.00
85 32 0.00
76 36 0.00
74 37 0.00
71 n/a 0.00
75 n/a 0.03
74 54 0.00
65 54 0.00
72 51 0.00
72 n/a 0.00
75 52 0.00
72 n/a 0.00
69 56 0.00
67 55 0.07
69 46 0.04
75 49 0.00
76 49 0.00
66 48 0.00
April 1940 El Cajon Weather
Day High (°F) Low (°F) Precip. (inches)
62 46 1.39
65 48 0.50
69 45 0.27
69 47 0.00
72 50 0.00
69 46 0.01
70 47 0.00
75 49 0.00
74 n/a 0.00
79 55 0.00
95 45 0.00
104 47 0.00
105 48 0.00
80 n/a 0.00
65 55 0.00
66 47 0.00
76 46 0.00
83 47 0.00
79 48 0.00
74 50 0.00
70 54 0.00
65 58 0.00
67 55 0.00
66 54 0.01
65 53 0.00
63 49 0.16
67 48 0.00
72 49 0.08
77 52 0.00
86 46 0.00
May 1940 El Cajon Weather
Day High (°F) Low (°F) Precip. (inches)
91 52 0.00
93 53 0.00
87 50 0.00
78 52 0.00
71 50 0.00
73 51 0.00
80 44 0.00
95 48 0.00
94 50 0.00
91 49 0.00
88 54 0.00
86 55 0.00
83 54 0.00
85 55 0.00
86 55 0.00
79 55 0.00
72 55 0.00
75 54 0.00
80 58 0.00
74 58 0.00
75 57 0.00
81 58 0.00
85 58 0.00
81 53 0.00
84 54 0.00
75 54 0.00
70 53 0.00
72 56 0.00
82 50 0.00
84 49 0.00
87 46 0.00
June 1940 El Cajon Weather
Day High (°F) Low (°F) Precip. (inches)
84 50 0.00
81 51 0.00
78 57 0.00
75 56 0.00
76 57 0.00
69 58 0.00
66 59 0.00
80 58 0.01
80 59 0.00
84 59 0.00
83 57 0.00
88 56 0.00
85 58 0.00
80 56 0.00
78 57 0.00
80 58 0.00
84 57 0.00
85 57 0.00
88 59 0.00
80 53 0.00
78 58 0.00
80 58 0.00
79 59 0.00
85 58 0.00
82 57 0.00
79 57 0.00
84 57 0.00
85 54 0.00
87 58 0.00
85 58 0.00
July 1940 El Cajon Weather
Day High (°F) Low (°F) Precip. (inches)
81 57 0.00
84 54 0.00
87 58 0.00
90 54 0.00
100 55 0.00
102 54 0.00
97 54 0.00
100 55 0.00
104 55 0.00
105 58 0.00
104 58 0.00
103 55 0.00
95 59 0.00
92 61 0.00
86 60 0.00
80 55 0.00
76 55 0.00
80 59 0.00
85 48 0.00
86 47 0.00
89 50 0.00
93 50 0.00
97 56 0.00
94 60 0.00
85 59 0.00
79 61 0.00
76 61 0.00
79 60 0.00
86 59 0.00
86 61 0.00
84 58 0.00
August 1940 El Cajon Weather
Day High (°F) Low (°F) Precip. (inches)
86 54 0.00
85 56 0.00
87 56 0.00
84 57 0.00
84 59 0.00
86 58 0.00
89 61 0.00
89 61 0.00
95 63 0.00
96 60 0.00
95 62 0.00
85 60 0.00
82 61 0.00
76 61 0.00
81 62 0.00
85 63 0.00
88 54 0.00
96 57 0.00
101 58 0.00
92 60 0.00
83 61 0.00
80 62 0.00
81 57 0.00
82 58 0.00
81 58 0.00
86 49 0.00
86 55 0.00
84 55 0.00
88 52 0.00
90 54 0.00
95 60 0.00
September 1940 El Cajon Weather
Day High (°F) Low (°F) Precip. (inches)
85 58 0.00
75 60 0.05
78 61 0.00
80 60 0.00
79 50 0.00
85 48 0.00
90 51 0.00
95 56 0.00
91 56 0.00
90 52 0.00
81 62 0.00
88 55 0.00
88 52 0.00
86 48 0.00
86 47 0.00
89 50 0.00
85 60 0.06
82 54 0.00
82 56 0.00
80 52 0.00
79 52 0.00
80 56 0.00
81 58 0.00
82 59 0.00
94 48 0.00
92 60 0.00
96 62 0.00
85 58 0.00
84 50 0.00
88 47 0.00
October 1940 El Cajon Weather
Day High (°F) Low (°F) Precip. (inches)
81 49 0.00
77 53 0.00
79 51 0.00
79 55 0.00
76 54 0.00
87 47 0.00
85 n/a 0.00
75 55 0.00
77 55 0.04
92 47 0.00
100 48 0.00
101 53 0.00
85 51 0.00
92 48 0.00
95 47 0.00
91 48 0.00
95 49 0.00
104 n/a 0.00
104 55 0.00
87 52 0.00
80 53 0.00
80 54 0.00
83 47 0.00
79 50 0.00
74 n/a 0.00
60 53 0.52
68 50 0.72
71 44 0.00
72 43 0.00
76 42 0.00
81 43 0.00
November 1940 El Cajon Weather
Day High (°F) Low (°F) Precip. (inches)
84 43 0.00
82 44 0.00
71 44 0.00
73 43 0.00
75 39 0.00
80 38 0.00
81 n/a 0.00
73 38 0.00
60 n/a 0.00
71 47 0.25
74 39 0.00
84 38 0.00
87 40 0.00
85 41 0.00
90 42 0.00
77 41 0.00
65 n/a 0.00
67 n/a 0.61
68 45 0.06
72 37 0.00
63 35 0.00
63 n/a 0.00
71 30 0.00
72 31 0.00
75 n/a 0.00
78 35 0.00
79 36 0.00
85 34 0.00
85 36 0.00
76 35 0.00
December 1940 El Cajon Weather
Day High (°F) Low (°F) Precip. (inches)
84 38 0.00
89 38 0.00
89 40 0.00
83 45 0.00
80 42 0.00
84 38 0.00
91 34 0.00
85 36 0.00
76 38 0.00
72 43 0.01
66 52 0.00
64 53 0.01
66 42 0.00
72 47 0.00
70 36 0.00
64 50 0.00
70 53 1.61
69 44 0.00
71 44 0.00
75 38 0.00
76 37 0.00
75 44 0.00
64 52 0.00
66 53 3.12
65 44 1.86
72 35 0.00
72 35 0.00
65 40 0.00
62 49 0.31
65 49 0.44
63 46 0.23
Weather Station Details
Years Station Coordinates
1979–2024 El Cajon location
1899–1979 El Cajon 2 E location