El Cajon August 18 Weather Records

Daily averages and all-time records for weather in El Cajon, California for the date of August 18.
August 18 All-Time Records
1899–2024
Highest temperature 102 °F 2020
Lowest temperature 49 °F 1949
Lowest daily high 75 °F 1906
Highest daily low 73 °F 2020
Most precipitation 0.09 inches 1983
August 18 Average Weather
1991–2020 1
Average high 89.4 °F
Average low 64.9 °F
Chance precipitation 0.9%
El Cajon August 18 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 89 61 0.00 n/a
2022 92 68 0.00 n/a
2021 80 70 0.00 n/a
2020 102 73 0.00 n/a
2019 83 63 0.00 n/a
2018 90 72 0.00 n/a
2017 84 64 0.00 n/a
2016 94 68 0.00 n/a
2015 87 71 0.00 n/a
2014 87 69 0.00 n/a
2013 87 62 0.00 n/a
2012 95 71 0.00 n/a
2011 86 62 0.00 n/a
2010 99 71 0.00 0.0
2009 84 60 0.00 0.0
2008 92 67 0.00 0.0
2007 n/a n/a n/a n/a
2006 90 62 0.00 0.0
2005 n/a n/a n/a n/a
2004 85 63 0.00 0.0
2003 93 60 0.00 0.0
2002 n/a 63 0.00 0.0
2001 94 68 0.00 0.0
2000 91 65 0.00 0.0
1999 93 62 0.00 0.0
1998 n/a n/a n/a n/a
1997 91 63 0.00 0.0
1996 n/a 67 0.00 0.0
1995 n/a n/a 0.00 0.0
1994 87 70 0.00 0.0
1993 85 63 0.00 0.0
1992 98 72 0.00 0.0
1991 86 61 0.00 0.0
1990 83 65 0.00 0.0
1989 81 64 0.00 0.0
1988 80 62 0.00 0.0
1987 78 63 0.00 0.0
1986 97 70 0.00 0.0
1985 82 64 0.00 0.0
1984 78 70 0.00 0.0
1983 76 66 0.09 0.0
1982 93 62 0.00 0.0
1981 85 67 0.00 0.0
1980 80 63 0.00 0.0
1959 81 66 0.00 0.0
1958 89 65 0.00 0.0
1957 90 66 0.00 0.0
1956 85 58 0.00 0.0
1955 94 61 0.00 0.0
1954 85 53 0.00 0.0
1953 93 55 0.00 0.0
1952 92 58 0.00 0.0
1951 90 57 0.00 0.0
1950 93 54 0.00 0.0
1949 86 49 0.00 0.0
1948 90 51 0.00 0.0
1947 87 56 0.00 0.0
1946 95 58 0.00 0.0
1945 82 68 0.00 0.0
1944 91 59 0.00 n/a
1943 88 60 0.00 n/a
1942 84 62 0.00 n/a
1941 100 59 0.00 n/a
1940 96 57 0.00 n/a
1939 92 61 0.00 n/a
1938 82 60 0.03 n/a
1937 90 57 0.00 n/a
1936 90 61 0.00 n/a
1935 88 62 0.00 n/a
1934 83 60 0.00 n/a
1933 90 68 0.00 n/a
1932 90 55 0.00 n/a
1931 90 60 0.00 n/a
1930 87 57 0.00 n/a
1929 100 63 0.00 n/a
1928 86 56 0.00 n/a
1927 88 57 0.00 n/a
1926 84 57 0.00 n/a
1925 94 58 0.00 n/a
1924 85 52 0.00 n/a
1923 84 59 n/a n/a
1922 87 61 0.00 n/a
1921 89 56 0.00 n/a
1920 80 64 0.00 n/a
1919 91 61 0.00 n/a
1918 85 54 0.00 n/a
1917 92 55 n/a n/a
1916 78 53 0.00 n/a
1915 102 53 0.00 n/a
1914 78 62 0.00 n/a
1913 85 49 0.00 n/a
1912 79 60 0.00 0.0
1911 90 59 0.00 n/a
1910 92 53 0.00 n/a
1909 92 64 0.00 n/a
1908 94 59 0.00 n/a
1907 91 55 0.00 n/a
1906 75 65 0.00 n/a
1905 84 58 0.00 n/a
1904 85 73 0.00 n/a
1903 95 65 0.00 n/a
1902 81 58 0.00 n/a
1901 87 60 n/a n/a
1900 77 57 n/a n/a
1899 78 58 0.00 0.0
What's the all-time high for El Cajon on 8/18?
For the date of Aug 18, the highest temperature ever reached in El Cajon history is 102 °F which has happened 2 times, most recently in 2020.
Highest Temperatures in El Cajon on August 18
Rank Temperature Year
1 102 °F 1915
1 102 °F 2020
3 100 °F 1929
3 100 °F 1941
5 99 °F 2010
6 98 °F 1992
7 97 °F 1986
8 96 °F 1940
9 95 °F 2012
9 95 °F 1903
9 95 °F 1946
What's the all-time low for El Cajon on 8/18?
For the date of Aug 18, the lowest temperature ever reached in El Cajon history is 49 °F which has happened 2 times, most recently in 1949.
Lowest Temperatures in El Cajon on August 18
Rank Temperature Year
1 49 °F 1949
1 49 °F 1913
3 51 °F 1948
4 52 °F 1924
5 53 °F 1910
5 53 °F 1954
5 53 °F 1916
5 53 °F 1915
9 54 °F 1950
9 54 °F 1918
Lowest High Temperatures in El Cajon on August 18
Rank Temperature Year
1 75 °F 1906
2 76 °F 1983
3 77 °F 1900
4 78 °F 1984
4 78 °F 1899
4 78 °F 1914
4 78 °F 1987
4 78 °F 1916
9 79 °F 1912
10 80 °F 1920
10 80 °F 1980
10 80 °F 1988
10 80 °F 2021
What's the most it has ever rained in El Cajon on 8/18?
For the date of Aug 18, the most precipitation ever recorded in El Cajon history is 0.09 inches which happened in 1983.
All-Time Most Precipitation in El Cajon on August 18
Rank Precipitation Year
1 0.09 inches 1983
2 0.03 inches 1938
Weather Station Details
Years Station Coordinates
1979–2024 El Cajon location
1899–1979 El Cajon 2 E location
Notes
1: Daily averages are a moving average which includes 14 days before and after the date.
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