San Jacinto August 18 Weather Records

Daily averages and all-time records for weather in San Jacinto, California for the date of August 18.
August 18 All-Time Records
1893–2024
Highest temperature 112 °F 1950
Lowest temperature 45 °F 1956
Lowest daily high 76 °F 1945
Highest daily low 77 °F 2022
Most precipitation 1.37 inches 1945
Most snow none -
August 18 Average Weather
1991–2020 1
Average high 98.3 °F
Average low 63.3 °F
Chance precipitation 2.0%
Chance snow 0%
San Jacinto August 18 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 102 66 0.00 n/a
2022 98 77 0.00 n/a
2021 78 64 0.00 n/a
2020 106 76 0.07 n/a
2019 93 59 0.00 n/a
2018 97 71 0.00 n/a
2017 93 62 0.00 n/a
2016 101 67 0.00 n/a
2015 92 65 0.00 n/a
2014 100 67 0.00 n/a
2013 102 69 0.00 n/a
2012 100 74 n/a n/a
2011 98 61 0.00 n/a
2010 101 71 0.00 0.0
2009 97 56 0.00 0.0
2008 n/a n/a 0.00 0.0
2007 102 68 0.00 0.0
2006 95 57 0.00 0.0
2005 n/a n/a 0.00 0.0
2004 95 63 0.00 0.0
2003 104 47 0.00 0.0
2002 n/a n/a 0.00 0.0
2001 100 69 0.00 0.0
2000 n/a n/a 0.00 0.0
1999 100 63 0.00 0.0
1998 91 56 0.00 0.0
1997 92 57 0.00 0.0
1996 91 61 0.00 0.0
1995 96 57 0.00 0.0
1994 98 67 0.00 0.0
1993 n/a n/a 0.00 0.0
1992 104 68 0.00 0.0
1991 96 57 0.00 0.0
1990 n/a n/a 0.00 0.0
1989 n/a n/a n/a 0.0
1988 102 54 0.00 0.0
1987 90 53 0.00 0.0
1986 98 72 0.00 0.0
1985 95 53 0.00 0.0
1984 83 67 0.02 0.0
1983 86 64 0.20 0.0
1982 103 61 0.00 0.0
1981 n/a n/a n/a n/a
1980 86 56 0.00 0.0
1979 101 n/a 0.00 0.0
1978 96 50 0.00 0.0
1977 88 66 0.27 0.0
1976 85 53 0.00 0.0
1975 89 47 0.00 0.0
1974 103 52 0.00 0.0
1973 107 63 0.00 0.0
1972 89 53 0.00 0.0
1971 100 63 0.00 0.0
1970 99 67 0.00 0.0
1969 102 59 0.00 0.0
1968 n/a 56 0.00 0.0
1967 105 64 0.00 0.0
1966 101 62 0.00 0.0
1965 93 58 0.00 0.0
1964 103 65 0.00 0.0
1963 104 56 0.00 0.0
1962 107 57 0.00 0.0
1961 107 63 0.19 0.0
1960 108 57 0.00 0.0
1959 87 61 0.00 0.0
1958 95 59 0.00 0.0
1957 102 63 0.00 0.0
1956 95 45 0.00 0.0
1955 101 63 0.00 0.0
1954 96 45 0.00 0.0
1953 108 51 0.00 0.0
1952 103 53 0.00 0.0
1951 105 58 0.00 0.0
1950 112 56 0.00 0.0
1949 102 52 0.00 0.0
1948 n/a n/a n/a n/a
1947 98 56 0.00 0.0
1946 n/a n/a n/a n/a
1945 76 70 1.37 0.0
1944 95 54 0.00 0.0
1943 98 57 0.00 0.0
1942 104 70 0.00 n/a
1941 100 56 0.00 n/a
1940 98 58 0.00 n/a
1939 97 62 0.00 n/a
1938 90 n/a 0.00 0.0
1937 104 60 0.00 n/a
1936 100 62 0.00 n/a
1935 97 52 0.00 0.0
1934 99 66 0.00 n/a
1933 100 63 0.00 n/a
1932 103 60 0.00 n/a
1931 99 64 0.00 n/a
1930 96 51 0.00 n/a
1929 105 62 0.00 n/a
1928 106 59 0.00 n/a
1927 99 62 0.00 n/a
1926 96 52 0.00 n/a
1925 99 48 n/a n/a
1924 93 46 n/a n/a
1923 93 65 n/a n/a
1922 94 60 n/a n/a
1921 100 53 n/a n/a
1920 90 60 n/a n/a
1919 99 65 n/a n/a
1918 88 50 n/a n/a
1917 95 53 n/a n/a
1916 82 48 0.00 n/a
1915 106 57 0.00 n/a
1914 90 50 0.00 n/a
1913 91 50 0.00 n/a
1912 85 55 0.00 n/a
1911 105 65 0.00 n/a
1910 101 51 n/a n/a
1909 96 70 0.00 n/a
1908 105 63 0.00 n/a
1907 102 55 0.00 n/a
1906 83 65 0.00 n/a
1905 97 57 0.00 n/a
1904 78 61 0.00 n/a
1903 102 68 0.00 n/a
1902 88 48 0.00 n/a
1901 96 62 0.73 n/a
1900 82 56 n/a n/a
1899 n/a n/a n/a n/a
1898 103 57 0.00 n/a
1897 n/a n/a n/a n/a
1896 97 63 0.00 n/a
1895 99 56 0.00 n/a
1894 100 54 0.00 n/a
1893 95 52 0.00 n/a
What's the all-time high for San Jacinto on 8/18?
For the date of Aug 18, the highest temperature ever reached in San Jacinto history is 112 °F which happened in 1950.
Highest Temperatures in San Jacinto on August 18
Rank Temperature Year
1 112 °F 1950
2 108 °F 1953
2 108 °F 1960
4 107 °F 1961
4 107 °F 1962
4 107 °F 1973
7 106 °F 2020
7 106 °F 1928
7 106 °F 1915
10 105 °F 1967
10 105 °F 1929
10 105 °F 1911
10 105 °F 1908
10 105 °F 1951
What's the all-time low for San Jacinto on 8/18?
For the date of Aug 18, the lowest temperature ever reached in San Jacinto history is 45 °F which has happened 2 times, most recently in 1956.
Lowest Temperatures in San Jacinto on August 18
Rank Temperature Year
1 45 °F 1954
1 45 °F 1956
3 46 °F 1924
4 47 °F 1975
4 47 °F 2003
6 48 °F 1916
6 48 °F 1925
6 48 °F 1902
9 50 °F 1978
9 50 °F 1918
9 50 °F 1913
9 50 °F 1914
Lowest High Temperatures in San Jacinto on August 18
Rank Temperature Year
1 76 °F 1945
2 78 °F 1904
2 78 °F 2021
4 82 °F 1900
4 82 °F 1916
6 83 °F 1984
6 83 °F 1906
8 85 °F 1976
8 85 °F 1912
10 86 °F 1983
10 86 °F 1980
What's the most it has ever rained in San Jacinto on 8/18?
For the date of Aug 18, the most precipitation ever recorded in San Jacinto history is 1.37 inches which happened in 1945.
All-Time Most Precipitation in San Jacinto on August 18
Rank Precipitation Year
1 1.37 inches 1945
2 0.73 inches 1901
3 0.27 inches 1977
4 0.20 inches 1983
5 0.19 inches 1961
6 0.07 inches 2020
7 0.02 inches 1984
Weather Station Details
Years Station Coordinates
1978–2024 San Jacinto location
1893–1978 San Jacinto location
Notes
1: Daily averages are a moving average which includes 14 days before and after the date.
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