San Jacinto September 21 Weather Records

Daily averages and all-time records for weather in San Jacinto, California for the date of September 21.
September 21 All-Time Records
1893–2024
Highest temperature 110 °F 1928
Lowest temperature 39 °F 1924
Lowest daily high 69 °F 1961
Highest daily low 71 °F 2015
Most precipitation 0.16 inches 1999
Most snow none -
September 21 Average Weather
1991–2020 1
Average high 91.7 °F
Average low 58.4 °F
Chance precipitation 3.0%
Chance snow 0%
San Jacinto September 21 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 76 60 0.00 n/a
2022 87 58 0.00 n/a
2021 101 61 0.00 n/a
2020 95 62 0.00 n/a
2019 93 56 0.00 n/a
2018 96 60 0.00 n/a
2017 72 61 0.00 n/a
2016 80 67 0.05 n/a
2015 99 71 0.00 n/a
2014 89 60 0.00 n/a
2013 85 61 0.00 n/a
2012 102 64 0.00 n/a
2011 97 59 0.00 n/a
2010 82 53 0.00 0.0
2009 100 59 0.00 0.0
2008 83 50 0.00 0.0
2007 79 45 0.00 0.0
2006 88 52 0.00 0.0
2005 89 60 0.00 0.0
2004 85 47 0.00 0.0
2003 106 55 0.00 0.0
2002 105 59 0.00 0.0
2001 97 55 0.00 0.0
2000 80 59 0.00 0.0
1999 89 61 0.16 0.0
1998 72 59 0.00 0.0
1997 94 53 0.00 0.0
1996 n/a n/a 0.00 0.0
1995 95 57 0.00 0.0
1994 91 52 0.00 0.0
1993 81 50 0.00 0.0
1992 n/a n/a 0.00 0.0
1991 96 65 0.00 0.0
1990 84 58 0.00 0.0
1989 100 52 0.00 0.0
1988 71 50 0.00 0.0
1987 99 58 0.00 0.0
1986 85 46 0.00 0.0
1985 93 n/a 0.00 0.0
1984 85 62 0.00 0.0
1983 98 67 0.00 0.0
1982 100 53 0.00 0.0
1981 99 61 0.00 0.0
1980 83 49 0.00 0.0
1979 n/a n/a n/a n/a
1978 n/a n/a n/a n/a
1977 90 47 0.00 0.0
1976 79 62 0.00 0.0
1975 107 55 0.00 0.0
1974 100 58 0.00 0.0
1973 90 48 0.00 0.0
1972 103 50 0.00 0.0
1971 84 60 0.00 0.0
1970 89 44 0.00 0.0
1969 81 57 0.00 0.0
1968 85 53 0.00 0.0
1967 89 55 0.00 0.0
1966 103 47 0.00 0.0
1965 92 45 0.00 0.0
1964 92 53 0.00 0.0
1963 90 54 0.00 0.0
1962 100 43 0.00 0.0
1961 69 58 0.00 0.0
1960 85 51 0.00 0.0
1959 82 53 0.00 0.0
1958 101 51 0.00 0.0
1957 98 48 0.00 0.0
1956 97 47 0.00 0.0
1955 87 46 0.00 0.0
1954 102 44 0.00 0.0
1953 86 42 0.00 0.0
1952 87 60 0.00 0.0
1951 101 54 0.00 0.0
1950 88 51 0.00 0.0
1949 105 60 0.00 0.0
1948 n/a n/a n/a n/a
1947 97 55 0.00 n/a
1946 97 51 0.00 0.0
1945 77 60 0.00 0.0
1944 79 53 0.00 0.0
1943 105 59 0.00 0.0
1942 97 50 0.00 n/a
1941 80 41 0.00 n/a
1940 93 50 0.00 n/a
1939 98 65 0.00 n/a
1938 108 n/a 0.00 n/a
1937 85 52 0.00 n/a
1936 94 59 0.00 n/a
1935 93 60 0.00 0.0
1934 87 56 0.00 n/a
1933 96 44 0.00 n/a
1932 85 53 0.00 n/a
1931 95 50 0.00 n/a
1930 78 49 0.00 n/a
1929 75 60 0.00 n/a
1928 110 54 0.00 n/a
1927 101 56 0.00 n/a
1926 96 43 0.00 n/a
1925 90 40 0.00 n/a
1924 94 39 n/a n/a
1923 91 55 n/a n/a
1922 98 62 n/a n/a
1921 86 50 n/a n/a
1920 83 45 n/a n/a
1919 96 48 0.00 n/a
1918 94 57 n/a n/a
1917 93 57 n/a n/a
1916 88 50 n/a n/a
1915 95 56 0.00 n/a
1914 86 59 0.00 n/a
1913 97 64 0.00 n/a
1912 98 60 0.00 n/a
1911 92 52 0.00 0.0
1910 97 50 0.00 n/a
1909 90 50 0.00 n/a
1908 90 46 0.00 n/a
1907 92 44 0.00 n/a
1906 99 52 0.00 n/a
1905 104 54 n/a n/a
1904 70 48 0.00 n/a
1903 92 50 0.00 n/a
1902 76 46 0.00 n/a
1901 90 54 0.00 n/a
1900 84 50 0.00 n/a
1899 107 58 0.00 n/a
1898 86 44 n/a n/a
1897 95 61 0.00 n/a
1896 76 42 0.00 n/a
1895 80 49 n/a n/a
1894 103 54 0.00 n/a
1893 88 41 0.00 n/a
What's the all-time high for San Jacinto on 9/21?
For the date of Sep 21, the highest temperature ever reached in San Jacinto history is 110 °F which happened in 1928.
Highest Temperatures in San Jacinto on September 21
Rank Temperature Year
1 110 °F 1928
2 108 °F 1938
3 107 °F 1975
3 107 °F 1899
5 106 °F 2003
6 105 °F 2002
6 105 °F 1943
6 105 °F 1949
9 104 °F 1905
10 103 °F 1894
10 103 °F 1966
10 103 °F 1972
What's the all-time low for San Jacinto on 9/21?
For the date of Sep 21, the lowest temperature ever reached in San Jacinto history is 39 °F which happened in 1924.
Lowest Temperatures in San Jacinto on September 21
Rank Temperature Year
1 39 °F 1924
2 40 °F 1925
3 41 °F 1893
3 41 °F 1941
5 42 °F 1896
5 42 °F 1953
7 43 °F 1962
7 43 °F 1926
9 44 °F 1933
9 44 °F 1954
9 44 °F 1898
9 44 °F 1970
9 44 °F 1907
Lowest High Temperatures in San Jacinto on September 21
Rank Temperature Year
1 69 °F 1961
2 70 °F 1904
3 71 °F 1988
4 72 °F 1998
4 72 °F 2017
6 75 °F 1929
7 76 °F 1896
7 76 °F 2023
7 76 °F 1902
10 77 °F 1945
What's the most it has ever rained in San Jacinto on 9/21?
For the date of Sep 21, the most precipitation ever recorded in San Jacinto history is 0.16 inches which happened in 1999.
All-Time Most Precipitation in San Jacinto on September 21
Rank Precipitation Year
1 0.16 inches 1999
2 0.05 inches 2016
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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