San Jose September 20 Weather Records

Daily averages and all-time records for weather in San Jose, California for the date of September 20.
September 20 All-Time Records
1893–2024
Highest temperature 100 °F 1939
Lowest temperature 40 °F 1895
Lowest daily high 68 °F 1893
Highest daily low 64 °F 1939
Most precipitation 0.02 inches 2005
September 20 Average Weather
1991–2020 1
Average high 80.2 °F
Average low 57.0 °F
Chance precipitation 3.6%
San Jose September 20 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 80 60 0.00 n/a
2022 79 58 0.00 n/a
2021 89 55 0.00 n/a
2020 91 58 0.00 n/a
2019 84 55 0.00 n/a
2018 91 54 0.00 n/a
2017 76 57 0.00 n/a
2016 81 61 0.00 n/a
2015 95 59 0.00 n/a
2014 77 62 0.00 n/a
2013 76 56 0.00 n/a
2012 72 50 0.00 n/a
2011 94 63 0.00 n/a
2010 80 59 0.00 n/a
2009 90 59 0.00 n/a
2008 73 59 0.00 n/a
2007 72 50 0.00 n/a
2006 84 53 0.00 n/a
2005 72 56 0.02 n/a
2004 73 48 0.00 n/a
2003 92 58 0.00 n/a
2002 92 63 0.00 n/a
2001 74 54 0.00 n/a
2000 95 62 0.00 n/a
1999 74 56 0.00 n/a
1998 78 55 0.00 0.0
1997 90 56 0.00 0.0
1996 88 57 0.00 0.0
1995 n/a 60 0.00 0.0
1994 81 55 0.00 0.0
1993 82 56 0.00 0.0
1992 83 55 0.00 0.0
1991 81 58 0.00 0.0
1990 97 58 0.00 0.0
1989 77 57 0.00 0.0
1988 77 52 0.00 0.0
1987 87 54 0.00 0.0
1986 74 49 0.00 0.0
1985 78 53 0.00 0.0
1984 74 61 0.00 0.0
1983 92 59 0.00 0.0
1982 80 50 0.00 0.0
1981 78 54 0.00 0.0
1980 72 51 0.00 0.0
1979 84 56 0.00 0.0
1978 82 49 0.00 0.0
1977 75 53 0.00 0.0
1976 71 57 0.00 0.0
1975 75 52 0.00 0.0
1974 74 55 0.00 0.0
1973 77 61 0.00 0.0
1972 81 48 0.00 0.0
1971 83 54 0.00 0.0
1970 74 49 0.00 0.0
1969 74 55 0.00 0.0
1968 72 47 0.00 0.0
1967 95 61 0.00 0.0
1966 78 53 0.00 0.0
1965 79 46 0.00 0.0
1964 83 57 0.00 0.0
1963 72 59 0.00 0.0
1962 79 52 0.00 0.0
1961 78 55 0.00 0.0
1960 77 52 0.00 0.0
1959 72 57 0.00 0.0
1958 89 55 0.00 0.0
1957 84 53 0.00 0.0
1956 76 57 0.00 0.0
1955 73 51 0.00 0.0
1954 86 53 0.00 0.0
1953 72 60 0.00 0.0
1952 85 58 0.00 0.0
1951 76 59 0.00 0.0
1950 87 53 0.00 0.0
1949 95 57 0.00 0.0
1948 70 56 0.00 0.0
1947 92 49 0.00 0.0
1946 91 59 0.00 0.0
1945 72 57 0.00 0.0
1944 74 46 0.00 0.0
1943 99 59 0.00 n/a
1942 75 49 0.00 0.0
1941 72 46 0.00 n/a
1940 85 53 0.00 n/a
1939 100 64 0.00 n/a
1938 79 54 0.00 n/a
1937 85 51 0.00 n/a
1936 91 55 0.00 0.0
1935 78 53 0.00 n/a
1934 78 54 0.00 n/a
1933 75 50 0.00 0.0
1932 78 56 0.00 0.0
1931 87 49 0.00 0.0
1930 73 59 0.00 n/a
1929 80 57 0.00 n/a
1928 97 50 0.00 n/a
1927 72 51 0.00 n/a
1926 71 46 0.00 n/a
1925 77 45 0.00 n/a
1924 81 43 0.00 n/a
1923 81 52 0.00 n/a
1922 75 53 0.00 n/a
1921 83 46 0.00 n/a
1920 74 50 0.00 n/a
1919 93 53 0.00 n/a
1918 74 57 0.00 n/a
1917 75 49 0.00 n/a
1916 79 50 0.00 n/a
1915 73 51 0.00 n/a
1914 78 47 0.00 n/a
1913 79 58 0.00 n/a
1912 88 56 0.00 n/a
1911 83 43 0.00 n/a
1910 77 48 0.00 n/a
1909 80 45 0.00 n/a
1908 74 56 0.00 n/a
1907 84 45 0.00 n/a
1906 78 50 0.00 n/a
1905 90 49 0.00 n/a
1904 77 51 0.00 n/a
1903 76 50 0.00 n/a
1902 n/a n/a 0.00 n/a
1901 75 57 0.00 n/a
1900 82 56 0.00 n/a
1899 n/a n/a 0.00 n/a
1898 n/a n/a n/a n/a
1897 n/a n/a n/a n/a
1896 72 50 0.00 n/a
1895 71 40 0.00 n/a
1894 88 43 0.00 n/a
1893 68 42 0.00 n/a
What's the all-time high for San Jose on 9/20?
For the date of Sep 20, the highest temperature ever reached in San Jose history is 100 °F which happened in 1939.
Highest Temperatures in San Jose on September 20
Rank Temperature Year
1 100 °F 1939
2 99 °F 1943
3 97 °F 1928
3 97 °F 1990
5 95 °F 2015
5 95 °F 1967
5 95 °F 1949
5 95 °F 2000
9 94 °F 2011
10 93 °F 1919
What's the all-time low for San Jose on 9/20?
For the date of Sep 20, the lowest temperature ever reached in San Jose history is 40 °F which happened in 1895.
Lowest Temperatures in San Jose on September 20
Rank Temperature Year
1 40 °F 1895
2 42 °F 1893
3 43 °F 1894
3 43 °F 1911
3 43 °F 1924
6 45 °F 1909
6 45 °F 1925
6 45 °F 1907
9 46 °F 1965
9 46 °F 1941
9 46 °F 1944
9 46 °F 1921
9 46 °F 1926
Lowest High Temperatures in San Jose on September 20
Rank Temperature Year
1 68 °F 1893
2 70 °F 1948
3 71 °F 1895
3 71 °F 1976
3 71 °F 1926
6 72 °F 1953
6 72 °F 1959
6 72 °F 1945
6 72 °F 1927
6 72 °F 1980
6 72 °F 2007
6 72 °F 2012
6 72 °F 1896
6 72 °F 1963
6 72 °F 2005
6 72 °F 1968
6 72 °F 1941
What's the most it has ever rained in San Jose on 9/20?
For the date of Sep 20, the most precipitation ever recorded in San Jose history is 0.02 inches which happened in 2005.
All-Time Most Precipitation in San Jose on September 20
Rank Precipitation Year
1 0.02 inches 2005
Weather Station Details
Years Station Coordinates
1999–2024 San Jose 2 location
1893–1998 San Jose location
Notes
1: Daily averages are a moving average which includes 14 days before and after the date.
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