Riverside September 20 Weather Records

Daily averages and all-time records for weather in Riverside, California for the date of September 20.
September 20 All-Time Records
1893–2024
Highest temperature 106 °F 2015
Lowest temperature 44 °F 1925
Lowest daily high 74 °F 1988
Highest daily low 70 °F 2016
Most precipitation 0.05 inches 2005
September 20 Average Weather
1991–2020 1
Average high 90.8 °F
Average low 60.6 °F
Chance precipitation 2.2%
Riverside September 20 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 79 62 0.00 n/a
2022 87 60 0.00 n/a
2021 92 59 0.00 n/a
2020 95 63 0.00 0.0
2019 87 61 0.00 0.0
2018 91 61 0.00 0.0
2017 80 64 0.00 0.0
2016 84 70 0.00 0.0
2015 106 70 0.00 0.0
2014 82 64 0.00 0.0
2013 79 63 0.00 0.0
2012 101 65 0.00 0.0
2011 91 60 0.00 0.0
2010 89 57 0.00 n/a
2009 94 63 0.00 n/a
2008 84 60 0.00 n/a
2007 n/a n/a n/a n/a
2006 84 52 0.00 n/a
2005 81 63 0.05 n/a
2004 77 52 0.00 n/a
2003 96 57 0.00 n/a
2002 94 55 0.01 n/a
2001 87 53 0.00 n/a
2000 87 63 0.00 n/a
1999 91 50 0.00 n/a
1998 77 63 0.00 0.0
1997 88 57 0.00 0.0
1996 93 61 0.00 0.0
1995 93 61 0.00 0.0
1994 88 57 0.00 0.0
1993 n/a 58 0.00 0.0
1992 n/a n/a n/a n/a
1991 96 66 0.00 0.0
1990 82 64 0.00 0.0
1989 84 52 0.00 0.0
1988 74 60 0.05 0.0
1987 98 58 0.00 0.0
1986 78 50 0.00 0.0
1985 90 51 0.00 0.0
1984 98 67 0.00 0.0
1983 82 66 0.00 0.0
1982 91 55 0.00 0.0
1981 95 63 0.00 0.0
1980 84 56 0.00 0.0
1979 98 61 0.00 0.0
1978 84 58 0.00 0.0
1977 80 55 0.00 0.0
1976 78 63 0.00 0.0
1975 93 59 0.00 0.0
1974 91 58 0.00 0.0
1973 79 52 0.00 0.0
1972 95 51 0.00 0.0
1971 83 52 0.00 0.0
1970 86 49 0.00 0.0
1969 77 59 0.00 0.0
1968 77 54 0.00 0.0
1967 87 60 0.00 0.0
1966 87 52 0.00 0.0
1965 85 49 0.00 0.0
1964 85 49 0.00 0.0
1963 79 56 0.00 0.0
1962 96 56 0.00 0.0
1961 75 61 0.00 0.0
1960 90 57 0.00 0.0
1959 82 58 0.00 0.0
1958 99 55 0.00 0.0
1957 80 56 0.00 0.0
1956 90 55 0.00 0.0
1955 91 48 0.00 0.0
1954 99 45 0.00 0.0
1953 82 45 0.00 0.0
1952 88 66 0.01 0.0
1951 96 57 0.00 0.0
1950 96 45 0.00 0.0
1949 93 58 0.00 0.0
1948 81 50 0.00 0.0
1947 100 n/a 0.00 0.0
1946 93 57 0.00 0.0
1945 76 53 0.00 0.0
1944 80 47 0.00 0.0
1943 106 55 0.00 0.0
1942 99 47 0.00 0.0
1941 81 50 0.00 0.0
1940 83 51 0.00 0.0
1939 105 70 0.00 0.0
1938 99 60 0.00 0.0
1937 90 56 0.00 0.0
1936 95 57 0.00 0.0
1935 92 56 0.00 0.0
1934 98 56 0.00 0.0
1933 94 52 0.00 0.0
1932 78 55 0.00 0.0
1931 79 49 0.00 0.0
1930 87 49 0.00 0.0
1929 74 63 0.00 0.0
1928 102 50 0.00 0.0
1927 90 55 0.00 n/a
1926 97 45 0.00 n/a
1925 85 44 0.00 n/a
1924 80 57 0.00 n/a
1923 101 51 0.00 n/a
1922 101 58 0.00 n/a
1921 92 48 n/a n/a
1920 89 49 0.00 n/a
1919 86 55 n/a n/a
1918 92 46 0.00 n/a
1917 94 54 n/a n/a
1916 94 54 0.00 n/a
1915 90 50 0.00 n/a
1914 94 52 0.00 n/a
1913 96 59 n/a n/a
1912 101 56 0.00 n/a
1911 91 45 0.00 0.0
1910 97 46 0.00 n/a
1909 89 50 0.00 n/a
1908 79 47 0.00 n/a
1907 83 47 0.00 n/a
1906 95 48 0.00 n/a
1905 100 46 0.00 n/a
1904 86 57 0.00 n/a
1903 83 50 0.00 n/a
1902 77 53 0.00 n/a
1901 88 46 0.00 n/a
1900 n/a n/a n/a n/a
1899 n/a n/a n/a n/a
1898 n/a n/a n/a n/a
1897 n/a n/a n/a n/a
1896 n/a n/a n/a n/a
1895 84 45 n/a n/a
1894 99 50 n/a n/a
1893 86 46 n/a n/a
What's the all-time high for Riverside on 9/20?
For the date of Sep 20, the highest temperature ever reached in Riverside history is 106 °F which has happened 2 times, most recently in 2015.
Highest Temperatures in Riverside on September 20
Rank Temperature Year
1 106 °F 2015
1 106 °F 1943
3 105 °F 1939
4 102 °F 1928
5 101 °F 1922
5 101 °F 2012
5 101 °F 1912
5 101 °F 1923
9 100 °F 1947
9 100 °F 1905
What's the all-time low for Riverside on 9/20?
For the date of Sep 20, the lowest temperature ever reached in Riverside history is 44 °F which happened in 1925.
Lowest Temperatures in Riverside on September 20
Rank Temperature Year
1 44 °F 1925
2 45 °F 1895
2 45 °F 1926
2 45 °F 1953
2 45 °F 1911
2 45 °F 1950
2 45 °F 1954
8 46 °F 1918
8 46 °F 1905
8 46 °F 1901
8 46 °F 1893
8 46 °F 1910
Lowest High Temperatures in Riverside on September 20
Rank Temperature Year
1 74 °F 1929
1 74 °F 1988
3 75 °F 1961
4 76 °F 1945
5 77 °F 1968
5 77 °F 1902
5 77 °F 1969
5 77 °F 2004
5 77 °F 1998
10 78 °F 1932
10 78 °F 1976
10 78 °F 1986
What's the most it has ever rained in Riverside on 9/20?
For the date of Sep 20, the most precipitation ever recorded in Riverside history is 0.05 inches which has happened 2 times, most recently in 2005.
All-Time Most Precipitation in Riverside on September 20
Rank Precipitation Year
1 0.05 inches 1988
1 0.05 inches 2005
3 0.01 inches 2002
3 0.01 inches 1952
Weather Station Details
Years Station Coordinates
1999–2024 Riverside Municipal Airport location
1893–1998 Riverside Fire Station location
Notes
1: Daily averages are a moving average which includes 14 days before and after the date.
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