Riverside September 15 Weather Records

Daily averages and all-time records for weather in Riverside, California for the date of September 15.
September 15 All-Time Records
1893–2024
Highest temperature 108 °F 2014
Lowest temperature 37 °F 1902
Lowest daily high 75 °F 1982
Highest daily low 74 °F 2014
Most precipitation 1.83 inches 2015
September 15 Average Weather
1991–2020 1
Average high 92.2 °F
Average low 61.7 °F
Chance precipitation 1.7%
Riverside September 15 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 82 62 0.00 n/a
2022 85 65 0.00 n/a
2021 90 57 0.00 n/a
2020 98 62 0.00 0.0
2019 100 65 0.00 0.0
2018 94 62 0.00 0.0
2017 78 64 0.00 0.0
2016 87 56 0.00 0.0
2015 82 68 1.83 0.0
2014 108 74 0.00 0.0
2013 102 66 0.00 0.0
2012 105 73 0.00 0.0
2011 87 61 0.00 0.0
2010 91 57 0.00 n/a
2009 84 58 0.00 n/a
2008 101 62 0.00 n/a
2007 n/a n/a n/a n/a
2006 76 59 0.00 n/a
2005 82 52 0.00 n/a
2004 85 62 0.00 n/a
2003 93 59 0.00 n/a
2002 98 58 0.00 n/a
2001 94 57 0.00 n/a
2000 99 62 0.00 n/a
1999 82 55 0.00 n/a
1998 n/a n/a 0.00 0.0
1997 88 70 0.10 0.0
1996 80 62 0.00 0.0
1995 104 65 0.00 0.0
1994 99 56 0.00 0.0
1993 79 62 0.00 0.0
1992 n/a n/a n/a n/a
1991 90 60 0.00 0.0
1990 94 63 0.00 0.0
1989 100 64 0.00 0.0
1988 90 57 0.00 0.0
1987 90 57 0.00 0.0
1986 81 51 0.00 0.0
1985 91 53 0.00 0.0
1984 104 68 0.03 0.0
1983 96 64 0.00 0.0
1982 75 63 0.00 0.0
1981 93 62 0.00 0.0
1980 83 51 0.00 0.0
1979 104 63 0.00 0.0
1978 82 56 0.00 0.0
1977 76 54 0.00 0.0
1976 78 64 0.00 0.0
1975 95 59 0.00 0.0
1974 90 53 0.00 0.0
1973 80 57 0.00 0.0
1972 87 52 0.00 0.0
1971 95 65 0.00 0.0
1970 86 49 0.00 0.0
1969 84 58 0.00 0.0
1968 78 55 0.00 0.0
1967 92 57 0.00 0.0
1966 98 56 0.00 0.0
1965 94 53 0.00 0.0
1964 83 55 0.00 0.0
1963 87 52 0.00 0.0
1962 88 54 0.00 0.0
1961 83 60 0.00 0.0
1960 89 62 0.00 0.0
1959 81 53 0.00 0.0
1958 102 54 0.00 0.0
1957 84 50 0.00 0.0
1956 99 51 0.00 0.0
1955 96 54 0.00 0.0
1954 89 48 0.00 0.0
1953 91 54 0.00 0.0
1952 97 49 0.00 0.0
1951 98 55 0.00 0.0
1950 79 52 0.00 0.0
1949 91 48 0.00 0.0
1948 94 58 0.00 0.0
1947 100 54 0.00 0.0
1946 95 52 0.00 0.0
1945 96 57 0.00 0.0
1944 77 60 0.00 0.0
1943 93 49 0.00 0.0
1942 100 53 0.00 0.0
1941 85 48 0.00 0.0
1940 90 51 0.00 0.0
1939 89 49 0.00 0.0
1938 100 65 0.00 0.0
1937 100 61 0.00 0.0
1936 86 50 0.00 0.0
1935 94 53 0.00 0.0
1934 101 57 0.00 0.0
1933 85 51 0.00 0.0
1932 89 53 0.00 0.0
1931 76 45 0.00 0.0
1930 90 48 0.00 0.0
1929 100 52 0.00 0.0
1928 97 53 0.00 0.0
1927 81 57 0.00 n/a
1926 82 54 0.00 n/a
1925 95 50 0.00 n/a
1924 104 57 0.00 n/a
1923 87 59 0.00 n/a
1922 104 59 0.00 n/a
1921 86 47 n/a n/a
1920 97 56 0.06 n/a
1919 99 50 n/a n/a
1918 78 63 0.00 n/a
1917 108 50 n/a n/a
1916 100 50 0.00 n/a
1915 84 43 0.00 n/a
1914 84 47 0.00 n/a
1913 108 53 n/a n/a
1912 84 50 0.00 n/a
1911 96 48 0.00 0.0
1910 90 61 0.00 n/a
1909 103 58 0.00 n/a
1908 82 54 0.00 n/a
1907 85 48 0.00 n/a
1906 77 57 0.00 n/a
1905 89 47 0.00 n/a
1904 88 59 0.00 n/a
1903 87 49 0.00 n/a
1902 84 37 0.00 n/a
1901 91 50 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 92 46 n/a n/a
1894 101 48 n/a n/a
1893 82 46 n/a n/a
What's the all-time high for Riverside on 9/15?
For the date of Sep 15, the highest temperature ever reached in Riverside history is 108 °F which has happened 3 times, most recently in 2014.
Highest Temperatures in Riverside on September 15
Rank Temperature Year
1 108 °F 1913
1 108 °F 2014
1 108 °F 1917
4 105 °F 2012
5 104 °F 1922
5 104 °F 1924
5 104 °F 1979
5 104 °F 1984
5 104 °F 1995
10 103 °F 1909
What's the all-time low for Riverside on 9/15?
For the date of Sep 15, the lowest temperature ever reached in Riverside history is 37 °F which happened in 1902.
Lowest Temperatures in Riverside on September 15
Rank Temperature Year
1 37 °F 1902
2 43 °F 1915
3 45 °F 1931
4 46 °F 1893
4 46 °F 1895
6 47 °F 1914
6 47 °F 1905
6 47 °F 1921
9 48 °F 1907
9 48 °F 1941
9 48 °F 1954
9 48 °F 1930
9 48 °F 1949
9 48 °F 1911
9 48 °F 1894
Lowest High Temperatures in Riverside on September 15
Rank Temperature Year
1 75 °F 1982
2 76 °F 1931
2 76 °F 1977
2 76 °F 2006
5 77 °F 1944
5 77 °F 1906
7 78 °F 1968
7 78 °F 1976
7 78 °F 2017
7 78 °F 1918
What's the most it has ever rained in Riverside on 9/15?
For the date of Sep 15, the most precipitation ever recorded in Riverside history is 1.83 inches which happened in 2015.
All-Time Most Precipitation in Riverside on September 15
Rank Precipitation Year
1 1.83 inches 2015
2 0.10 inches 1997
3 0.06 inches 1920
4 0.03 inches 1984
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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