Riverside August 15 Weather Records

Daily averages and all-time records for weather in Riverside, California for the date of August 15.
August 15 All-Time Records
1893–2024
Highest temperature 109 °F 2020
Lowest temperature 48 °F 1950
Lowest daily high 75 °F 1918
Highest daily low 75 °F 2020
Most precipitation 0.45 inches 1958
August 15 Average Weather
1991–2020 1
Average high 95.5 °F
Average low 64.3 °F
Chance precipitation 1.1%
Riverside August 15 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 102 67 0.00 n/a
2022 100 68 0.00 n/a
2021 99 70 0.00 n/a
2020 109 75 0.00 0.0
2019 102 63 0.00 0.0
2018 93 66 0.00 0.0
2017 80 63 0.00 0.0
2016 107 72 0.00 0.0
2015 108 73 0.00 0.0
2014 98 66 0.00 0.0
2013 99 65 0.00 0.0
2012 96 69 0.00 0.0
2011 95 61 0.00 n/a
2010 96 59 0.00 n/a
2009 87 62 0.00 n/a
2008 94 68 0.00 n/a
2007 n/a n/a n/a n/a
2006 86 58 0.00 n/a
2005 80 63 0.00 n/a
2004 91 64 0.00 n/a
2003 101 68 0.00 n/a
2002 89 59 0.00 n/a
2001 101 62 0.00 n/a
2000 100 68 0.00 n/a
1999 91 59 0.00 n/a
1998 97 68 0.00 0.0
1997 88 63 0.00 0.0
1996 104 74 0.00 0.0
1995 95 n/a 0.00 0.0
1994 105 72 0.00 0.0
1993 84 60 0.00 0.0
1992 104 73 0.00 0.0
1991 89 63 0.00 0.0
1990 82 66 0.00 0.0
1989 95 63 0.00 0.0
1988 94 56 0.00 0.0
1987 82 62 n/a 0.0
1986 94 56 0.00 0.0
1985 94 56 0.00 0.0
1984 94 72 0.00 0.0
1983 100 73 0.01 0.0
1982 89 57 0.00 0.0
1981 97 71 0.00 0.0
1980 85 65 0.00 0.0
1979 89 60 0.00 0.0
1978 94 60 0.00 0.0
1977 104 63 0.00 0.0
1976 79 61 0.00 0.0
1975 85 56 0.00 0.0
1974 90 58 0.00 0.0
1973 96 64 0.00 0.0
1972 85 59 0.00 0.0
1971 94 63 0.00 0.0
1970 97 65 0.00 0.0
1969 97 63 0.00 0.0
1968 85 57 0.00 0.0
1967 99 71 0.00 0.0
1966 101 65 0.00 0.0
1965 96 69 0.00 0.0
1964 87 60 0.00 0.0
1963 98 69 0.00 0.0
1962 101 64 0.00 0.0
1961 90 61 0.00 0.0
1960 92 59 0.00 0.0
1959 90 61 0.00 0.0
1958 91 66 0.45 0.0
1957 98 61 0.00 0.0
1956 95 53 0.00 0.0
1955 97 63 0.00 0.0
1954 92 52 0.00 0.0
1953 96 55 0.00 0.0
1952 95 55 0.00 0.0
1951 96 58 0.00 0.0
1950 97 48 0.00 0.0
1949 85 53 0.00 0.0
1948 90 56 0.00 0.0
1947 90 52 0.00 0.0
1946 93 53 0.00 0.0
1945 97 50 0.00 0.0
1944 93 55 0.00 0.0
1943 95 59 0.00 0.0
1942 95 55 0.00 0.0
1941 81 68 0.00 0.0
1940 87 60 0.00 0.0
1939 93 58 0.00 0.0
1938 87 60 0.00 0.0
1937 91 58 0.00 0.0
1936 99 60 0.00 0.0
1935 94 60 0.00 0.0
1934 90 53 0.00 0.0
1933 97 65 0.00 0.0
1932 84 52 0.00 0.0
1931 81 60 0.00 0.0
1930 88 61 0.00 0.0
1929 96 67 0.00 0.0
1928 90 56 0.00 0.0
1927 94 54 0.00 n/a
1926 100 56 n/a n/a
1925 100 50 n/a n/a
1924 93 58 n/a n/a
1923 97 56 n/a n/a
1922 90 58 n/a n/a
1921 93 56 n/a 0.0
1920 105 65 n/a 0.0
1919 100 53 n/a n/a
1918 75 59 0.00 n/a
1917 94 51 n/a n/a
1916 83 52 n/a n/a
1915 91 52 n/a n/a
1914 99 62 0.00 n/a
1913 91 48 0.00 n/a
1912 88 56 0.00 0.0
1911 100 52 0.00 n/a
1910 92 52 0.00 n/a
1909 89 70 n/a n/a
1908 85 56 0.00 n/a
1907 91 56 n/a n/a
1906 99 65 n/a n/a
1905 89 49 0.00 n/a
1904 95 62 0.00 n/a
1903 91 51 0.00 n/a
1902 88 48 0.00 n/a
1901 97 63 n/a 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 101 58 n/a n/a
1894 91 52 n/a n/a
1893 n/a n/a n/a n/a
What's the all-time high for Riverside on 8/15?
For the date of Aug 15, the highest temperature ever reached in Riverside history is 109 °F which happened in 2020.
Highest Temperatures in Riverside on August 15
Rank Temperature Year
1 109 °F 2020
2 108 °F 2015
3 107 °F 2016
4 105 °F 1920
4 105 °F 1994
6 104 °F 1977
6 104 °F 1996
6 104 °F 1992
9 102 °F 2019
9 102 °F 2023
What's the all-time low for Riverside on 8/15?
For the date of Aug 15, the lowest temperature ever reached in Riverside history is 48 °F which has happened 3 times, most recently in 1950.
Lowest Temperatures in Riverside on August 15
Rank Temperature Year
1 48 °F 1902
1 48 °F 1913
1 48 °F 1950
4 49 °F 1905
5 50 °F 1945
5 50 °F 1925
7 51 °F 1917
7 51 °F 1903
9 52 °F 1932
9 52 °F 1916
9 52 °F 1954
9 52 °F 1915
9 52 °F 1910
9 52 °F 1911
9 52 °F 1894
9 52 °F 1947
Lowest High Temperatures in Riverside on August 15
Rank Temperature Year
1 75 °F 1918
2 79 °F 1976
3 80 °F 2005
3 80 °F 2017
5 81 °F 1931
5 81 °F 1941
7 82 °F 1990
7 82 °F 1987
9 83 °F 1916
10 84 °F 1993
10 84 °F 1932
What's the most it has ever rained in Riverside on 8/15?
For the date of Aug 15, the most precipitation ever recorded in Riverside history is 0.45 inches which happened in 1958.
All-Time Most Precipitation in Riverside on August 15
Rank Precipitation Year
1 0.45 inches 1958
2 0.01 inches 1983
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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