August weather in Riverside, CA
The average temperature in Riverside in August is 80.7°F (64.5°F–96.8°F). Average precipitation: 0.13 inches.
August is a summer month in Riverside, and is warmer than the annual average of 66.9°F. Daily temperatures swing about 32.3°F between overnight low and afternoon high. Expect about 0 days with precipitation. Daylight averages about 13h 16m. For travel, August is hot.
Avg High
96.8°F
Avg Low
64.5°F
Precipitation
0.13 in
Daylight
13h 16m
August records in Riverside
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| August 1 | 106.0°F (1946) | 50.0°F (1912) | 0.14 in (1918) |
| August 2 | 107.1°F (1918) | 50.0°F (1912) | 0.04 in (2017) |
| August 3 | 109.9°F (1918) | 46.0°F (1912) | 0.04 in (1966) |
| August 4 | 107.1°F (1913) | 46.0°F (1912) | 0.01 in (1915) |
| August 5 | 113.0°F (1997) | 46.9°F (1950) | 0.01 in (1961) |
| August 6 | 109.0°F (1983) | 42.1°F (1950) | 0.00 in (1902) |
| August 7 | 106.0°F (1970) | 45.0°F (1950) | 0.31 in (1967) |
| August 8 | 107.1°F (1998) | 46.9°F (1916) | 0.00 in (1902) |
| August 9 | 107.1°F (1917) | 44.1°F (1916) | 0.20 in (1998) |
| August 10 | 108.0°F (1915) | 48.0°F (1949) | 0.11 in (1942) |
| August 11 | 107.1°F (2000) | 42.1°F (1950) | 0.28 in (1941) |
| August 12 | 109.9°F (1933) | 46.0°F (2013) | 0.38 in (1972) |
| August 13 | 107.1°F (1933) | 48.0°F (1894) | 0.01 in (1931) |
| August 14 | 107.1°F (1933) | 48.0°F (1910) | 0.06 in (1987) |
| August 15 | 108.0°F (2015) | 48.0°F (1902) | 0.90 in (2005) |
| August 16 | 106.0°F (1992) | 41.0°F (1902) | 0.09 in (1977) |
| August 17 | 107.1°F (1992) | 45.0°F (1916) | 2.05 in (1977) |
| August 18 | 108.0°F (1950) | 46.9°F (1917) | 0.62 in (1945) |
| August 19 | 108.0°F (1915) | 44.1°F (1916) | 0.13 in (1983) |
| August 20 | 107.1°F (1940) | 41.0°F (1991) | 0.35 in (2014) |
| August 21 | 108.0°F (1982) | 46.9°F (1916) | 1.81 in (2023) |
| August 22 | 107.1°F (1969) | 46.0°F (1901) | 0.00 in (1902) |
| August 23 | 108.0°F (1926) | 46.0°F (1901) | 0.12 in (1967) |
| August 24 | 113.0°F (1926) | 46.0°F (1948) | 0.10 in (1916) |
| August 25 | 111.9°F (1926) | 46.9°F (1902) | 2.01 in (1935) |
| August 26 | 111.9°F (1944) | 48.9°F (1946) | 1.01 in (1915) |
| August 27 | 109.9°F (1981) | 39.9°F (1902) | 0.09 in (1922) |
| August 28 | 108.0°F (1981) | 45.0°F (1902) | 0.05 in (1912) |
| August 29 | 111.9°F (1998) | 45.0°F (1895) | 1.05 in (2013) |
| August 30 | 111.0°F (1998) | 45.0°F (1947) | 1.20 in (1909) |
| August 31 | 109.9°F (1911) | 46.0°F (1901) | 0.51 in (2017) |