May weather in Riverside, CA
The average temperature in Riverside in May is 68.0°F (54.7°F–81.4°F). Average precipitation: 0.20 inches.
May is a spring month in Riverside, and is warmer than the annual average of 66.9°F. Daily temperatures swing about 26.7°F between overnight low and afternoon high. Expect about 2 days with precipitation. Daylight averages about 13h 46m. For travel, May is a comfortable month to visit.
Avg High
81.4°F
Avg Low
54.7°F
Precipitation
0.20 in
Daylight
13h 46m
May records in Riverside
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 100.0°F (1947) | 33.1°F (1915) | 1.39 in (1930) |
| May 2 | 104.0°F (1947) | 35.1°F (1913) | 0.55 in (1915) |
| May 3 | 102.9°F (2004) | 34.0°F (1904) | 0.14 in (2003) |
| May 4 | 100.0°F (1987) | 28.0°F (1982) | 0.63 in (2025) |
| May 5 | 102.9°F (1990) | 34.0°F (1950) | 0.63 in (1930) |
| May 6 | 102.9°F (1990) | 36.0°F (1950) | 0.73 in (1921) |
| May 7 | 102.9°F (1923) | 37.0°F (1933) | 0.49 in (1955) |
| May 8 | 104.0°F (1923) | 34.0°F (1950) | 0.65 in (1977) |
| May 9 | 102.9°F (1940) | 35.1°F (1950) | 0.66 in (1922) |
| May 10 | 102.9°F (1940) | 35.1°F (1922) | 0.17 in (1977) |
| May 11 | 104.0°F (1934) | 37.9°F (1905) | 0.33 in (1957) |
| May 12 | 102.9°F (1927) | 37.0°F (1953) | 0.82 in (1998) |
| May 13 | 109.0°F (1927) | 39.0°F (1953) | 0.08 in (1925) |
| May 14 | 105.1°F (1927) | 39.9°F (1918) | 0.29 in (1951) |
| May 15 | 102.9°F (2014) | 41.0°F (1902) | 0.54 in (2015) |
| May 16 | 104.0°F (1956) | 37.9°F (1908) | 0.15 in (2019) |
| May 17 | 102.9°F (1920) | 39.9°F (1908) | 0.15 in (1994) |
| May 18 | 102.9°F (2008) | 33.1°F (1988) | 0.31 in (2011) |
| May 19 | 104.0°F (1942) | 39.9°F (1903) | 0.68 in (1925) |
| May 20 | 108.0°F (1942) | 34.0°F (1989) | 0.29 in (1921) |
| May 21 | 105.1°F (2000) | 36.0°F (1948) | 0.63 in (1920) |
| May 22 | 99.0°F (1967) | 37.9°F (1903) | 1.13 in (1921) |
| May 23 | 100.9°F (2001) | 39.9°F (1902) | 0.23 in (1921) |
| May 24 | 99.0°F (1927) | 39.0°F (1916) | 0.12 in (1977) |
| May 25 | 102.0°F (1974) | 35.1°F (1916) | 0.22 in (1931) |
| May 26 | 100.9°F (1968) | 37.0°F (1953) | 0.31 in (1931) |
| May 27 | 102.0°F (2000) | 37.9°F (1953) | 0.14 in (2019) |
| May 28 | 106.0°F (1973) | 41.0°F (1917) | 0.39 in (1990) |
| May 29 | 109.9°F (1984) | 39.0°F (1953) | 0.08 in (1937) |
| May 30 | 99.0°F (1910) | 41.0°F (1906) | 0.05 in (1937) |
| May 31 | 102.9°F (1909) | 42.1°F (1911) | 0.15 in (1936) |