Weather on May 20
Riverside, CA
55 Years of Data
Avg High
80°F
Avg Low
54°F
Warmest
2000
78°F avg
Coldest
1972
54°F avg
About This Date
May 20th in Riverside, CA typically brings warm spring weather, with average highs around 80°F and lows near 54°F — a 26°F daily swing. Over 55 years of records, the warmest May 20th was in 2000 (78°F average), while the coldest was 1972 (54°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 5% of May 20th dates historically. The last decade has been 1.7°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.7°F cooler on this date compared to 20-30 years ago.
Planning for May 20th in Riverside, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 93° | 59° | 76° | — | — |
| 2024 | 73° | 54° | 63° | — | — |
| 2023 | 86° | 60° | 73° | — | — |
| 2022 | 68° | 56° | 62° | — | — |
| 2021 | 73° | 56° | 64° | — | — |
| 2020 | 80° | 51° | 66° | — | — |
| 2019 | 70° | 50° | 60° | — | — |
| 2018 | 73° | 59° | 66° | — | — |
| 2017 | 97° | 56° | 76° | — | — |
| 2016 | 73° | 60° | 67° | — | — |
| 2015 | 75° | 56° | 65° | — | — |
| 2014 | 73° | 57° | 65° | — | — |
| 2013 | 96° | 57° | 77° | — | — |
| 2012 | 96° | 54° | 75° | — | — |
| 2011 | 76° | 51° | 63° | — | — |
| 2010 | 85° | 54° | 69° | — | — |
| 2009 | 92° | 57° | 74° | — | — |
| 2008 | 80° | 61° | 70° | — | — |
| 2007 | 80° | 52° | 66° | — | — |
| 2006 | 86° | 59° | 73° | — | — |
| 2005 | 90° | 61° | 75° | — | — |
| 2004 | 77° | 54° | 65° | — | — |
| 2003 | 98° | 56° | 77° | — | — |
| 2002 | 67° | 53° | 60° | — | — |
| 2001 | 81° | 55° | 68° | — | — |
| 2000warmest | 99° | 58° | 78° | — | — |
| 1999 | 77° | 56° | 66° | — | — |
| 1998 | 76° | 48° | 62° | — | — |
| 1997 | 81° | 60° | 70° | — | — |
| 1996 | 80° | 57° | 69° | — | — |
| 1995 | 76° | 53° | 64° | — | — |
| 1994 | 79° | 48° | 63° | — | — |
| 1993 | 79° | 57° | 68° | — | — |
| 1992 | 77° | 57° | 67° | — | — |
| 1991 | 75° | 44° | 60° | — | — |
| 1990 | 74° | 54° | 64° | — | — |
| 1989 | 89° | 51° | 70° | — | — |
| 1988 | 97° | 54° | 75° | — | — |
| 1987 | 67° | 54° | 60° | — | — |
| 1986 | 87° | 51° | 69° | — | — |
| 1985 | 80° | 54° | 67° | — | — |
| 1984 | 87° | 55° | 71° | — | — |
| 1983 | 93° | 53° | 73° | — | — |
| 1982 | 78° | 51° | 65° | — | — |
| 1981 | 68° | 53° | 61° | — | — |
| 1980 | 73° | 58° | 65° | — | — |
| 1979 | 68° | 58° | 63° | 0.18" | — |
| 1978 | 97° | 55° | 76° | — | — |
| 1977 | 81° | 49° | 65° | — | — |
| 1976 | 82° | 56° | 69° | — | — |
| 1975 | 63° | 52° | 57° | 0.28" | — |
| 1974 | 67° | 41° | 54° | — | — |
| 1973 | 77° | 58° | 67° | — | — |
| 1972coldest | 61° | 48° | 54° | 0.25" | — |
| 1971 | 86° | 49° | 67° | — | — |
55 years of data from RIVERSIDE CITRUS EXP