Weather on October 20
Riverside, CA
55 Years of Data
Avg High
82°F
Avg Low
54°F
Warmest
2003
81°F avg
Coldest
1977
58°F avg
About This Date
October 20th in Riverside, CA typically brings warm fall weather, with average highs around 82°F and lows near 54°F — a 28°F daily swing. Over 55 years of records, the warmest October 20th was in 2003 (81°F average), while the coldest was 1977 (58°F) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 9% of October 20th dates historically, with the wettest October 20th recording 4.98" of rain. The last decade has been 4.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.6°F warmer on this date compared to 20-30 years ago.
Planning for October 20th in Riverside, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
1.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 88° | 53° | 70° | — | — |
| 2024 | 87° | 52° | 69° | — | — |
| 2023 | 98° | 60° | 79° | — | — |
| 2022 | 93° | 63° | 78° | — | — |
| 2021 | 79° | 47° | 63° | — | — |
| 2020 | 85° | 60° | 72° | — | — |
| 2019 | 88° | 50° | 69° | — | — |
| 2018 | 90° | 55° | 72° | — | — |
| 2017 | 75° | 60° | 68° | — | — |
| 2016 | 92° | 68° | 80° | — | — |
| 2015 | 81° | 57° | 69° | — | — |
| 2014 | 82° | 58° | 70° | — | — |
| 2013 | 84° | 51° | 68° | — | — |
| 2012 | 77° | 62° | 70° | — | — |
| 2011 | 79° | 55° | 67° | — | — |
| 2010 | 69° | 60° | 65° | 0.03" | — |
| 2009 | 76° | 53° | 64° | — | — |
| 2008 | 82° | 50° | 66° | — | — |
| 2007 | 85° | 53° | 69° | — | — |
| 2006 | 92° | 50° | 71° | — | — |
| 2005 | 81° | 50° | 65° | — | — |
| 2004 | 64° | 55° | 60° | 4.98" | — |
| 2003warmest | 102° | 60° | 81° | — | — |
| 2002 | 77° | 48° | 63° | — | — |
| 2001 | 84° | 51° | 68° | — | — |
| 2000 | 86° | 52° | 69° | — | — |
| 1999 | 96° | 51° | 74° | — | — |
| 1998 | 90° | 48° | 69° | — | — |
| 1997 | 75° | 54° | 64° | — | — |
| 1996 | 76° | 46° | 61° | — | — |
| 1995 | 88° | 52° | 70° | — | — |
| 1994 | 79° | 45° | 62° | — | — |
| 1993 | 89° | 48° | 69° | — | — |
| 1992 | 81° | 50° | 65° | — | — |
| 1991 | 97° | 54° | 75° | — | — |
| 1990 | 80° | 51° | 66° | — | — |
| 1989 | 75° | 58° | 66° | — | — |
| 1988 | 77° | 59° | 68° | — | — |
| 1987 | 76° | 51° | 63° | — | — |
| 1986 | 79° | 47° | 63° | — | — |
| 1985 | 77° | 56° | 66° | — | — |
| 1984 | 70° | 54° | 62° | — | — |
| 1983 | 79° | 57° | 68° | — | — |
| 1982 | 76° | 51° | 63° | — | — |
| 1981 | 85° | 54° | 69° | — | — |
| 1980 | 88° | 50° | 69° | — | — |
| 1979 | 66° | 54° | 60° | 2.06" | — |
| 1978 | 88° | 59° | 73° | 0.3" | — |
| 1977coldest | 64° | 51° | 58° | — | — |
| 1976 | 83° | 59° | 71° | — | — |
| 1975 | 71° | 54° | 62° | — | — |
| 1974 | 84° | 51° | 68° | — | — |
| 1973 | 94° | 51° | 72° | — | — |
| 1972 | 72° | 53° | 62° | 0.1" | — |
| 1971 | 75° | 43° | 59° | — | — |
55 years of data from RIVERSIDE CITRUS EXP