Weather on May 20
Fairfield, CA
55 Years of Data
Avg High
78°F
Avg Low
52°F
Warmest
1983
82°F avg
Coldest
2002
55°F avg
About This Date
May 20th in Fairfield, CA typically brings pleasant spring weather, with average highs around 78°F and lows near 52°F — a 26°F daily swing. Over 55 years of records, the warmest May 20th was in 1983 (82°F average), while the coldest was 2002 (55°F) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 11% of May 20th dates historically, with the wettest May 20th recording 1.78" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for May 20th in Fairfield, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 86° | 56° | 71° | — | — |
| 2024 | 80° | 51° | 66° | — | — |
| 2023 | 75° | 52° | 63° | — | — |
| 2022 | 81° | 59° | 70° | — | — |
| 2021 | 71° | 50° | 61° | — | — |
| 2020 | 76° | 48° | 62° | — | — |
| 2019 | 67° | 45° | 56° | 0.23" | — |
| 2018 | 71° | 49° | 60° | — | — |
| 2017 | 91° | 58° | 74° | — | — |
| 2016 | 70° | 50° | 60° | — | — |
| 2015 | 70° | 52° | 61° | — | — |
| 2014 | 75° | 51° | 63° | — | — |
| 2013 | 92° | 66° | 79° | — | — |
| 2012 | 89° | 55° | 72° | — | — |
| 2011 | 79° | 49° | 64° | — | — |
| 2010 | 67° | 48° | 57° | 0.05" | — |
| 2009 | 80° | 51° | 66° | — | — |
| 2008 | 87° | 51° | 69° | — | — |
| 2007 | 80° | 54° | 67° | — | — |
| 2006 | 73° | 51° | 62° | — | — |
| 2005 | 71° | 47° | 59° | — | — |
| 2004 | 73° | 51° | 62° | — | — |
| 2003 | 91° | 56° | 73° | — | — |
| 2002coldest | 62° | 48° | 55° | 1.78" | — |
| 2001 | 97° | 54° | 75° | — | — |
| 2000 | 92° | 56° | 74° | — | — |
| 1999 | 73° | 49° | 61° | — | — |
| 1998 | 69° | 42° | 56° | — | — |
| 1997 | 88° | 58° | 73° | — | — |
| 1996 | 73° | 50° | 62° | — | — |
| 1995 | 74° | 51° | 62° | — | — |
| 1994 | 75° | 46° | 61° | — | — |
| 1993 | 74° | 57° | 65° | — | — |
| 1992 | 87° | 54° | 70° | — | — |
| 1991 | 77° | 45° | 61° | — | — |
| 1990 | 66° | 48° | 57° | 1.47" | — |
| 1989 | 71° | 48° | 60° | — | — |
| 1988 | 95° | 60° | 78° | — | — |
| 1987 | 71° | 52° | 61° | 0.18" | — |
| 1986 | 81° | 48° | 64° | — | — |
| 1985 | 87° | 48° | 68° | — | — |
| 1984 | 85° | 55° | 70° | — | — |
| 1983warmest | 90° | 74° | 82° | — | — |
| 1982 | 90° | 53° | 71° | — | — |
| 1981 | 74° | 42° | 58° | — | — |
| 1980 | 96° | 54° | 75° | — | — |
| 1979 | 72° | 53° | 62° | — | — |
| 1978 | 91° | 60° | 76° | — | — |
| 1977 | 77° | 51° | 64° | — | — |
| 1976 | 76° | 45° | 60° | — | — |
| 1975 | 76° | 50° | 63° | — | — |
| 1974 | 68° | 45° | 56° | — | — |
| 1973 | 72° | 48° | 60° | — | — |
| 1972 | 67° | 49° | 58° | 0.03" | — |
| 1971 | 75° | 47° | 61° | — | — |
55 years of data from FAIRFIELD