Weather on May 21
Fairfield, CA
55 Years of Data
Avg High
79°F
Avg Low
51°F
Warmest
2000
79°F avg
Coldest
2002
56°F avg
About This Date
May 21st in Fairfield, CA typically brings pleasant spring weather, with average highs around 79°F and lows near 51°F — a 28°F daily swing. Over 55 years of records, the warmest May 21st was in 2000 (79°F average), while the coldest was 2002 (56°F) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 9% of May 21st dates historically, with the wettest May 21st recording 1.55" 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 21st in Fairfield, CA? Great weather for outdoor activities.
Warming Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 89° | 52° | 70° | — | — |
| 2024 | 86° | 53° | 70° | — | — |
| 2023 | 83° | 53° | 68° | — | — |
| 2022 | 85° | 52° | 68° | — | — |
| 2021 | 75° | 53° | 64° | — | — |
| 2020 | 82° | 53° | 68° | — | — |
| 2019 | 63° | 51° | 57° | — | — |
| 2018 | 77° | 50° | 64° | — | — |
| 2017 | 94° | 58° | 76° | — | — |
| 2016 | 66° | 48° | 57° | — | — |
| 2015 | 71° | 54° | 62° | — | — |
| 2014 | 82° | 51° | 67° | — | — |
| 2013 | 92° | 57° | 74° | — | — |
| 2012 | 76° | 44° | 60° | — | — |
| 2011 | 76° | 51° | 63° | — | — |
| 2010 | 74° | 47° | 60° | — | — |
| 2009 | 78° | 49° | 63° | — | — |
| 2008 | 79° | 52° | 65° | — | — |
| 2007 | 80° | 54° | 67° | — | — |
| 2006 | 71° | 53° | 62° | 0.03" | — |
| 2005 | 75° | 48° | 62° | — | — |
| 2004 | 72° | 51° | 61° | — | — |
| 2003 | 92° | 58° | 75° | — | — |
| 2002coldest | 64° | 48° | 56° | 1.55" | — |
| 2001 | 98° | 59° | 79° | — | — |
| 2000warmest | 96° | 62° | 79° | — | — |
| 1999 | 71° | 49° | 60° | — | — |
| 1998 | 72° | 45° | 58° | — | — |
| 1997 | 76° | 54° | 65° | — | — |
| 1996 | 71° | 52° | 61° | 0.91" | — |
| 1995 | 66° | 53° | 60° | — | — |
| 1994 | 73° | 50° | 62° | — | — |
| 1993 | 76° | 54° | 65° | — | — |
| 1992 | 87° | 55° | 71° | — | — |
| 1991 | 81° | 51° | 66° | — | — |
| 1990 | 72° | 52° | 62° | 0.18" | — |
| 1989 | 71° | 46° | 59° | — | — |
| 1988 | 92° | 61° | 76° | — | — |
| 1987 | 68° | 51° | 60° | — | — |
| 1986 | 76° | 38° | 57° | — | — |
| 1985 | 88° | 47° | 67° | — | — |
| 1984 | 88° | 52° | 70° | — | — |
| 1983 | 95° | 56° | 75° | — | — |
| 1982 | 87° | 49° | 68° | — | — |
| 1981 | 80° | 47° | 63° | — | — |
| 1980 | 96° | 52° | 74° | — | — |
| 1979 | 70° | 57° | 63° | — | — |
| 1978 | 80° | 51° | 66° | — | — |
| 1977 | 77° | 50° | 64° | — | — |
| 1976 | 82° | 51° | 67° | — | — |
| 1975 | 69° | 45° | 57° | — | — |
| 1974 | 69° | 45° | 57° | — | — |
| 1973 | 71° | 50° | 61° | — | — |
| 1972 | 69° | 49° | 59° | 0.03" | — |
| 1971 | 75° | 50° | 63° | — | — |
55 years of data from FAIRFIELD