Weather on May 27
Fontana, CA
55 Years of Data
Avg High
81°F
Avg Low
55°F
Warmest
2020
80°F avg
Coldest
1980
58°F avg
About This Date
May 27th in Fontana, CA typically brings warm spring weather, with average highs around 81°F and lows near 55°F — a 26°F daily swing. Over 55 years of records, the warmest May 27th was in 2020 (80°F average), while the coldest was 1980 (58°F) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 5% of May 27th dates historically. 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 27th in Fontana, CA? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 84° | 60° | 72° | — | — |
| 2024 | 80° | 53° | 67° | — | — |
| 2023 | 74° | 56° | 65° | — | — |
| 2022 | 80° | 55° | 68° | — | — |
| 2021 | 82° | 58° | 70° | — | — |
| 2020warmest | 95° | 64° | 80° | — | — |
| 2019 | 68° | 51° | 60° | — | — |
| 2018 | 78° | 53° | 66° | — | — |
| 2017 | 79° | 56° | 67° | — | — |
| 2016 | 82° | 54° | 68° | — | — |
| 2015 | 79° | 58° | 68° | — | — |
| 2014 | 92° | 62° | 77° | — | — |
| 2013 | 82° | 57° | 70° | — | — |
| 2012 | 80° | 48° | 64° | — | — |
| 2011 | 81° | 54° | 67° | — | — |
| 2010 | 71° | 56° | 63° | — | — |
| 2009 | 85° | 57° | 71° | — | — |
| 2008 | 73° | 49° | 61° | — | — |
| 2007 | 82° | 55° | 69° | — | — |
| 2006 | 70° | 56° | 63° | — | — |
| 2005 | 80° | 56° | 68° | — | — |
| 2004 | 76° | 53° | 64° | — | — |
| 2003 | 97° | 59° | 78° | — | — |
| 2002 | 77° | 54° | 65° | — | — |
| 2001 | 68° | 59° | 64° | 0.03" | — |
| 2000 | 99° | 59° | 79° | — | — |
| 1999 | 85° | 57° | 71° | — | — |
| 1998 | 73° | 46° | 60° | — | — |
| 1997 | 96° | 60° | 78° | — | — |
| 1996 | 74° | 53° | 63° | — | — |
| 1995 | 77° | 54° | 65° | — | — |
| 1994 | 83° | 53° | 68° | — | — |
| 1993 | 82° | 54° | 68° | — | — |
| 1992 | 83° | 62° | 72° | — | — |
| 1991 | 73° | 55° | 64° | — | — |
| 1990 | 77° | 53° | 65° | — | — |
| 1989 | 84° | 55° | 70° | — | — |
| 1988 | 81° | 56° | 68° | — | — |
| 1987 | 69° | 55° | 62° | — | — |
| 1986 | 91° | 54° | 72° | — | — |
| 1985 | 79° | 51° | 65° | — | — |
| 1984 | 98° | 55° | 77° | — | — |
| 1983 | 96° | 58° | 77° | — | — |
| 1982 | 65° | 57° | 61° | — | — |
| 1981 | 77° | 58° | 67° | 0.08" | — |
| 1980coldest | 67° | 50° | 58° | — | — |
| 1979 | 75° | 58° | 66° | — | — |
| 1978 | 75° | 44° | 60° | — | — |
| 1977 | 82° | 50° | 66° | — | — |
| 1976 | 87° | 55° | 71° | — | — |
| 1975 | 78° | 53° | 66° | — | — |
| 1974 | 97° | 61° | 79° | — | — |
| 1973 | 92° | 59° | 75° | — | — |
| 1972 | 90° | 54° | 72° | — | — |
| 1971 | 71° | 51° | 61° | 0.15" | — |
55 years of data from FONTANA KAISER