Weather on March 31
Fontana, CA
55 Years of Data
Avg High
74°F
Avg Low
48°F
Warmest
2011
75°F avg
Coldest
1977
49°F avg
About This Date
March 31st in Fontana, CA typically brings pleasant spring weather, with average highs around 74°F and lows near 48°F — a 26°F daily swing. Over 56 years of records, the warmest March 31st was in 2011 (75°F average), while the coldest was 1977 (49°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 13% of March 31st dates historically, with the wettest March 31st recording 4.42" 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 March 31st in Fontana, CA? Great weather for outdoor activities.
Warming Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 70° | 60° | 65° | 0.64" | — |
| 2025 | 69° | 53° | 61° | 0.05" | — |
| 2024 | 56° | 48° | 52° | 0.84" | — |
| 2023 | 66° | 41° | 54° | — | — |
| 2022 | 64° | 54° | 59° | — | — |
| 2021 | 87° | 59° | 73° | — | — |
| 2020 | 78° | 50° | 64° | — | — |
| 2019 | 89° | 51° | 70° | — | — |
| 2018 | 82° | 54° | 68° | — | — |
| 2017 | 71° | 48° | 60° | — | — |
| 2016 | 73° | 45° | 59° | — | — |
| 2015 | 80° | 53° | 67° | — | — |
| 2014 | 69° | 48° | 59° | — | — |
| 2013 | 72° | 52° | 62° | — | — |
| 2012 | 61° | 49° | 55° | 0.18" | — |
| 2011warmest | 93° | 57° | 75° | — | — |
| 2010 | 60° | 46° | 53° | 0.08" | — |
| 2009 | 75° | 47° | 61° | — | — |
| 2008 | 66° | 44° | 55° | — | — |
| 2007 | 82° | 50° | 66° | — | — |
| 2006 | 60° | 49° | 54° | — | — |
| 2005 | 78° | 51° | 65° | — | — |
| 2004 | 75° | 51° | 63° | — | — |
| 2003 | 87° | 54° | 70° | — | — |
| 2002 | 80° | 48° | 64° | — | — |
| 2001 | 77° | 55° | 66° | — | — |
| 2000 | 78° | 53° | 66° | — | — |
| 1999 | 59° | 47° | 53° | — | — |
| 1998 | 60° | 42° | 51° | — | — |
| 1997 | 69° | 54° | 61° | — | — |
| 1996 | 78° | 43° | 60° | — | — |
| 1995 | 80° | 35° | 58° | — | — |
| 1994 | 82° | 51° | 67° | — | — |
| 1993 | 77° | 48° | 63° | — | — |
| 1992 | 68° | 53° | 61° | — | — |
| 1991 | 78° | 45° | 61° | — | — |
| 1990 | 73° | 47° | 60° | — | — |
| 1989 | 91° | 53° | 72° | — | — |
| 1988 | 76° | 52° | 64° | — | — |
| 1987 | 89° | 44° | 67° | — | — |
| 1986 | 80° | 52° | 66° | — | — |
| 1985 | 86° | 40° | 63° | — | — |
| 1984 | 64° | 38° | 51° | — | — |
| 1983 | 73° | 45° | 59° | — | — |
| 1982 | 63° | 36° | 49° | — | — |
| 1981 | 77° | 41° | 59° | — | — |
| 1980 | 74° | 43° | 58° | — | — |
| 1979 | 73° | 38° | 55° | — | — |
| 1978 | 73° | 51° | 62° | 4.42" | — |
| 1977coldest | 62° | 36° | 49° | 0.15" | — |
| 1976 | 79° | 57° | 68° | — | — |
| 1975 | 70° | 45° | 57° | — | — |
| 1974 | 72° | 50° | 61° | — | — |
| 1973 | 59° | 47° | 53° | — | — |
| 1972 | 84° | 47° | 65° | — | — |
| 1971 | 79° | 52° | 65° | — | — |
56 years of data from FONTANA KAISER