Weather on March 20
Fontana, CA
55 Years of Data
Avg High
73°F
Avg Low
48°F
Warmest
2026
82°F avg
Coldest
1982
47°F avg
About This Date
March 20th in Fontana, CA typically brings pleasant spring weather, with average highs around 73°F and lows near 48°F — a 25°F daily swing. Over 56 years of records, the warmest March 20th was in 2026 (82°F average), while the coldest was 1982 (47°F) — a 35°F range across recorded history. Rain or other precipitation has occurred on about 23% of March 20th dates historically, with the wettest March 20th recording 2.16" 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 20th in Fontana, CA? Great weather for outdoor activities.
Warming Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026warmest | 100° | 65° | 82° | — | — |
| 2025 | 73° | 50° | 62° | — | — |
| 2024 | 75° | 52° | 63° | — | — |
| 2023 | 61° | 50° | 55° | 0.43" | — |
| 2022 | 70° | 50° | 60° | — | — |
| 2021 | 68° | 51° | 60° | — | — |
| 2020 | 63° | 48° | 55° | 0.05" | — |
| 2019 | 67° | 53° | 60° | 0.13" | — |
| 2018 | 76° | 53° | 64° | — | — |
| 2017 | 71° | 52° | 61° | — | — |
| 2016 | 79° | 50° | 64° | — | — |
| 2015 | 85° | 53° | 69° | — | — |
| 2014 | 80° | 53° | 67° | — | — |
| 2013 | 73° | 52° | 62° | — | — |
| 2012 | 69° | 42° | 56° | — | — |
| 2011 | 56° | 47° | 51° | 0.58" | — |
| 2010 | 84° | 49° | 66° | — | — |
| 2009 | 74° | 50° | 62° | — | — |
| 2008 | 72° | 47° | 59° | — | — |
| 2007 | 63° | 50° | 56° | — | — |
| 2006 | 58° | 44° | 51° | 0.51" | — |
| 2005 | 65° | 48° | 56° | 0.08" | — |
| 2004 | 91° | 50° | 71° | — | — |
| 2003 | 63° | 45° | 54° | — | — |
| 2002 | 84° | 45° | 64° | — | — |
| 2001 | 84° | 57° | 71° | — | — |
| 2000 | 66° | 51° | 59° | — | — |
| 1999 | 60° | 44° | 52° | 0.03" | — |
| 1998 | 79° | 47° | 63° | — | — |
| 1997 | 97° | 52° | 74° | — | — |
| 1996 | 88° | 49° | 68° | — | — |
| 1995 | 69° | 58° | 63° | — | — |
| 1994 | 71° | 54° | 62° | 1.52" | — |
| 1993 | 85° | 49° | 67° | — | — |
| 1992 | 66° | 52° | 59° | 0.3" | — |
| 1991 | 55° | 44° | 50° | 1.96" | — |
| 1990 | 90° | 56° | 73° | — | — |
| 1989 | 82° | 50° | 66° | — | — |
| 1988 | 91° | 45° | 68° | — | — |
| 1987 | 69° | 39° | 54° | — | — |
| 1986 | 84° | 41° | 63° | — | — |
| 1985 | 79° | 41° | 60° | — | — |
| 1984 | 90° | 46° | 68° | — | — |
| 1983 | 59° | 41° | 50° | — | — |
| 1982coldest | 63° | 32° | 47° | — | — |
| 1981 | 59° | 46° | 53° | 2.16" | — |
| 1980 | 70° | 38° | 54° | — | — |
| 1979 | 61° | 43° | 52° | 0.18" | — |
| 1978 | 69° | 46° | 58° | — | — |
| 1977 | 74° | 43° | 58° | — | — |
| 1976 | 75° | 50° | 63° | — | — |
| 1975 | 73° | 50° | 62° | — | — |
| 1974 | 61° | 52° | 56° | — | — |
| 1973 | 57° | 43° | 50° | 2.03" | — |
| 1972 | 76° | 55° | 65° | — | — |
| 1971 | 77° | 48° | 63° | — | — |
56 years of data from FONTANA KAISER