Weather on March 17
Fontana, CA
55 Years of Data
Avg High
73°F
Avg Low
47°F
Warmest
2026
80°F avg
Coldest
2002
46°F avg
About This Date
March 17th in Fontana, CA typically brings pleasant spring weather, with average highs around 73°F and lows near 47°F — a 26°F daily swing. Over 56 years of records, the warmest March 17th was in 2026 (80°F average), while the coldest was 2002 (46°F) — a 34°F range across recorded history. Rain or other precipitation has occurred on about 18% of March 17th dates historically, with the wettest March 17th recording 6.17" of rain. The last decade has been 3.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.6°F warmer on this date compared to 20-30 years ago.
Planning for March 17th in Fontana, CA? Great weather for outdoor activities.
Warming Trend
0.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026warmest | 98° | 63° | 80° | — | — |
| 2025 | 66° | 48° | 57° | 0.08" | — |
| 2024 | 71° | 45° | 58° | — | — |
| 2023 | 69° | 44° | 57° | — | — |
| 2022 | 82° | 50° | 66° | — | — |
| 2021 | 69° | 40° | 54° | — | — |
| 2020 | 60° | 46° | 53° | — | — |
| 2019 | 87° | 51° | 69° | — | — |
| 2018 | 60° | 45° | 52° | 0.18" | — |
| 2017 | 86° | 55° | 71° | — | — |
| 2016 | 83° | 54° | 68° | — | — |
| 2015 | 84° | 57° | 71° | — | — |
| 2014 | 78° | 54° | 66° | — | — |
| 2013 | 74° | 50° | 62° | — | — |
| 2012 | 53° | 39° | 46° | 2.62" | — |
| 2011 | 71° | 52° | 61° | — | — |
| 2010 | 83° | 49° | 66° | — | — |
| 2009 | 82° | 50° | 66° | — | — |
| 2008 | 69° | 41° | 55° | — | — |
| 2007 | 83° | 48° | 65° | — | — |
| 2006 | 56° | 44° | 50° | 0.53" | — |
| 2005 | 68° | 48° | 58° | — | — |
| 2004 | 92° | 52° | 72° | — | — |
| 2003 | 65° | 47° | 56° | 0.51" | — |
| 2002coldest | 57° | 36° | 46° | 1.8" | — |
| 2001 | 73° | 46° | 60° | — | — |
| 2000 | 77° | 54° | 65° | — | — |
| 1999 | 61° | 41° | 51° | — | — |
| 1998 | 65° | 54° | 59° | — | — |
| 1997 | 74° | 48° | 61° | — | — |
| 1996 | 69° | 49° | 59° | — | — |
| 1995 | 72° | 57° | 64° | — | — |
| 1994 | 80° | 49° | 64° | — | — |
| 1993 | 75° | 57° | 66° | — | — |
| 1992 | 70° | 49° | 59° | — | — |
| 1991 | 69° | 38° | 53° | — | — |
| 1990 | 83° | 48° | 65° | — | — |
| 1989 | 72° | 49° | 60° | — | — |
| 1988 | 81° | 42° | 61° | — | — |
| 1987 | 74° | 41° | 57° | — | — |
| 1986 | 65° | 34° | 49° | 0.13" | — |
| 1985 | 76° | 41° | 58° | — | — |
| 1984 | 73° | 42° | 58° | — | — |
| 1983 | 61° | 48° | 54° | 0.99" | — |
| 1982 | 52° | 43° | 47° | 6.17" | — |
| 1981 | 70° | 44° | 57° | — | — |
| 1980 | 76° | 39° | 57° | — | — |
| 1979 | 61° | 40° | 50° | — | — |
| 1978 | 97° | 53° | 75° | — | — |
| 1977 | 63° | 43° | 53° | 0.53" | — |
| 1976 | 80° | 56° | 68° | — | — |
| 1975 | 64° | 39° | 52° | — | — |
| 1974 | 88° | 55° | 71° | — | — |
| 1973 | 67° | 44° | 55° | — | — |
| 1972 | 80° | 48° | 64° | — | — |
| 1971 | 81° | 49° | 65° | — | — |
56 years of data from FONTANA KAISER