Weather on March 17
Fontana, CA
55 Years of Data
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.
| 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° | — | — |
Fontana, CA Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Fontana, CA Monthly Precipitation
Average rainfall per month, in inches.
Fontana, CA Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Fontana, CA
Fontana, CA has no months that meet our "pleasant" threshold — every season has tradeoffs.