Weather on March 22
Ontario, CA
55 Years of Data
Avg High
71°F
Avg Low
48°F
Warmest
2026
74°F avg
Coldest
1973
46°F avg
About This Date
March 22nd in Ontario, CA typically brings pleasant spring weather, with average highs around 71°F and lows near 48°F. Over 42 years of records, the warmest March 22nd was in 2026 (74°F average), while the coldest was 1973 (46°F) — a 28°F range across recorded history. Rain or other precipitation has occurred on about 26% of March 22nd dates historically, with the wettest March 22nd recording 2.01" of rain. The last decade has been 1.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.6°F warmer on this date compared to 20-30 years ago.
Planning for March 22nd in Ontario, CA? Great weather for outdoor activities.
Warming Trend
1.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026warmest | 87° | 61° | 74° | — | — |
| 2025 | 75° | 51° | 63° | — | — |
| 2024 | 73° | 51° | 62° | — | — |
| 2023 | 58° | 44° | 51° | 1.8" | — |
| 2022 | 88° | 54° | 71° | — | — |
| 2021 | 69° | 42° | 56° | — | — |
| 2020 | 68° | 47° | 57° | 1.65" | — |
| 2019 | 69° | 50° | 60° | — | — |
| 2018 | 64° | 54° | 59° | 1.22" | — |
| 2017 | 69° | 53° | 61° | — | — |
| 2016 | 71° | 53° | 62° | — | — |
| 2015 | 73° | 55° | 64° | — | — |
| 2014 | 70° | 54° | 62° | — | — |
| 2013 | 75° | 48° | 62° | — | — |
| 2012 | 77° | 49° | 63° | — | — |
| 2011 | 60° | 44° | 52° | 0.05" | — |
| 2010 | 73° | 52° | 62° | — | — |
| 2009 | 61° | 45° | 53° | 0.51" | — |
| 2008 | 87° | 47° | 67° | — | — |
| 2007 | 82° | 58° | 70° | — | — |
| 2006 | 70° | 40° | 55° | — | — |
| 2005 | 65° | 50° | 57° | 2.01" | — |
| 2004 | 87° | 51° | 69° | — | — |
| 2003 | 78° | 49° | 63° | — | — |
| 2002 | 73° | 46° | 60° | — | — |
| 2001 | 63° | 51° | 57° | — | — |
| 2000 | 72° | 43° | 57° | — | — |
| 1999 | 69° | 43° | 56° | — | — |
| 1984 | 80° | 48° | 64° | — | — |
| 1983 | 57° | 47° | 52° | 0.91" | — |
| 1982 | 70° | 37° | 53° | — | — |
| 1981 | 64° | 48° | 56° | — | — |
| 1980 | 63° | 38° | 50° | — | — |
| 1979 | 63° | 45° | 54° | 0.2" | — |
| 1978 | 61° | 52° | 56° | 1.98" | — |
| 1977 | 79° | 46° | 62° | — | — |
| 1976 | 85° | 46° | 65° | — | — |
| 1975 | 56° | 47° | 51° | 1.93" | — |
| 1974 | 57° | 47° | 52° | — | — |
| 1973coldest | 57° | 36° | 46° | 1.32" | — |
| 1972 | 73° | 41° | 57° | — | — |
| 1971 | 73° | 40° | 56° | — | — |
42 years of data from ONTARIO INTL AP