Weather on March 23
Ontario, CA
55 Years of Data
Avg High
70°F
Avg Low
47°F
Warmest
2022
72°F avg
Coldest
1973
47°F avg
About This Date
March 23rd in Ontario, CA typically brings pleasant spring weather, with average highs around 70°F and lows near 47°F. Over 42 years of records, the warmest March 23rd was in 2022 (72°F average), while the coldest was 1973 (47°F) — a 25°F range across recorded history. Rain or other precipitation has occurred on about 19% of March 23rd dates historically, with the wettest March 23rd recording 0.58" of rain. The last decade has been 3.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.4°F warmer on this date compared to 20-30 years ago.
Planning for March 23rd in Ontario, CA? Great weather for outdoor activities.
Warming Trend
1.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 86° | 56° | 71° | — | — |
| 2025 | 78° | 50° | 64° | — | — |
| 2024 | 60° | 50° | 55° | 0.25" | — |
| 2023 | 56° | 45° | 50° | — | — |
| 2022warmest | 88° | 56° | 72° | — | — |
| 2021 | 67° | 46° | 56° | — | — |
| 2020 | 64° | 50° | 57° | 0.58" | — |
| 2019 | 69° | 51° | 60° | — | — |
| 2018 | 70° | 52° | 61° | 0.13" | — |
| 2017 | 68° | 49° | 58° | — | — |
| 2016 | 78° | 47° | 62° | — | — |
| 2015 | 72° | 54° | 63° | — | — |
| 2014 | 72° | 50° | 61° | — | — |
| 2013 | 78° | 47° | 62° | — | — |
| 2012 | 71° | 48° | 60° | — | — |
| 2011 | 63° | 41° | 52° | 0.05" | — |
| 2010 | 80° | 49° | 64° | — | — |
| 2009 | 66° | 38° | 52° | — | — |
| 2008 | 88° | 48° | 68° | — | — |
| 2007 | 73° | 53° | 63° | — | — |
| 2006 | 79° | 47° | 63° | — | — |
| 2005 | 59° | 47° | 53° | 0.03" | — |
| 2004 | 69° | 56° | 62° | — | — |
| 2003 | 73° | 48° | 61° | — | — |
| 2002 | 63° | 49° | 56° | 0.23" | — |
| 2001 | 67° | 48° | 57° | — | — |
| 2000 | 69° | 47° | 58° | — | — |
| 1999 | 60° | 46° | 53° | — | — |
| 1984 | 85° | 41° | 63° | — | — |
| 1983 | 62° | 47° | 54° | 0.51" | — |
| 1982 | 73° | 38° | 55° | — | — |
| 1981 | 72° | 52° | 62° | — | — |
| 1980 | 66° | 39° | 53° | — | — |
| 1979 | 67° | 38° | 52° | — | — |
| 1978 | 63° | 51° | 57° | 0.43" | — |
| 1977 | 69° | 49° | 59° | — | — |
| 1976 | 74° | 46° | 60° | — | — |
| 1975 | 69° | 35° | 52° | — | — |
| 1974 | 56° | 46° | 51° | — | — |
| 1973coldest | 61° | 34° | 47° | — | — |
| 1972 | 69° | 40° | 54° | — | — |
| 1971 | 71° | 43° | 57° | — | — |
42 years of data from ONTARIO INTL AP