Weather on March 1
Ontario, CA
55 Years of Data
Avg High
66°F
Avg Low
46°F
Warmest
2016
70°F avg
Coldest
1971
43°F avg
About This Date
March 1st in Ontario, CA typically brings mild spring weather, with average highs around 66°F and lows near 46°F. Over 42 years of records, the warmest March 1st was in 2016 (70°F average), while the coldest was 1971 (43°F) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 31% of March 1st dates historically, with the wettest March 1st recording 7.98" of rain. The last decade has been 3.8°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.8°F warmer on this date compared to 20-30 years ago.
Planning for March 1st in Ontario, CA? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Warming Trend
1.0°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 83° | 58° | 70° | — | — |
| 2025 | 59° | 51° | 55° | — | — |
| 2024 | 64° | 49° | 56° | 0.18" | — |
| 2023 | 52° | 42° | 47° | 3.76" | — |
| 2022 | 87° | 49° | 68° | — | — |
| 2021 | 74° | 39° | 56° | — | — |
| 2020 | 60° | 48° | 54° | 0.03" | — |
| 2019 | 68° | 57° | 63° | — | — |
| 2018 | 63° | 43° | 53° | — | — |
| 2017 | 72° | 39° | 55° | — | — |
| 2016warmest | 84° | 55° | 70° | — | — |
| 2015 | 58° | 49° | 53° | 0.08" | — |
| 2014 | 60° | 51° | 56° | 1.27" | — |
| 2013 | 87° | 45° | 66° | — | — |
| 2012 | 60° | 46° | 53° | — | — |
| 2011 | 67° | 38° | 52° | — | — |
| 2010 | 70° | 46° | 58° | — | — |
| 2009 | 84° | 51° | 68° | — | — |
| 2008 | 56° | 51° | 53° | — | — |
| 2007 | 62° | 34° | 48° | — | — |
| 2006 | 76° | 44° | 60° | — | — |
| 2005 | 66° | 52° | 59° | — | — |
| 2004 | 56° | 45° | 50° | 0.58" | — |
| 2003 | 60° | 44° | 52° | — | — |
| 2002 | 69° | 47° | 58° | — | — |
| 2001 | 63° | 40° | 51° | — | — |
| 2000 | 63° | 44° | 53° | — | — |
| 1999 | 77° | 47° | 62° | — | — |
| 1984 | 74° | 38° | 56° | — | — |
| 1983 | 57° | 55° | 56° | — | — |
| 1982 | 59° | 51° | 55° | 0.03" | — |
| 1981 | 54° | 47° | 50° | 1.73" | — |
| 1980 | 65° | 47° | 56° | — | — |
| 1979 | 59° | 43° | 51° | 2.29" | — |
| 1978 | 57° | 50° | 54° | 7.98" | — |
| 1977 | 66° | 41° | 54° | — | — |
| 1976 | 57° | 47° | 52° | 5.64" | — |
| 1975 | 73° | 44° | 59° | — | — |
| 1974 | 69° | 49° | 59° | 1.78" | — |
| 1973 | 61° | 42° | 51° | 0.08" | — |
| 1972 | 74° | 43° | 58° | — | — |
| 1971coldest | 55° | 31° | 43° | — | — |
42 years of data from ONTARIO INTL AP