Weather on March 11
Ontario, CA
55 Years of Data
Avg High
70°F
Avg Low
47°F
Warmest
2007
73°F avg
Coldest
2006
44°F avg
About This Date
March 11th 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 11th was in 2007 (73°F average), while the coldest was 2006 (44°F) — a 29°F range across recorded history. Rain or other precipitation has occurred on about 29% of March 11th dates historically, with the wettest March 11th recording 1.93" of rain. The last decade has been 2.2°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.2°F cooler on this date compared to 20-30 years ago.
Planning for March 11th in Ontario, CA? Great weather for outdoor activities.
Warming Trend
1.2°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 82° | 51° | 67° | — | — |
| 2025 | 60° | 50° | 55° | 0.1" | — |
| 2024 | 65° | 44° | 54° | — | — |
| 2023 | 64° | 40° | 52° | 0.41" | — |
| 2022 | 73° | 48° | 61° | — | — |
| 2021 | 56° | 41° | 48° | 0.15" | — |
| 2020 | 73° | 54° | 63° | — | — |
| 2019 | 69° | 44° | 57° | — | — |
| 2018 | 69° | 55° | 62° | — | — |
| 2017 | 85° | 50° | 67° | — | — |
| 2016 | 67° | 49° | 58° | 0.81" | — |
| 2015 | 76° | 60° | 68° | — | — |
| 2014 | 80° | 52° | 66° | — | — |
| 2013 | 79° | 45° | 62° | — | — |
| 2012 | 68° | 46° | 57° | — | — |
| 2011 | 75° | 48° | 62° | — | — |
| 2010 | 66° | 37° | 52° | — | — |
| 2009 | 62° | 43° | 52° | — | — |
| 2008 | 81° | 51° | 66° | — | — |
| 2007warmest | 94° | 52° | 73° | — | — |
| 2006coldest | 48° | 39° | 44° | 0.69" | — |
| 2005 | 81° | 49° | 65° | 0.03" | — |
| 2004 | 88° | 57° | 72° | — | — |
| 2003 | 77° | 51° | 64° | — | — |
| 2002 | 81° | 46° | 63° | — | — |
| 2001 | 55° | 47° | 51° | — | — |
| 2000 | 79° | 45° | 62° | — | — |
| 1999 | 53° | 42° | 48° | 0.05" | — |
| 1984 | 78° | 42° | 60° | — | — |
| 1983 | 64° | 55° | 60° | — | — |
| 1982 | 73° | 55° | 64° | 0.99" | — |
| 1981 | 72° | 43° | 57° | — | — |
| 1980 | 62° | 43° | 52° | 0.2" | — |
| 1979 | 79° | 47° | 63° | — | — |
| 1978 | 55° | 46° | 51° | 1.91" | — |
| 1977 | 68° | 43° | 55° | — | — |
| 1976 | 53° | 45° | 49° | 0.05" | — |
| 1975 | 53° | 42° | 48° | — | — |
| 1974 | 67° | 36° | 51° | — | — |
| 1973 | 54° | 44° | 49° | 1.93" | — |
| 1972 | 78° | 47° | 62° | — | — |
| 1971 | 65° | 40° | 52° | — | — |
42 years of data from ONTARIO INTL AP