Weather on March 16
Ontario, CA
55 Years of Data
Avg High
72°F
Avg Low
47°F
Warmest
2015
75°F avg
Coldest
1977
45°F avg
About This Date
March 16th in Ontario, CA typically brings pleasant spring weather, with average highs around 72°F and lows near 47°F — a 25°F daily swing. Over 42 years of records, the warmest March 16th was in 2015 (75°F average), while the coldest was 1977 (45°F) — a 30°F range across recorded history. Rain or other precipitation has occurred on about 14% of March 16th dates historically, with the wettest March 16th recording 1.96" 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 16th in Ontario, CA? Great weather for outdoor activities.
Warming Trend
1.1°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 94° | 56° | 75° | — | — |
| 2025 | 71° | 43° | 57° | — | — |
| 2024 | 63° | 49° | 56° | — | — |
| 2023 | 61° | 48° | 54° | — | — |
| 2022 | 76° | 50° | 63° | — | — |
| 2021 | 60° | 36° | 48° | — | — |
| 2020 | 60° | 49° | 54° | 0.66" | — |
| 2019 | 82° | 59° | 71° | — | — |
| 2018 | 61° | 46° | 53° | 0.33" | — |
| 2017 | 84° | 53° | 69° | — | — |
| 2016 | 87° | 49° | 68° | — | — |
| 2015warmest | 90° | 61° | 75° | — | — |
| 2014 | 92° | 52° | 72° | — | — |
| 2013 | 76° | 50° | 63° | — | — |
| 2012 | 58° | 50° | 54° | — | — |
| 2011 | 73° | 52° | 62° | — | — |
| 2010 | 83° | 48° | 65° | — | — |
| 2009 | 75° | 42° | 59° | — | — |
| 2008 | 62° | 40° | 51° | — | — |
| 2007 | 91° | 55° | 73° | — | — |
| 2006 | 68° | 45° | 56° | — | — |
| 2005 | 74° | 43° | 58° | — | — |
| 2004 | 92° | 50° | 71° | — | — |
| 2003 | 63° | 51° | 57° | 1.96" | — |
| 2002 | 57° | 40° | 48° | — | — |
| 2001 | 64° | 51° | 58° | — | — |
| 2000 | 74° | 51° | 62° | — | — |
| 1999 | 56° | 37° | 46° | — | — |
| 1984 | 65° | 43° | 54° | — | — |
| 1983 | 72° | 42° | 57° | — | — |
| 1982 | 52° | 44° | 48° | 0.84" | — |
| 1981 | 70° | 42° | 56° | — | — |
| 1980 | 70° | 43° | 56° | — | — |
| 1979 | 58° | 44° | 51° | — | — |
| 1978 | 85° | 48° | 66° | — | — |
| 1977coldest | 57° | 34° | 45° | 0.97" | — |
| 1976 | 80° | 50° | 65° | — | — |
| 1975 | 59° | 40° | 49° | 0.18" | — |
| 1974 | 81° | 47° | 64° | — | — |
| 1973 | 72° | 40° | 56° | — | — |
| 1972 | 85° | 46° | 65° | — | — |
| 1971 | 81° | 46° | 63° | — | — |
42 years of data from ONTARIO INTL AP