Weather on March 30
Ontario, CA
55 Years of Data
Avg High
72°F
Avg Low
48°F
Warmest
2015
71°F avg
Coldest
1977
46°F avg
About This Date
March 30th in Ontario, CA typically brings pleasant spring weather, with average highs around 72°F and lows near 48°F. Over 42 years of records, the warmest March 30th was in 2015 (71°F average), while the coldest was 1977 (46°F) — a 25°F range across recorded history. Rain or other precipitation has occurred on about 17% of March 30th dates historically, with the wettest March 30th recording 3.61" of rain. The last decade has been 1.8°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.8°F cooler on this date compared to 20-30 years ago.
Planning for March 30th in Ontario, CA? Great weather for outdoor activities.
Warming Trend
1.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 82° | 59° | 71° | — | — |
| 2025 | 66° | 52° | 59° | — | — |
| 2024 | 53° | 47° | 50° | 3.61" | — |
| 2023 | 57° | 44° | 51° | 0.41" | — |
| 2022 | 72° | 48° | 60° | — | — |
| 2021 | 86° | 50° | 68° | — | — |
| 2020 | 75° | 43° | 59° | — | — |
| 2019 | 85° | 49° | 67° | — | — |
| 2018 | 88° | 52° | 70° | — | — |
| 2017 | 76° | 50° | 63° | — | — |
| 2016 | 67° | 47° | 57° | — | — |
| 2015warmest | 86° | 56° | 71° | — | — |
| 2014 | 73° | 52° | 62° | — | — |
| 2013 | 79° | 54° | 66° | — | — |
| 2012 | 72° | 50° | 61° | — | — |
| 2011 | 88° | 52° | 70° | — | — |
| 2010 | 65° | 48° | 56° | — | — |
| 2009 | 72° | 51° | 61° | — | — |
| 2008 | 64° | 44° | 54° | 0.05" | — |
| 2007 | 80° | 48° | 64° | — | — |
| 2006 | 65° | 50° | 57° | — | — |
| 2005 | 73° | 45° | 59° | — | — |
| 2004 | 84° | 53° | 69° | — | — |
| 2003 | 88° | 49° | 68° | — | — |
| 2002 | 73° | 50° | 62° | — | — |
| 2001 | 82° | 56° | 69° | — | — |
| 2000 | 71° | 49° | 60° | — | — |
| 1999 | 65° | 46° | 55° | — | — |
| 1984 | 71° | 39° | 55° | — | — |
| 1983 | 78° | 44° | 61° | — | — |
| 1982 | 59° | 42° | 51° | 1.27" | — |
| 1981 | 66° | 50° | 58° | — | — |
| 1980 | 70° | 44° | 57° | — | — |
| 1979 | 60° | 44° | 52° | 0.08" | — |
| 1978 | 63° | 53° | 58° | 0.25" | — |
| 1977coldest | 57° | 35° | 46° | — | — |
| 1976 | 77° | 42° | 60° | — | — |
| 1975 | 71° | 40° | 55° | — | — |
| 1974 | 65° | 47° | 56° | 0.05" | — |
| 1973 | 62° | 39° | 51° | — | — |
| 1972 | 74° | 38° | 56° | — | — |
| 1971 | 82° | 50° | 66° | — | — |
42 years of data from ONTARIO INTL AP