Weather on March 30
Ontario, CA
55 Years of Data
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.
| 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° | — | — |
Ontario, CA Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Ontario, CA Monthly Precipitation
Average rainfall per month, in inches.
Ontario, CA Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Ontario, CA
Ontario, CA has no months that meet our "pleasant" threshold — every season has tradeoffs.