Weather on December 27
Ontario, CA
55 Years of Data
Avg High
63°F
Avg Low
41°F
Warmest
2013
62°F avg
Coldest
1971
41°F avg
About This Date
December 27th in Ontario, CA typically brings mild winter weather, with average highs around 63°F and lows near 41°F. Over 41 years of records, the warmest December 27th was in 2013 (62°F average), while the coldest was 1971 (41°F) — a 21°F range across recorded history. Rain or other precipitation has occurred on about 15% of December 27th dates historically, with the wettest December 27th recording 5.05" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for December 27th in Ontario, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 60° | 45° | 52° | — | — |
| 2024 | 60° | 47° | 53° | — | — |
| 2023 | 67° | 47° | 57° | — | — |
| 2022 | 65° | 50° | 57° | 0.46" | — |
| 2021 | 51° | 39° | 45° | 2.67" | — |
| 2020 | 63° | 46° | 54° | — | — |
| 2019 | 60° | 40° | 50° | — | — |
| 2018 | 61° | 41° | 51° | — | — |
| 2017 | 80° | 45° | 62° | — | — |
| 2016 | 70° | 36° | 53° | — | — |
| 2015 | 60° | 33° | 47° | — | — |
| 2014 | 60° | 40° | 50° | — | — |
| 2013warmest | 81° | 43° | 62° | — | — |
| 2012 | 58° | 40° | 49° | — | — |
| 2011 | 70° | 36° | 53° | — | — |
| 2010 | 65° | 38° | 51° | — | — |
| 2009 | 60° | 35° | 48° | — | — |
| 2008 | 56° | 33° | 44° | — | — |
| 2007 | 54° | 35° | 44° | — | — |
| 2006 | 59° | 42° | 51° | 0.51" | — |
| 2005 | 65° | 48° | 56° | — | — |
| 2004 | 61° | 47° | 54° | — | — |
| 2003 | 56° | 32° | 44° | — | — |
| 2002 | 70° | 41° | 55° | — | — |
| 2001 | 66° | 43° | 54° | — | — |
| 2000 | 71° | 39° | 55° | — | — |
| 1999 | 74° | 49° | 61° | — | — |
| 1998 | 75° | 38° | 56° | — | — |
| 1983 | 57° | 52° | 54° | 5.05" | — |
| 1982 | 63° | 39° | 51° | — | — |
| 1981 | 57° | 40° | 48° | — | — |
| 1980 | 75° | 43° | 59° | — | — |
| 1979 | 61° | 35° | 48° | — | — |
| 1978 | 60° | 38° | 49° | — | — |
| 1977 | 62° | 54° | 58° | 0.76" | — |
| 1976 | 65° | 40° | 52° | — | — |
| 1975 | 69° | 43° | 56° | — | — |
| 1974 | 57° | 36° | 46° | — | — |
| 1973 | 54° | 39° | 46° | — | — |
| 1972 | 72° | 47° | 59° | — | — |
| 1971coldest | 46° | 35° | 41° | 3.12" | — |
41 years of data from ONTARIO INTL AP