Weather on December 3
Rancho Cucamonga, CA
55 Years of Data
Avg High
68°F
Avg Low
44°F
Warmest
2014
64°F avg
Coldest
1971
46°F avg
About This Date
December 3rd in Rancho Cucamonga, CA typically brings mild winter weather, with average highs around 68°F and lows near 44°F. Over 41 years of records, the warmest December 3rd was in 2014 (64°F average), while the coldest was 1971 (46°F) — a 18°F range across recorded history. Rain or other precipitation has occurred on about 15% of December 3rd dates historically, with the wettest December 3rd recording 2.31" of rain. The last decade has been 1.9°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.9°F warmer on this date compared to 20-30 years ago.
Planning for December 3rd in Rancho Cucamonga, CA? Great weather for outdoor activities.
Warming Trend
1.0°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 67° | 49° | 58° | — | — |
| 2024 | 71° | 45° | 58° | — | — |
| 2023 | 68° | 41° | 55° | — | — |
| 2022 | 72° | 49° | 60° | — | — |
| 2021 | 67° | 49° | 58° | — | — |
| 2020 | 75° | 43° | 59° | — | — |
| 2019 | 70° | 51° | 60° | — | — |
| 2018 | 67° | 42° | 54° | — | — |
| 2017 | 71° | 47° | 59° | — | — |
| 2016 | 67° | 40° | 53° | — | — |
| 2015 | 76° | 44° | 60° | — | — |
| 2014warmest | 68° | 59° | 64° | 2.31" | — |
| 2013 | 65° | 44° | 54° | — | — |
| 2012 | 67° | 57° | 62° | 0.81" | — |
| 2011 | 62° | 38° | 50° | — | — |
| 2010 | 73° | 42° | 58° | — | — |
| 2009 | 67° | 46° | 56° | — | — |
| 2008 | 70° | 52° | 61° | — | — |
| 2007 | 78° | 41° | 60° | — | — |
| 2006 | 76° | 42° | 59° | — | — |
| 2005 | 64° | 48° | 56° | 0.03" | — |
| 2004 | 67° | 37° | 52° | — | — |
| 2003 | 76° | 42° | 59° | — | — |
| 2002 | 66° | 47° | 56° | — | — |
| 2001 | 60° | 49° | 54° | 0.71" | — |
| 2000 | 75° | 41° | 58° | — | — |
| 1999 | 67° | 42° | 54° | — | — |
| 1998 | 58° | 52° | 55° | 0.08" | — |
| 1983 | 55° | 45° | 50° | — | — |
| 1982 | 70° | 38° | 54° | — | — |
| 1981 | 78° | 43° | 60° | — | — |
| 1980 | 59° | 39° | 49° | — | — |
| 1979 | 79° | 46° | 62° | — | — |
| 1978 | 62° | 36° | 49° | — | — |
| 1977 | 75° | 48° | 62° | — | — |
| 1976 | 76° | 43° | 59° | — | — |
| 1975 | 70° | 43° | 56° | — | — |
| 1974 | 61° | 45° | 53° | — | — |
| 1973 | 63° | 37° | 50° | — | — |
| 1972 | 64° | 38° | 51° | — | — |
| 1971coldest | 56° | 37° | 46° | 0.08" | — |
41 years of data from ONTARIO INTL AP