Weather on December 7
Rancho Cucamonga, CA
55 Years of Data
Avg High
67°F
Avg Low
44°F
Warmest
2017
69°F avg
Coldest
1978
37°F avg
About This Date
December 7th in Rancho Cucamonga, CA typically brings mild winter weather, with average highs around 67°F and lows near 44°F. Over 41 years of records, the warmest December 7th was in 2017 (69°F average), while the coldest was 1978 (37°F) — a 32°F range across recorded history. Rain or other precipitation has occurred on about 22% of December 7th dates historically, with the wettest December 7th recording 2.72" of rain. The last decade has been 3.9°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.9°F warmer on this date compared to 20-30 years ago.
Planning for December 7th in Rancho Cucamonga, CA? Great weather for outdoor activities.
Warming Trend
1.2°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 77° | 46° | 62° | — | — |
| 2024 | 80° | 47° | 63° | — | — |
| 2023 | 65° | 49° | 57° | — | — |
| 2022 | 60° | 45° | 52° | — | — |
| 2021 | 61° | 50° | 55° | 0.05" | — |
| 2020 | 76° | 46° | 61° | — | — |
| 2019 | 64° | 57° | 61° | 0.25" | — |
| 2018 | 67° | 46° | 56° | — | — |
| 2017warmest | 73° | 64° | 69° | — | — |
| 2016 | 62° | 49° | 55° | — | — |
| 2015 | 80° | 46° | 63° | — | — |
| 2014 | 76° | 49° | 62° | — | — |
| 2013 | 51° | 41° | 46° | 0.3" | — |
| 2012 | 75° | 48° | 62° | — | — |
| 2011 | 67° | 32° | 49° | — | — |
| 2010 | 76° | 44° | 60° | 0.03" | — |
| 2009 | 50° | 39° | 45° | 2.72" | — |
| 2008 | 66° | 55° | 61° | — | — |
| 2007 | 56° | 49° | 52° | 0.66" | — |
| 2006 | 82° | 43° | 62° | — | — |
| 2005 | 73° | 39° | 56° | — | — |
| 2004 | 54° | 44° | 49° | 0.15" | — |
| 2003 | 61° | 54° | 57° | 0.13" | — |
| 2002 | 65° | 49° | 57° | — | — |
| 2001 | 76° | 43° | 59° | — | — |
| 2000 | 75° | 53° | 64° | — | — |
| 1999 | 64° | 40° | 52° | — | — |
| 1998 | 60° | 36° | 48° | — | — |
| 1983 | 73° | 37° | 55° | — | — |
| 1982 | 64° | 38° | 51° | — | — |
| 1981 | 77° | 42° | 60° | — | — |
| 1980 | 58° | 40° | 49° | — | — |
| 1979 | 80° | 50° | 65° | — | — |
| 1978coldest | 47° | 28° | 37° | — | — |
| 1977 | 71° | 44° | 58° | — | — |
| 1976 | 73° | 39° | 56° | — | — |
| 1975 | 77° | 41° | 59° | — | — |
| 1974 | 69° | 40° | 54° | — | — |
| 1973 | 75° | 45° | 60° | — | — |
| 1972 | 52° | 41° | 46° | 1.63" | — |
| 1971 | 54° | 35° | 44° | — | — |
41 years of data from ONTARIO INTL AP