Weather on December 5
Rancho Cucamonga, CA
55 Years of Data
Avg High
68°F
Avg Low
43°F
Warmest
1979
70°F avg
Coldest
1972
41°F avg
About This Date
December 5th in Rancho Cucamonga, CA typically brings mild winter weather, with average highs around 68°F and lows near 43°F — a 25°F daily swing. Over 41 years of records, the warmest December 5th was in 1979 (70°F average), while the coldest was 1972 (41°F) — a 29°F range across recorded history. Rain or other precipitation has occurred on about 12% of December 5th dates historically, with the wettest December 5th recording 1.57" of rain. The last decade has been 2.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.6°F warmer on this date compared to 20-30 years ago.
Planning for December 5th 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 | 72° | 41° | 56° | — | — |
| 2024 | 74° | 45° | 59° | — | — |
| 2023 | 84° | 50° | 67° | — | — |
| 2022 | 63° | 48° | 55° | — | — |
| 2021 | 70° | 41° | 55° | — | — |
| 2020 | 74° | 38° | 56° | — | — |
| 2019 | 66° | 52° | 59° | — | — |
| 2018 | 57° | 45° | 51° | 1.57" | — |
| 2017 | 67° | 51° | 59° | — | — |
| 2016 | 67° | 42° | 54° | — | — |
| 2015 | 79° | 38° | 58° | — | — |
| 2014 | 70° | 55° | 62° | — | — |
| 2013 | 57° | 41° | 49° | — | — |
| 2012 | 73° | 47° | 60° | — | — |
| 2011 | 60° | 34° | 47° | — | — |
| 2010 | 69° | 44° | 57° | 0.97" | — |
| 2009 | 59° | 41° | 50° | — | — |
| 2008 | 77° | 46° | 62° | — | — |
| 2007 | 80° | 50° | 65° | — | — |
| 2006 | 75° | 38° | 56° | — | — |
| 2005 | 70° | 36° | 53° | — | — |
| 2004 | 52° | 41° | 46° | 0.58" | — |
| 2003 | 76° | 48° | 62° | — | — |
| 2002 | 75° | 46° | 61° | — | — |
| 2001 | 59° | 38° | 48° | — | — |
| 2000 | 80° | 51° | 66° | — | — |
| 1999 | 69° | 35° | 52° | — | — |
| 1998 | 57° | 39° | 48° | — | — |
| 1983 | 59° | 33° | 46° | 0.79" | — |
| 1982 | 70° | 41° | 55° | — | — |
| 1981 | 73° | 45° | 59° | — | — |
| 1980 | 62° | 50° | 56° | — | — |
| 1979warmest | 84° | 55° | 70° | — | — |
| 1978 | 57° | 37° | 47° | — | — |
| 1977 | 81° | 46° | 63° | — | — |
| 1976 | 69° | 40° | 54° | — | — |
| 1975 | 62° | 40° | 51° | — | — |
| 1974 | 59° | 41° | 50° | 1.17" | — |
| 1973 | 65° | 37° | 51° | — | — |
| 1972coldest | 50° | 32° | 41° | — | — |
| 1971 | 65° | 37° | 51° | — | — |
41 years of data from ONTARIO INTL AP