Weather on December 30
Rancho Cucamonga, CA
55 Years of Data
Avg High
63°F
Avg Low
42°F
Warmest
1980
68°F avg
Coldest
2010
43°F avg
About This Date
December 30th in Rancho Cucamonga, CA typically brings mild winter weather, with average highs around 63°F and lows near 42°F. Over 41 years of records, the warmest December 30th was in 1980 (68°F average), while the coldest was 2010 (43°F) — a 25°F range across recorded history. Rain or other precipitation has occurred on about 29% of December 30th dates historically, with the wettest December 30th recording 2.59" 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 30th in Rancho Cucamonga, CA? Great weather for outdoor activities.
Warming Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 67° | 50° | 58° | — | — |
| 2024 | 66° | 48° | 57° | — | — |
| 2023 | 60° | 51° | 56° | 0.38" | — |
| 2022 | 58° | 53° | 55° | 0.03" | — |
| 2021 | 56° | 46° | 51° | 1.47" | — |
| 2020 | 67° | 39° | 53° | — | — |
| 2019 | 64° | 46° | 55° | — | — |
| 2018 | 62° | 36° | 49° | — | — |
| 2017 | 78° | 45° | 61° | — | — |
| 2016 | 60° | 52° | 56° | 0.1" | — |
| 2015 | 60° | 35° | 48° | — | — |
| 2014 | 54° | 44° | 49° | 0.03" | — |
| 2013 | 73° | 41° | 57° | — | — |
| 2012 | 52° | 36° | 44° | 0.05" | — |
| 2011 | 75° | 44° | 60° | — | — |
| 2010coldest | 53° | 34° | 43° | — | — |
| 2009 | 50° | 42° | 46° | 0.15" | — |
| 2008 | 73° | 45° | 59° | — | — |
| 2007 | 60° | 37° | 49° | — | — |
| 2006 | 66° | 39° | 53° | — | — |
| 2005 | 65° | 46° | 55° | — | — |
| 2004 | 58° | 44° | 51° | — | — |
| 2003 | 64° | 43° | 53° | — | — |
| 2002 | 62° | 39° | 51° | — | — |
| 2001 | 61° | 44° | 52° | 0.03" | — |
| 2000 | 75° | 41° | 58° | — | — |
| 1999 | 69° | 40° | 54° | — | — |
| 1998 | 79° | 43° | 61° | — | — |
| 1983 | 72° | 39° | 55° | — | — |
| 1982 | 57° | 43° | 50° | 0.28" | — |
| 1981 | 58° | 47° | 52° | 1.24" | — |
| 1980warmest | 82° | 53° | 68° | — | — |
| 1979 | 68° | 41° | 55° | — | — |
| 1978 | 61° | 37° | 49° | — | — |
| 1977 | 61° | 50° | 55° | 0.91" | — |
| 1976 | 55° | 42° | 49° | 2.59" | — |
| 1975 | 64° | 40° | 52° | — | — |
| 1974 | 54° | 34° | 44° | — | — |
| 1973 | 62° | 45° | 53° | — | — |
| 1972 | 59° | 33° | 46° | — | — |
| 1971 | 58° | 32° | 45° | — | — |
41 years of data from ONTARIO INTL AP