Weather on December 16
Rancho Cucamonga, CA
55 Years of Data
About This Date
December 16th in Rancho Cucamonga, CA typically brings mild winter weather, with average highs around 69°F and lows near 44°F — a 25°F daily swing. Over 41 years of records, the warmest December 16th was in 1980 (74°F average), while the coldest was 2021 (45°F) — a 29°F range across recorded history. Rain or other precipitation has occurred on about 15% of December 16th dates historically, with the wettest December 16th recording 1.39" of rain. The last decade has been 2.8°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.8°F cooler on this date compared to 20-30 years ago.
Planning for December 16th in Rancho Cucamonga, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 79° | 48° | 63° | — | — |
| 2024 | 73° | 44° | 59° | — | — |
| 2023 | 80° | 45° | 62° | — | — |
| 2022 | 65° | 40° | 52° | — | — |
| 2021coldest | 55° | 35° | 45° | — | — |
| 2020 | 73° | 43° | 58° | — | — |
| 2019 | 68° | 40° | 54° | — | — |
| 2018 | 73° | 42° | 58° | — | — |
| 2017 | 67° | 47° | 57° | — | — |
| 2016 | 60° | 44° | 52° | 1.22" | — |
| 2015 | 60° | 37° | 49° | — | — |
| 2014 | 59° | 52° | 55° | 0.02" | — |
| 2013 | 84° | 48° | 66° | — | — |
| 2012 | 54° | 49° | 51° | — | — |
| 2011 | 63° | 52° | 57° | — | — |
| 2010 | 58° | 48° | 53° | 0.22" | — |
| 2009 | 71° | 44° | 58° | — | — |
| 2008 | 54° | 42° | 48° | 0.01" | — |
| 2007 | 67° | 38° | 52° | — | — |
| 2006 | 57° | 44° | 51° | 0.15" | — |
| 2005 | 58° | 42° | 50° | — | — |
| 2004 | 74° | 64° | 69° | — | — |
| 2003 | 71° | 35° | 53° | — | — |
| 2002 | 61° | 50° | 55° | 1.39" | — |
| 2001 | 62° | 33° | 48° | — | — |
| 2000 | 80° | 41° | 61° | — | — |
| 1999 | 77° | 45° | 61° | — | — |
| 1998 | 82° | 64° | 73° | — | — |
| 1983 | 65° | 41° | 53° | — | — |
| 1982 | 71° | 32° | 52° | — | — |
| 1981 | 71° | 42° | 57° | — | — |
| 1980warmest | 84° | 65° | 74° | — | — |
| 1979 | 76° | 43° | 59° | — | — |
| 1978 | 69° | 39° | 54° | — | — |
| 1977 | 68° | 42° | 55° | — | — |
| 1976 | 78° | 47° | 62° | — | — |
| 1975 | 64° | 37° | 51° | — | — |
| 1974 | 76° | 49° | 62° | — | — |
| 1973 | 74° | 44° | 59° | — | — |
| 1972 | 67° | 40° | 53° | — | — |
| 1971 | 61° | 33° | 47° | — | — |
Rancho Cucamonga, CA Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Rancho Cucamonga, CA Monthly Precipitation
Average rainfall per month, in inches.
Rancho Cucamonga, CA Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Rancho Cucamonga, CA
Most pleasant months in Rancho Cucamonga, CA: January, February, March, April, May, October, November, December.
What to expect on December 16th
This page shows what actually happened each year. For the odds — typical high and low, and how often it stays dry — see the climatological outlook for this date.
December 16th outlook →