Weather on December 15
Pomona, CA
55 Years of Data
Avg High
67°F
Avg Low
42°F
Warmest
1983
76°F avg
Coldest
1987
43°F avg
About This Date
December 15th in Pomona, CA typically brings mild winter weather, with average highs around 67°F and lows near 42°F — a 25°F daily swing. Over 51 years of records, the warmest December 15th was in 1983 (76°F average), while the coldest was 1987 (43°F) — a 33°F range across recorded history. Rain or other precipitation has occurred on about 10% of December 15th dates historically, with the wettest December 15th recording 4.8" 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 15th in Pomona, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 77° | 50° | 64° | — | — |
| 2024 | 64° | 39° | 52° | — | — |
| 2023 | 76° | 45° | 60° | — | — |
| 2022 | 58° | 40° | 49° | — | — |
| 2021 | 53° | 34° | 43° | — | — |
| 2020 | 65° | 40° | 52° | — | — |
| 2019 | 59° | 41° | 50° | — | — |
| 2018 | 73° | 47° | 60° | — | — |
| 2017 | 77° | 49° | 63° | — | — |
| 2016 | 68° | 50° | 59° | — | — |
| 2015 | 56° | 34° | 45° | — | — |
| 2014 | 65° | 46° | 55° | — | — |
| 2013 | 79° | 46° | 62° | — | — |
| 2012 | 58° | 38° | 48° | — | — |
| 2011 | 56° | 39° | 47° | 0.03" | — |
| 2010 | 58° | 52° | 55° | 0.05" | — |
| 2009 | 69° | 39° | 54° | — | — |
| 2008 | 50° | 42° | 46° | 4.8" | — |
| 2007 | 65° | 38° | 51° | — | — |
| 2006 | 66° | 46° | 56° | — | — |
| 2005 | 65° | 40° | 52° | — | — |
| 2004 | 77° | 49° | 63° | — | — |
| 2003 | 64° | 41° | 53° | — | — |
| 2002 | 66° | 46° | 56° | — | — |
| 2001 | 61° | 35° | 48° | — | — |
| 2000 | 61° | 40° | 50° | — | — |
| 1999 | 70° | 39° | 54° | — | — |
| 1998 | 78° | 48° | 63° | — | — |
| 1994 | 59° | 37° | 48° | — | — |
| 1993 | 61° | 34° | 47° | — | — |
| 1992 | 64° | 31° | 47° | — | — |
| 1991 | 79° | 41° | 60° | — | — |
| 1990 | 61° | 34° | 47° | — | — |
| 1989 | 73° | 43° | 58° | — | — |
| 1988 | 52° | 49° | 50° | 1.12" | — |
| 1987coldest | 53° | 32° | 43° | — | — |
| 1986 | 71° | 42° | 57° | — | — |
| 1985 | 75° | 38° | 56° | — | — |
| 1984 | 57° | 34° | 45° | 2.79" | — |
| 1983warmest | 75° | 77° | 76° | — | — |
| 1981 | 80° | 47° | 63° | — | — |
| 1980 | 85° | 39° | 62° | — | — |
| 1979 | 77° | 43° | 60° | — | — |
| 1978 | 76° | 43° | 59° | — | — |
| 1977 | 78° | 45° | 61° | — | — |
| 1976 | 79° | 38° | 58° | — | — |
| 1975 | 58° | 33° | 45° | — | — |
| 1974 | 71° | 42° | 57° | — | — |
| 1973 | 59° | 42° | 51° | — | — |
| 1972 | 62° | 35° | 49° | — | — |
| 1971 | 57° | 35° | 46° | — | — |
51 years of data from POMONA/FAIRPLEX