Weather on December 17
Costa Mesa, CA
55 Years of Data
Avg High
69°F
Avg Low
47°F
Warmest
1985
72°F avg
Coldest
2008
49°F avg
About This Date
December 17th in Costa Mesa, CA typically brings mild winter weather, with average highs around 69°F and lows near 47°F. Over 55 years of records, the warmest December 17th was in 1985 (72°F average), while the coldest was 2008 (49°F) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 15% of December 17th dates historically, with the wettest December 17th recording 2.21" 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 17th in Costa Mesa, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 67° | 54° | 60° | — | — |
| 2024 | 77° | 48° | 63° | — | — |
| 2023 | 77° | 50° | 64° | — | — |
| 2022 | 65° | 43° | 54° | — | — |
| 2021 | 72° | 49° | 60° | — | — |
| 2020 | 66° | 50° | 58° | 0.03" | — |
| 2019 | 72° | 46° | 59° | — | — |
| 2018 | 65° | 55° | 60° | — | — |
| 2017 | 75° | 53° | 64° | — | — |
| 2016 | 58° | 41° | 49° | — | — |
| 2015 | 65° | 42° | 53° | — | — |
| 2014 | 66° | 55° | 61° | 0.28" | — |
| 2013 | 78° | 51° | 65° | — | — |
| 2012 | 62° | 55° | 59° | 0.05" | — |
| 2011 | 71° | 55° | 63° | — | — |
| 2010 | 59° | 53° | 56° | 1.02" | — |
| 2009 | 69° | 46° | 58° | — | — |
| 2008coldest | 53° | 44° | 49° | 2.21" | — |
| 2007 | 61° | 46° | 53° | — | — |
| 2006 | 58° | 44° | 51° | — | — |
| 2005 | 63° | 50° | 56° | — | — |
| 2004 | 79° | 52° | 65° | — | — |
| 2003 | 73° | 40° | 56° | — | — |
| 2002 | 61° | 49° | 55° | 0.13" | — |
| 2001 | 63° | 40° | 51° | — | — |
| 2000 | 74° | 44° | 59° | — | — |
| 1999 | 73° | 46° | 60° | — | — |
| 1998 | 85° | 51° | 68° | — | — |
| 1997 | 75° | 47° | 61° | — | — |
| 1996 | 76° | 39° | 57° | — | — |
| 1995 | 71° | 41° | 56° | — | — |
| 1994 | 73° | 42° | 58° | — | — |
| 1993 | 68° | 42° | 55° | — | — |
| 1992 | 63° | 44° | 53° | — | — |
| 1991 | 70° | 52° | 61° | — | — |
| 1990 | 65° | 41° | 53° | — | — |
| 1989 | 67° | 42° | 54° | — | — |
| 1988 | 62° | 45° | 53° | — | — |
| 1987 | 57° | 46° | 52° | 1.07" | — |
| 1986 | 74° | 47° | 60° | — | — |
| 1985warmest | 84° | 61° | 72° | — | — |
| 1984 | 60° | 42° | 51° | — | — |
| 1983 | 64° | 54° | 59° | — | — |
| 1982 | 69° | 40° | 54° | — | — |
| 1981 | 73° | 49° | 61° | — | — |
| 1980 | 81° | 52° | 66° | — | — |
| 1979 | 79° | 43° | 61° | — | — |
| 1978 | 66° | 50° | 58° | 1.3" | — |
| 1977 | 64° | 52° | 58° | — | — |
| 1976 | 78° | 45° | 61° | — | — |
| 1975 | 65° | 43° | 54° | — | — |
| 1974 | 75° | 48° | 62° | — | — |
| 1973 | 69° | 44° | 57° | — | — |
| 1972 | 70° | 46° | 58° | — | — |
| 1971 | 74° | 42° | 58° | — | — |
55 years of data from SANTA ANA JOHN WAYNE AP