Weather on December 18
Santa Ana, CA
55 Years of Data
About This Date
December 18th in Santa Ana, 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 18th was in 1985 (70°F average), while the coldest was 2008 (49°F) — a 21°F range across recorded history. Rain or other precipitation has occurred on about 22% of December 18th dates historically, with the wettest December 18th recording 2.92" of rain. The last decade has been 1.0°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.0°F warmer on this date compared to 20-30 years ago.
Planning for December 18th in Santa Ana, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 81° | 52° | 66° | 0.03" | — |
| 2024 | 83° | 54° | 68° | — | — |
| 2023 | 74° | 57° | 65° | — | — |
| 2022 | 66° | 44° | 55° | — | — |
| 2021 | 72° | 42° | 57° | — | — |
| 2020 | 72° | 48° | 60° | — | — |
| 2019 | 65° | 42° | 53° | — | — |
| 2018 | 69° | 54° | 61° | — | — |
| 2017 | 72° | 48° | 60° | — | — |
| 2016 | 67° | 39° | 53° | — | — |
| 2015 | 73° | 45° | 59° | — | — |
| 2014 | 65° | 51° | 58° | — | — |
| 2013 | 71° | 56° | 63° | — | — |
| 2012 | 61° | 55° | 58° | 0.28" | — |
| 2011 | 67° | 48° | 57° | 0.03" | — |
| 2010 | 62° | 54° | 58° | 1.4" | — |
| 2009 | 74° | 45° | 59° | — | — |
| 2008coldest | 59° | 39° | 49° | 0.91" | — |
| 2007 | 64° | 51° | 58° | — | — |
| 2006 | 61° | 39° | 50° | — | — |
| 2005 | 63° | 50° | 56° | — | — |
| 2004 | 84° | 47° | 65° | — | — |
| 2003 | 79° | 47° | 63° | — | — |
| 2002 | 65° | 40° | 52° | — | — |
| 2001 | 67° | 42° | 54° | — | — |
| 2000 | 80° | 49° | 64° | — | — |
| 1999 | 75° | 45° | 60° | — | — |
| 1998 | 66° | 54° | 60° | — | — |
| 1997 | 68° | 52° | 60° | 1.52" | — |
| 1996 | 72° | 36° | 54° | — | — |
| 1995 | 66° | 43° | 54° | — | — |
| 1994 | 68° | 44° | 56° | — | — |
| 1993 | 66° | 42° | 54° | — | — |
| 1992 | 61° | 46° | 53° | 0.33" | — |
| 1991 | 68° | 55° | 62° | — | — |
| 1990 | 65° | 42° | 53° | — | — |
| 1989 | 63° | 45° | 54° | — | — |
| 1988 | 62° | 45° | 53° | 1.02" | — |
| 1987 | 70° | 49° | 59° | 0.05" | — |
| 1986 | 69° | 48° | 59° | — | — |
| 1985warmest | 85° | 56° | 70° | — | — |
| 1984 | 57° | 43° | 50° | 1.52" | — |
| 1983 | 68° | 45° | 56° | — | — |
| 1982 | 71° | 43° | 57° | — | — |
| 1981 | 71° | 49° | 60° | — | — |
| 1980 | 77° | 52° | 64° | — | — |
| 1979 | 76° | 47° | 61° | — | — |
| 1978 | 59° | 48° | 54° | 2.92" | — |
| 1977 | 65° | 53° | 59° | 1.14" | — |
| 1976 | 71° | 47° | 59° | — | — |
| 1975 | 67° | 33° | 50° | — | — |
| 1974 | 75° | 42° | 59° | — | — |
| 1973 | 69° | 47° | 58° | — | — |
| 1972 | 75° | 45° | 60° | — | — |
| 1971 | 64° | 43° | 53° | — | — |
Santa Ana, CA Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Santa Ana, CA Monthly Precipitation
Average rainfall per month, in inches.
Santa Ana, 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 Santa Ana, CA
Most pleasant months in Santa Ana, CA: June, July.