Weather on November 21
Costa Mesa, CA
55 Years of Data
Avg High
72°F
Avg Low
52°F
Warmest
1997
74°F avg
Coldest
1983
52°F avg
About This Date
November 21st in Costa Mesa, CA typically brings pleasant fall weather, with average highs around 72°F and lows near 52°F. Over 55 years of records, the warmest November 21st was in 1997 (74°F average), while the coldest was 1983 (52°F) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 22% of November 21st dates historically, with the wettest November 21st recording 3.43" of rain. The last decade has been 1.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.4°F warmer on this date compared to 20-30 years ago.
Planning for November 21st in Costa Mesa, CA? Great weather for outdoor activities.
Warming Trend
1.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 66° | 55° | 61° | — | — |
| 2024 | 75° | 46° | 61° | — | — |
| 2023 | 85° | 60° | 72° | — | — |
| 2022 | 78° | 50° | 64° | — | — |
| 2021 | 88° | 52° | 70° | — | — |
| 2020 | 73° | 53° | 63° | — | — |
| 2019 | 69° | 55° | 62° | — | — |
| 2018 | 71° | 54° | 62° | 0.03" | — |
| 2017 | 80° | 57° | 69° | — | — |
| 2016 | 66° | 58° | 62° | 0.91" | — |
| 2015 | 87° | 52° | 69° | — | — |
| 2014 | 73° | 59° | 66° | — | — |
| 2013 | 64° | 57° | 61° | 0.38" | — |
| 2012 | 68° | 55° | 62° | — | — |
| 2011 | 63° | 46° | 54° | 0.03" | — |
| 2010 | 66° | 55° | 61° | 0.33" | — |
| 2009 | 65° | 50° | 57° | — | — |
| 2008 | 82° | 52° | 67° | — | — |
| 2007 | 68° | 55° | 62° | — | — |
| 2006 | 70° | 53° | 61° | 0.03" | — |
| 2005 | 83° | 53° | 68° | — | — |
| 2004 | 59° | 45° | 52° | 1.5" | — |
| 2003 | 63° | 56° | 59° | — | — |
| 2002 | 85° | 58° | 71° | — | — |
| 2001 | 68° | 53° | 61° | — | — |
| 2000 | 71° | 53° | 62° | — | — |
| 1999 | 68° | 50° | 59° | — | — |
| 1998 | 79° | 47° | 63° | — | — |
| 1997warmest | 70° | 78° | 74° | — | — |
| 1996 | 66° | 60° | 63° | 3.43" | — |
| 1995 | 73° | 56° | 64° | — | — |
| 1994 | 68° | 40° | 54° | — | — |
| 1993 | 74° | 47° | 60° | — | — |
| 1992 | 72° | 55° | 63° | — | — |
| 1991 | 74° | 50° | 62° | — | — |
| 1990 | 68° | 48° | 58° | — | — |
| 1989 | 76° | 55° | 65° | — | — |
| 1988 | 76° | 46° | 61° | — | — |
| 1987 | 70° | 54° | 62° | — | — |
| 1986 | 69° | 59° | 64° | — | — |
| 1985 | 70° | 49° | 59° | — | — |
| 1984 | 71° | 53° | 62° | 0.2" | — |
| 1983coldest | 63° | 41° | 52° | 0.15" | — |
| 1982 | 67° | 41° | 54° | — | — |
| 1981 | 74° | 47° | 60° | — | — |
| 1980 | 80° | — | — | — | — |
| 1979 | 69° | 39° | 54° | — | — |
| 1978 | 65° | 53° | 59° | 2.16" | — |
| 1977 | 70° | 47° | 58° | — | — |
| 1976 | 72° | 54° | 63° | — | — |
| 1975 | 77° | 42° | 60° | — | — |
| 1974 | 65° | 58° | 61° | — | — |
| 1973 | 64° | 50° | 57° | 0.13" | — |
| 1972 | 73° | 42° | 58° | — | — |
| 1971 | 67° | 44° | 55° | — | — |
55 years of data from SANTA ANA JOHN WAYNE AP