Weather on March 15
Costa Mesa, CA
55 Years of Data
Avg High
69°F
Avg Low
50°F
Warmest
2015
78°F avg
Coldest
2008
37°F avg
About This Date
March 15th in Costa Mesa, CA typically brings mild spring weather, with average highs around 69°F and lows near 50°F. Over 56 years of records, the warmest March 15th was in 2015 (78°F average), while the coldest was 2008 (37°F) — a 41°F range across recorded history. Rain or other precipitation has occurred on about 16% of March 15th dates historically, with the wettest March 15th recording 5.56" of rain. The last decade has been 2.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.7°F warmer on this date compared to 20-30 years ago.
Planning for March 15th in Costa Mesa, CA? Great weather for outdoor activities.
Warming Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 75° | 57° | 66° | — | — |
| 2025 | 64° | 48° | 56° | 0.1" | — |
| 2024 | 67° | 54° | 60° | — | — |
| 2023 | 62° | 54° | 58° | 2.51" | — |
| 2022 | 75° | 53° | 64° | — | — |
| 2021 | 58° | 50° | 54° | 0.25" | — |
| 2020 | 68° | 58° | 63° | 0.18" | — |
| 2019 | 77° | 57° | 67° | — | — |
| 2018 | 63° | 54° | 58° | 0.48" | — |
| 2017 | 79° | 56° | 67° | — | — |
| 2016 | 72° | 53° | 62° | — | — |
| 2015warmest | 91° | 65° | 78° | — | — |
| 2014 | 77° | 53° | 65° | — | — |
| 2013 | 64° | 52° | 58° | — | — |
| 2012 | 64° | 55° | 60° | — | — |
| 2011 | 70° | 54° | 62° | — | — |
| 2010 | 82° | 47° | 64° | — | — |
| 2009 | 62° | 52° | 57° | — | — |
| 2008coldest | 61° | 12° | 37° | — | — |
| 2007 | 68° | 56° | 62° | — | — |
| 2006 | 63° | 51° | 57° | — | — |
| 2005 | 75° | 47° | 61° | — | — |
| 2004 | 66° | 56° | 61° | — | — |
| 2003 | 61° | 57° | 59° | 5.56" | — |
| 2002 | 63° | 43° | 53° | — | — |
| 2001 | 62° | 55° | 59° | — | — |
| 2000 | 66° | 53° | 60° | — | — |
| 1999 | 57° | 46° | 52° | 0.53" | — |
| 1998 | 72° | 52° | 62° | — | — |
| 1997 | 70° | 53° | 61° | — | — |
| 1996 | 70° | 49° | 59° | — | — |
| 1995 | 79° | 49° | 64° | — | — |
| 1994 | 82° | 54° | 68° | — | — |
| 1993 | 74° | 59° | 66° | — | — |
| 1992 | 70° | 50° | 60° | — | — |
| 1991 | 59° | 49° | 54° | — | — |
| 1990 | 76° | 41° | 58° | — | — |
| 1989 | 69° | 49° | 59° | — | — |
| 1988 | 70° | 46° | 58° | — | — |
| 1987 | 64° | 46° | 55° | 0.41" | — |
| 1986 | 61° | 45° | 53° | — | — |
| 1985 | 65° | 51° | 58° | — | — |
| 1984 | 68° | 51° | 60° | — | — |
| 1983 | 70° | 46° | 58° | — | — |
| 1982 | 62° | 51° | 57° | 1.22" | — |
| 1981 | 75° | 41° | 58° | — | — |
| 1980 | 71° | 50° | 61° | — | — |
| 1979 | 66° | 49° | 57° | — | — |
| 1978 | 87° | 49° | 68° | — | — |
| 1977 | 66° | 41° | 54° | — | — |
| 1976 | 76° | 44° | 60° | — | — |
| 1975 | 64° | 43° | 53° | — | — |
| 1974 | 76° | 51° | 63° | — | — |
| 1973 | 70° | 42° | 56° | — | — |
| 1972 | 71° | 55° | 63° | — | — |
| 1971 | 71° | 44° | 58° | — | — |
56 years of data from SANTA ANA JOHN WAYNE AP