Weather on April 9
Costa Mesa, CA
55 Years of Data
Avg High
72°F
Avg Low
53°F
Warmest
2014
72°F avg
Coldest
1999
52°F avg
About This Date
April 9th in Costa Mesa, CA typically brings pleasant spring weather, with average highs around 72°F and lows near 53°F. Over 56 years of records, the warmest April 9th was in 2014 (72°F average), while the coldest was 1999 (52°F) — a 20°F range across recorded history. Rain or other precipitation has occurred on about 11% of April 9th dates historically, with the wettest April 9th recording 2.54" of rain. The last decade has been 4.9°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.9°F warmer on this date compared to 20-30 years ago.
Planning for April 9th in Costa Mesa, CA? Great weather for outdoor activities.
Warming Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 73° | 61° | 67° | — | — |
| 2025 | 74° | 56° | 65° | — | — |
| 2024 | 83° | 51° | 67° | — | — |
| 2023 | 68° | 53° | 61° | — | — |
| 2022 | 79° | 63° | 71° | — | — |
| 2021 | 71° | 55° | 63° | — | — |
| 2020 | 59° | 55° | 57° | 1.93" | — |
| 2019 | 71° | 60° | 66° | — | — |
| 2018 | 86° | 55° | 71° | — | — |
| 2017 | 70° | 51° | 60° | — | — |
| 2016 | 67° | 58° | 62° | 0.1" | — |
| 2015 | 70° | 52° | 61° | — | — |
| 2014warmest | 84° | 59° | 72° | — | — |
| 2013 | 71° | 51° | 61° | — | — |
| 2012 | 75° | 51° | 63° | — | — |
| 2011 | 60° | 44° | 52° | — | — |
| 2010 | 70° | 54° | 62° | — | — |
| 2009 | 65° | 54° | 59° | — | — |
| 2008 | 65° | 50° | 57° | — | — |
| 2007 | 69° | 58° | 63° | — | — |
| 2006 | 65° | 54° | 59° | — | — |
| 2005 | 67° | 51° | 59° | — | — |
| 2004 | 69° | 58° | 63° | — | — |
| 2003 | 75° | 54° | 64° | — | — |
| 2002 | 68° | 54° | 61° | — | — |
| 2001 | 57° | 46° | 52° | 0.08" | — |
| 2000 | 69° | 51° | 60° | — | — |
| 1999coldest | 61° | 44° | 52° | — | — |
| 1998 | 72° | 50° | 61° | — | — |
| 1997 | 71° | 53° | 62° | — | — |
| 1996 | 68° | 55° | 62° | — | — |
| 1995 | 73° | 51° | 62° | — | — |
| 1994 | 65° | 54° | 59° | 0.41" | — |
| 1993 | 79° | 54° | 66° | — | — |
| 1992 | 75° | 58° | 66° | — | — |
| 1991 | 83° | 52° | 67° | — | — |
| 1990 | 74° | 51° | 62° | — | — |
| 1989 | 80° | 58° | 69° | — | — |
| 1988 | 79° | 51° | 65° | — | — |
| 1987 | 86° | 56° | 71° | — | — |
| 1986 | 75° | 50° | 63° | — | — |
| 1985 | 69° | 52° | 60° | — | — |
| 1984 | 72° | 51° | 61° | — | — |
| 1983 | 66° | 54° | 60° | — | — |
| 1982 | 76° | 52° | 64° | — | — |
| 1981 | 70° | 51° | 60° | — | — |
| 1980 | 82° | 54° | 68° | — | — |
| 1979 | 66° | 56° | 61° | — | — |
| 1978 | 68° | 46° | 57° | 0.23" | — |
| 1977 | 67° | 54° | 60° | — | — |
| 1976 | 70° | 48° | 59° | — | — |
| 1975 | 66° | 44° | 55° | 2.54" | — |
| 1974 | 77° | 50° | 64° | — | — |
| 1973 | 80° | 51° | 66° | — | — |
| 1972 | 74° | 50° | 62° | — | — |
| 1971 | 71° | 49° | 60° | — | — |
56 years of data from SANTA ANA JOHN WAYNE AP