Weather on April 20
Costa Mesa, CA
55 Years of Data
About This Date
April 20th in Costa Mesa, CA typically brings pleasant spring weather, with average highs around 73°F and lows near 54°F. Over 56 years of records, the warmest April 20th was in 2009 (79°F average), while the coldest was 1995 (55°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 11% of April 20th dates historically, with the wettest April 20th recording 2.29" of rain. The last decade has been 2.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.4°F warmer on this date compared to 20-30 years ago.
Planning for April 20th in Costa Mesa, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 72° | 57° | 64° | — | — |
| 2025 | 70° | 54° | 62° | — | — |
| 2024 | 75° | 58° | 66° | — | — |
| 2023 | 77° | 53° | 65° | — | — |
| 2022 | 69° | 59° | 64° | — | — |
| 2021 | 68° | 58° | 63° | — | — |
| 2020 | 71° | 62° | 67° | — | — |
| 2019 | 66° | 57° | 62° | — | — |
| 2018 | 73° | 53° | 63° | — | — |
| 2017 | 74° | 57° | 65° | — | — |
| 2016 | 85° | 59° | 72° | — | — |
| 2015 | 68° | 59° | 64° | — | — |
| 2014 | 74° | 59° | 66° | — | — |
| 2013 | 77° | 53° | 65° | — | — |
| 2012 | 74° | 56° | 65° | — | — |
| 2011 | 69° | 58° | 63° | 0.13" | — |
| 2010 | 69° | 54° | 61° | 0.1" | — |
| 2009warmest | 98° | 60° | 79° | — | — |
| 2008 | 66° | 53° | 60° | — | — |
| 2007 | 58° | 52° | 55° | 0.58" | — |
| 2006 | 76° | 53° | 64° | — | — |
| 2005 | 68° | 50° | 59° | — | — |
| 2004 | 68° | 53° | 61° | — | — |
| 2003 | 72° | 52° | 62° | — | — |
| 2002 | 67° | 52° | 59° | — | — |
| 2001 | 64° | 51° | 58° | 0.05" | — |
| 2000 | 73° | 53° | 63° | — | — |
| 1999 | 70° | 57° | 63° | — | — |
| 1998 | 84° | 54° | 69° | — | — |
| 1997 | 78° | 60° | 69° | — | — |
| 1996 | 71° | 52° | 61° | — | — |
| 1995coldest | 63° | 47° | 55° | — | — |
| 1994 | 73° | 57° | 65° | — | — |
| 1993 | 85° | 57° | 71° | — | — |
| 1992 | 84° | 52° | 68° | — | — |
| 1991 | 67° | 57° | 62° | — | — |
| 1990 | 71° | 58° | 64° | — | — |
| 1989 | 76° | 60° | 68° | — | — |
| 1988 | 65° | 51° | 58° | 2.29" | — |
| 1987 | 90° | 49° | 69° | — | — |
| 1986 | 91° | 55° | 73° | — | — |
| 1985 | 66° | 51° | 59° | — | — |
| 1984 | 74° | 51° | 62° | — | — |
| 1983 | 66° | 51° | 59° | 1.57" | — |
| 1982 | 89° | 54° | 71° | — | — |
| 1981 | 69° | 49° | 59° | — | — |
| 1980 | 77° | 56° | 66° | — | — |
| 1979 | 76° | 49° | 62° | — | — |
| 1978 | 72° | 53° | 62° | — | — |
| 1977 | 79° | 52° | 65° | — | — |
| 1976 | 83° | 52° | 67° | — | — |
| 1975 | 72° | 48° | 60° | — | — |
| 1974 | 69° | 51° | 60° | — | — |
| 1973 | 72° | 45° | 58° | — | — |
| 1972 | 71° | 43° | 57° | — | — |
| 1971 | 64° | 51° | 58° | — | — |
Costa Mesa, CA Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Costa Mesa, CA Monthly Precipitation
Average rainfall per month, in inches.
Costa Mesa, 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 Costa Mesa, CA
Most pleasant months in Costa Mesa, CA: June, July.