Weather on May 12
Costa Mesa, CA
55 Years of Data
About This Date
May 12th in Costa Mesa, CA typically brings pleasant spring weather, with average highs around 74°F and lows near 57°F. Over 56 years of records, the warmest May 12th was in 1979 (77°F average), while the coldest was 2008 (59°F) — a 18°F range across recorded history. Rain or other precipitation has occurred on about 11% of May 12th dates historically, with the wettest May 12th recording 0.97" of rain. The last decade has been 1.0°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.0°F cooler on this date compared to 20-30 years ago.
Planning for May 12th in Costa Mesa, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 69° | 59° | 64° | — | — |
| 2025 | 72° | 61° | 66° | — | — |
| 2024 | 70° | 60° | 65° | — | — |
| 2023 | 70° | 60° | 65° | — | — |
| 2022 | 80° | 54° | 67° | — | — |
| 2021 | 73° | 62° | 68° | — | — |
| 2020 | 77° | 63° | 70° | — | — |
| 2019 | 72° | 59° | 65° | — | — |
| 2018 | 67° | 57° | 62° | 0.03" | — |
| 2017 | 69° | 60° | 65° | — | — |
| 2016 | 69° | 58° | 63° | — | — |
| 2015 | 68° | 58° | 63° | — | — |
| 2014 | 93° | 60° | 77° | — | — |
| 2013 | 82° | 62° | 72° | — | — |
| 2012 | 73° | 61° | 67° | — | — |
| 2011 | 74° | 57° | 65° | — | — |
| 2010 | 71° | 51° | 61° | — | — |
| 2009 | 71° | 61° | 66° | — | — |
| 2008coldest | 63° | 56° | 59° | 0.05" | — |
| 2007 | 68° | 57° | 63° | — | — |
| 2006 | 70° | 60° | 65° | — | — |
| 2005 | 80° | 56° | 68° | — | — |
| 2004 | 72° | 58° | 65° | — | — |
| 2003 | 74° | 55° | 64° | — | — |
| 2002 | 90° | 54° | 72° | — | — |
| 2001 | 68° | 59° | 64° | 0.03" | — |
| 2000 | 80° | 52° | 66° | — | — |
| 1999 | 69° | 56° | 62° | — | — |
| 1998 | 66° | 54° | 60° | 0.97" | — |
| 1997 | 77° | 62° | 70° | — | — |
| 1996 | 88° | 60° | 74° | — | — |
| 1995 | 69° | 55° | 62° | — | — |
| 1994 | 67° | 56° | 61° | — | — |
| 1993 | 72° | 58° | 65° | — | — |
| 1992 | 78° | 61° | 69° | — | — |
| 1991 | 75° | 51° | 63° | — | — |
| 1990 | 69° | 57° | 63° | — | — |
| 1989 | 69° | 55° | 62° | — | — |
| 1988 | 86° | 59° | 73° | — | — |
| 1987 | 85° | 64° | 74° | — | — |
| 1986 | 71° | 55° | 63° | — | — |
| 1985 | 69° | 53° | 61° | — | — |
| 1984 | 78° | 57° | 68° | — | — |
| 1983 | 74° | 51° | 62° | — | — |
| 1982 | 71° | 52° | 61° | 0.15" | — |
| 1981 | 73° | 59° | 66° | — | — |
| 1980 | 69° | 52° | 60° | — | — |
| 1979warmest | 98° | 56° | 77° | — | — |
| 1978 | 89° | 57° | 73° | — | — |
| 1977 | 67° | 54° | 60° | 0.03" | — |
| 1976 | 79° | 59° | 69° | — | — |
| 1975 | 76° | 54° | 65° | — | — |
| 1974 | 75° | 58° | 66° | — | — |
| 1973 | 68° | 57° | 63° | — | — |
| 1972 | 80° | 56° | 68° | — | — |
| 1971 | 69° | 56° | 62° | — | — |
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.