June weather in Costa Mesa, CA
The average temperature in Costa Mesa in June is 68.3°F (62.6°F–74.1°F). Average precipitation: 0.01 inches.
June is a summer month in Costa Mesa, and is warmer than the annual average of 64.9°F. Daily temperatures swing about 11.5°F between overnight low and afternoon high. Expect about 1 days with precipitation. Daylight averages about 14h 12m. For travel, June is one of the best months of the year to visit.
Avg High
74.1°F
Avg Low
62.6°F
Precipitation
0.01 in
Daylight
14h 12m
June records in Costa Mesa
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| June 1 | 87.1°F (2025) | 55.0°F (2011) | 0.03 in (2009) |
| June 2 | 81.0°F (2006) | 54.0°F (2011) | 0.10 in (1999) |
| June 3 | 89.1°F (2006) | 54.0°F (1999) | 0.02 in (1999) |
| June 4 | 80.1°F (2006) | 55.0°F (1999) | 0.00 in (1999) |
| June 5 | 77.0°F (2002) | 54.0°F (1999) | 0.01 in (2020) |
| June 6 | 78.1°F (2000) | 55.9°F (1999) | 0.00 in (1999) |
| June 7 | 77.0°F (2000) | 55.9°F (2007) | 0.01 in (2024) |
| June 8 | 93.0°F (2020) | 57.0°F (1999) | 0.00 in (1999) |
| June 9 | 96.1°F (2020) | 57.9°F (2000) | 0.02 in (2006) |
| June 10 | 93.0°F (2019) | 57.9°F (1999) | 0.00 in (1999) |
| June 11 | 84.9°F (2020) | 55.9°F (2001) | 0.01 in (2016) |
| June 12 | 81.0°F (2021) | 57.9°F (1999) | 0.02 in (2023) |
| June 13 | 79.0°F (2005) | 57.9°F (2017) | 0.00 in (1999) |
| June 14 | 88.0°F (2018) | 59.0°F (1999) | 0.00 in (1999) |
| June 15 | 91.0°F (2021) | 55.9°F (2005) | 0.00 in (1999) |
| June 16 | 84.0°F (2006) | 59.0°F (2016) | 0.00 in (1999) |
| June 17 | 82.9°F (2016) | 60.1°F (1999) | 0.00 in (1999) |
| June 18 | 87.1°F (2008) | 59.0°F (2005) | 0.00 in (1999) |
| June 19 | 95.0°F (2016) | 57.9°F (2005) | 0.00 in (1999) |
| June 20 | 96.1°F (2016) | 59.0°F (1999) | 0.00 in (1999) |
| June 21 | 95.0°F (2008) | 59.0°F (1999) | 0.01 in (2019) |
| June 22 | 90.0°F (2008) | 57.9°F (2007) | 0.00 in (1999) |
| June 23 | 88.0°F (2024) | 57.9°F (1999) | 0.01 in (2003) |
| June 24 | 89.1°F (2024) | 59.0°F (2023) | 0.01 in (2013) |
| June 25 | 93.0°F (2006) | 60.1°F (2005) | 0.00 in (1999) |
| June 26 | 87.1°F (2006) | 57.9°F (2012) | 0.00 in (1999) |
| June 27 | 96.1°F (2006) | 60.1°F (1999) | 0.00 in (1999) |
| June 28 | 90.0°F (2008) | 61.0°F (1999) | 0.00 in (1999) |
| June 29 | 84.0°F (2006) | 61.0°F (1999) | 0.00 in (1999) |
| June 30 | 89.1°F (2015) | 59.0°F (2005) | 0.00 in (1999) |