Last Frost Date Costa Mesa: Frost Dates, Late Frost Risk & Growing Season

When is the last spring frost and the first autumn frost in Costa Mesa? Frost dates from 30 years of data, the risk of late frost, frost-free days and planting dates.

• Costa Mesa is practically frost-free

• Sunrise and Sunset in Costa Mesa Today
• When does it get dark in Costa Mesa?
• Moonrise and Moonset Costa Mesa Today
• Sunrise and Sunset Costa Mesa November 2026