Newport Coast, CA frost dates
Last spring frostRaremost years have none
First fall frostRaremost years have none
Hardiness zone10bZone 10b
Gardening where frost is rare
Newport Coast, CA rarely or never drops to freezing, so the usual "plant after the last frost" rule doesn't apply. Heat and rainfall decide the seasons instead:
- Cool-season crops (lettuce, broccoli, peas, carrots) grow best from fall through late winter.
- Warm-season crops (tomatoes, peppers, beans, squash) do best planted in late winter to spring, and again in late summer for a fall crop — midsummer heat can stop tomatoes setting fruit.
- Heat lovers (okra, sweet potatoes, melons) can be planted through spring and early summer.
How Newport Coast compares
- Nearby Aliso Viejo, CA, 6 km away, gets only light, occasional frost, a reminder of how much elevation and distance from the coast matter.
About these dates
Based on 1991–2020 NOAA climate normals for the Newport Beach Harbor, CA weather station, 5 km away (elevation 10 ft (3 m)).
Frost dates near Newport Coast
- Corona Del Mar rare frost
- Aliso Viejo Jan 6 · Jan 2
- Newport Beach rare frost
- Laguna Beach Jan 6 · Jan 2
- Irvine Jan 5 · Dec 25
- Costa Mesa rare frost
- Laguna Woods Jan 6 · Jan 2
- East Irvine Jan 5 · Dec 25
- Laguna Hills Jan 6 · Jan 2
- El Toro Jan 5 · Dec 25
Frequently asked questions
When is the last frost in Newport Coast, CA?
In most years Newport Coast, CA has no frost at all. The nearest NOAA station averages 0 nights a year at or below 32°F — too few to calculate a typical frost date.