La Jolla, CA frost dates
Last spring frostRaremost years have none
First fall frostRaremost years have none
Hardiness zone10bZone 10b
Gardening where frost is rare
La Jolla, 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.
About these dates
Based on 1991–2020 NOAA climate normals for the San Diego Seaworld, CA weather station, 10 km away (elevation 13 ft (4 m)).
ZIP codes in La Jolla: 92037 92038 92039 92092 92093
Frost dates near La Jolla
- Del Mar rare frost
- San Diego rare frost
- Solana Beach rare frost
- Cardiff By The Sea rare frost
- Rancho Santa Fe Jan 5 · Jan 2
- Coronado rare frost
- Encinitas rare frost
- La Mesa Jan 6 · Dec 21
- National City rare frost
- Lemon Grove Jan 6 · Dec 21
Frequently asked questions
When is the last frost in La Jolla, CA?
In most years La Jolla, 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.