Key Biscayne, FL frost dates
Last spring frostRaremost years have none
First fall frostRaremost years have none
Hardiness zone11aZone 11a
Gardening where frost is rare
Key Biscayne, FL 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 Cape Florida, FL weather station, 2 km away (elevation 7 ft (2 m)).
Frost dates near Key Biscayne
- Coral Gables rare frost
- Miami Beach rare frost
- Miami rare frost
- Hialeah rare frost
- Opa Locka rare frost
- North Miami Beach rare frost
- Miami Gardens rare frost
- Hallandale rare frost
- Homestead Jan 18 · Jan 13
- Hollywood rare frost
Frequently asked questions
When is the last frost in Key Biscayne, FL?
In most years Key Biscayne, FL 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.