Key Largo, FL frost dates
Last spring frostRaremost years have none
First fall frostRaremost years have none
Hardiness zone11aZone 11a
Gardening where frost is rare
Key Largo, 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.
How Key Largo compares
- Nearby Homestead, FL, 47 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 Tavernier, FL weather station, 12 km away (elevation 7 ft (2 m)).
Frost dates near Key Largo
- Tavernier rare frost
- Islamorada rare frost
- Homestead (Miami-Dade) Jan 20 · Jan 17
- Long Key rare frost
- Homestead Jan 18 · Jan 13
- Key Colony Beach rare frost
- Marathon rare frost
- Coral Gables rare frost
- Key Biscayne rare frost
- Marathon Shores rare frost
Frequently asked questions
When is the last frost in Key Largo, FL?
In most years Key Largo, 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.