Key West, FL frost dates
Last spring frostRaremost years have none
First fall frostRaremost years have none
Hardiness zone11bZone 11b
Gardening where frost is rare
Key West, 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 Key W Wfo, FL weather station, about 1 km away (elevation 3 ft (1 m)).
ZIP codes in Key West: 33040 33041 33045
Frost dates near Key West
- Summerland Key rare frost
- Big Pine Key rare frost
- Marathon Shores rare frost
- Marathon rare frost
- Key Colony Beach rare frost
- Long Key rare frost
- Islamorada rare frost
- Tavernier rare frost
- Homestead (Miami-Dade) Jan 20 · Jan 17
- Chokoloskee Jan 16 · Jan 14
Frequently asked questions
When is the last frost in Key West, FL?
In most years Key West, 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.