Marathon, FL frost dates
Last spring frostRaremost years have none
First fall frostRaremost years have none
Hardiness zone11bZone 11b
Gardening where frost is rare
Marathon, 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 Marathon compares
- Nearby Homestead, FL, 106 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 Marathon Ap, FL weather station, about 1 km away (elevation 7 ft (2 m)).
Frost dates near Marathon
- Key Colony Beach rare frost
- Marathon Shores rare frost
- Long Key rare frost
- Big Pine Key rare frost
- Islamorada rare frost
- Summerland Key rare frost
- Tavernier rare frost
- Key Largo rare frost
- Homestead (Miami-Dade) Jan 20 · Jan 17
- Key West rare frost
Frequently asked questions
When is the last frost in Marathon, FL?
In most years Marathon, 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.