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Jacksonville, Florida frost dates

Average last spring frost: February 25. Average first fall frost: December 7. That gives a growing season of about 288 days. For frost-tender plants, a safer planting date is March 19, after which a freeze happens in only 1 year in 10.
Last frost (50%)
Feb 25
1-in-10 risk after Mar 19
First frost (50%)
Dec 7
1-in-10 risk before Nov 17
Growing season
288 days
median frost-free days
Hard freeze (28°F)
Feb 4
median last 28°F in spring

Frost risk by date

Chance of frostSpring: frost afterFall: frost before
90%January 22January 10
70%February 13December 22
50%February 25December 7
30%March 7November 29
10%March 19November 17

Read the spring column like this: there is a 10% chance of a 32°F freeze after March 19. These are NOAA probabilities for the Jacksonville weather station (USW00013889, elevation 10 m), 1991–2020.

Jacksonville vegetable planting calendar

Dates count from the 50% last-frost date (February 25). For tomatoes, peppers and other frost-tender crops, waiting until the 10% date (Mar 19) is the cautious choice.

CropStart seeds indoorsPlant out
BeansFeb 4Mar 4 (usually sown directly in the garden)
BroccoliDec 17Jan 28
Brussels sproutsDec 17Jan 28
CabbageDec 10Jan 21
CauliflowerDec 31Feb 11
Sweet cornJan 28Feb 25 (usually sown directly in the garden)
CucumbersFeb 11Mar 4
KaleDec 10Jan 21
LeeksNov 12Jan 21
LettuceJan 7Feb 11
MelonsFeb 18Mar 11
OnionsNov 5Jan 14 (from seed; sets and transplants go out at the same time)
PeasDec 31Jan 28 (usually sown directly in the garden)
PeppersJan 14Mar 11
SquashFeb 18Mar 11
TomatoesDec 31Feb 25

Offsets from Oregon State University Extension's seed-starting table. "Plant out" means transplant, or sow directly for crops usually grown from seed.

Fall frost and season extension

The first fall freeze usually arrives around December 7. There's a 1-in-10 chance it comes before November 17. Harvest tender crops such as basil, tomatoes, peppers and squash before then, or cover them on cold nights. Cool-season crops like kale, cabbage and Brussels sprouts handle light frost, and often taste sweeter after it. A hard freeze (28°F) typically comes around January 2.

Nearby cities

CityLast frost (50%)First frost (50%)Distance
Savannah, GAMar 2Nov 30~189 km
Orlando, FLJan 25Jan 10~230 km
Tallahassee, FLMar 11Nov 21~251 km
Tampa, FLJan 20Jan 12~291 km
Charleston, SCMar 7Nov 27~312 km
Columbia, SCMar 25Nov 7~389 km

More: all Florida frost dates