Frost Dates for Jacksonville, FL 32218

Last spring frost February 12 · First fall frost December 24 · 315 frost-free days · USDA Zone 9b

Frost probability for 32218

Frost10%50%90%
Spring (last frost)March 11February 12January 17
Fall (first frost)November 22December 24February 4

Dates come from NOAA 1971–2000 freeze probabilities at the nearest reporting station (28.9 km away); the 50% date is the median year.

Frost dates by ZIP code in Jacksonville, FL

ZIPLast spring frost (50%)First fall frost (50%)Zone
32218February 12December 249b
32210February 26December 39b
32244February 26December 39b
32246February 12December 249b
32256February 8December 319b
32225February 12December 249b
32257February 8December 319b
32216February 12December 249b
32224February 12December 249b
32258February 8December 319b
32207February 12December 249b
32211February 12December 249b
32277February 12December 249b
32209February 12December 249b
32221February 26December 39a
32208February 12December 249b
32205February 12December 249b
32223February 8December 319b
32226February 12December 249b
32217February 12December 249b
32222February 26December 39a
32206February 12December 249b
32219February 26December 39a
32254February 12December 249b
32220February 26December 39a
32234March 6November 259a
32204February 12December 249b
32202February 12December 249b
32227February 12December 249b
32212February 8December 319b
32228February 12December 249b
32203February 12December 249b
32214February 8December 319b

Month by month in Jacksonville

MonthWhat to do
JanuaryStart herbs, basil, and squash indoors (4–6 weeks before frost). Direct sow peas, spinach, and lettuce if soil is workable.
FebruaryLast frost around February 12. Transplant cold-hardy crops (broccoli, kale, cabbage). Harden off tomato and pepper seedlings.
MarchFrost has passed. Transplant tomatoes, peppers, and basil outdoors. Direct sow beans, cucumbers, squash, and zucchini.
AprilSuccession plant lettuce and greens. Keep beds weeded and watered consistently.
MayHarvest regularly to encourage production. Monitor for pests and disease.
JuneMidsummer: harvest beans, zucchini, cucumbers. Start brassica seeds indoors for fall.
JulyDirect sow carrots and beets for fall harvest. Start fall broccoli and kale indoors.
AugustDirect sow carrots and beets for fall harvest. Start fall broccoli and kale indoors.
SeptemberDirect sow carrots and beets for fall harvest. Start fall broccoli and kale indoors.
OctoberDirect sow carrots and beets for fall harvest. Start fall broccoli and kale indoors.
NovemberFirst fall frost approaching (around December 24). Transplant fall brassicas. Sow spinach, arugula, and radishes.
DecemberFirst frost around December 24. Harvest tomatoes and peppers before frost. Cover cold-hardy crops with row covers to extend the season.

What grows in a 315-day season

Frequently Asked Questions

What is the last frost date for Jacksonville, FL (ZIP 32218)?

The median last spring frost date for Jacksonville, FL (ZIP code 32218) is around February 12. This is the 50th-percentile date — meaning half of all years see frost end before this date. Use the 10% and 90% dates to understand the full range of risk in your area.

What is the first fall frost date in Jacksonville, FL?

The median first fall frost date for Jacksonville, FL is around December 24. Plan to harvest or protect frost-sensitive crops like tomatoes and peppers at least a week before this date to avoid losses.

How long is the growing season in Jacksonville, FL?

The frost-free growing season in Jacksonville is about 315 days. This window — from your last spring frost to your first fall frost — is when warm-season vegetables thrive. Cold-hardy crops like kale, spinach, and peas can extend your season by weeks on either side.

What USDA hardiness zone is Jacksonville, FL?

Based on frost date patterns, Jacksonville falls approximately in 9b. USDA hardiness zones are determined by average annual minimum winter temperatures and guide both plant selection and planting timing for your location.

When should I start tomatoes indoors in Jacksonville, FL?

Start tomato seeds indoors 6–8 weeks before your last frost date (around February 12). For Jacksonville, that's roughly December 18 to January 1. Transplant outdoors 1–2 weeks after your last frost.

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