Jacksonville Craig Municipal Airport, FL Frost Dates & Growing Season

The two dates every Jacksonville Craig Municipal Airport garden is planned around, plus ready-computed planting windows for the most popular crops.

Last spring frost
Feb 9
~50% chance of frost after
First fall frost
Dec 31
~50% chance of frost before
Growing season
325 days
frost-free stretch
USDA zone
≈ 9b
estimated from nearby reference
Risky (1 year in 10)MedianSafe (9 years in 10)
Last spring frost Jan 12 Feb 9 Mar 7
First fall frost Jan 31 Dec 31 Nov 30
Hard freeze (28°F), median last Jan 26 · first Jan 8

Computed from NOAA 1991–2020 climate normals at the JACKSONVILLE CRAIG MUNI AP station. "Safe" means frost past that date happens only about one year in ten. Your exact garden can still run days either way with elevation and terrain — check your own ZIP with the frost date lookup.

Planting windows for Jacksonville Craig Municipal Airport

Computed from Jacksonville Craig Municipal Airport's own frost dates. Click any crop for the full zone-9 growing guide — varieties, spacing, fall plantings, and more.

CropStart seeds indoorsTransplantDirect sow
🍅 Tomatoes Dec 15 – Dec 29 Feb 16 – Feb 23
🫑 Peppers Dec 1 – Dec 15 Feb 23 – Mar 2
🥬 Lettuce Dec 29 – Jan 12 Jan 12 – Jan 26 Jan 12 – Feb 9
🫛 Peas Dec 29 – Jan 12
🥕 Carrots Jan 19 – Feb 9
🥦 Broccoli Dec 22 – Jan 5 Jan 19 – Feb 2
🥬 Kale Dec 29 – Jan 12 Jan 12 – Jan 26 Jan 12 – Jan 26
🥒 Cucumbers Jan 12 – Jan 19 Feb 16 – Feb 23 Feb 16 – Feb 23
🥒 Zucchini Jan 12 – Jan 19 Feb 16 – Feb 23 Feb 16 – Feb 23
🫘 Green Beans (Bush) Feb 16 – Feb 23
🌽 Sweet Corn Feb 16 – Feb 23
🌿 Basil Dec 29 – Jan 12 Feb 16 – Feb 23 Feb 23 – Mar 2
🧄 Garlic Fall: Nov 19 – Dec 17

Want this for all 50 crops, or as a printable seed-shelf schedule? Use the planting calendar and the seed starting scheduler — both can use Jacksonville Craig Municipal Airport's dates automatically after a lookup.

Reading the season in Jacksonville Craig Municipal Airport

With roughly 325 frost-free days, Jacksonville Craig Municipal Airport gardens fit long-season crops — melons, winter squash, sweet potatoes — with room left for spring and fall rounds of greens and roots. The first frost around Dec 31 is late enough that fall planting is a full second season, not an afterthought.

Frequently asked questions

When is the last frost in Jacksonville Craig Municipal Airport, FL?

The average last spring frost in Jacksonville Craig Municipal Airport is around Feb 9, based on 1991–2020 climate normals. That's a median — about half of years see a later frost, so tender crops are safest going out a week or two after this date.

When is the first frost in Jacksonville Craig Municipal Airport, FL?

The average first fall frost in Jacksonville Craig Municipal Airport arrives around Dec 31. Crops still in the garden need to mature before then, and frost-tender plants need harvesting or protection as the date approaches.

How long is the growing season in Jacksonville Craig Municipal Airport?

About 325 frost-free days on average, from Feb 9 to Dec 31. That comfortably fits long-season crops like melons and winter squash, plus spring and fall plantings of cool-season vegetables.

What USDA zone is Jacksonville Craig Municipal Airport in?

USDA zone 9b on the 2023 Plant Hardiness Zone Map. Note that zones describe winter cold, not frost timing — these frost dates are the numbers to plan plantings around.