Frost Dates for 32224 — Jacksonville, Florida

Half of springs at Jacksonville Craig Municipal Airport, FL see their last 32°F night by February 9; only one in ten is past it by January 12, and one in ten still has one after March 7. Planting tender crops after February 23 leaves a 30% risk of a frost on them, after March 1 20%, and after March 7 10%. The 26 days between the even-odds date and the one-in-ten date is wider than at 52% of the 101 Florida stations behind this site's ZIP pages, so a fixed calendar date is a gamble here.

In fall the first 32°F night comes by December 31 in half of years, as early as November 30 one year in ten, and holds off past January 31 one year in ten. A hard freeze of 28°F follows 8 days later, around January 8; in spring the one-in-ten date for 28°F is February 24, 11 days before the 32°F one. The freeze-free season lasts 314 days in a typical year, longer than at 55% of the 102 Florida stations; it reaches 353 days one year in ten and falls short of 280 one year in ten. On average 7 nights a year drop to 32°F or below. Nights of 36°F, when frost can still settle on leaves in low, open spots, continue 20 days longer, to about March 1, and return around December 6. A 24°F night is unusual: 26% of winters had one.

July is the warmest month at Jacksonville Craig Municipal Airport, FL, averaging 91°F by day and 73°F at night; January is the coldest at 65°F and 45°F. From April to October the chance of a 32°F night stays under 10% each month. In spring, February still brings one in 54% of years and March still brings one in 19% of years.

Warmth for growing adds up to 7,243 growing degree days a year (base 50°F), fewer than at 73% of the 158 Florida stations. 42% of them (3,051) have built up by the end of June, and July adds the most, 998. Precipitation totals 51.8 inches a year, most in September (7.3") and least in February (2.4"); May to September bring 57% of it.

The nearest other station, Jacksonville Beach, FL, 5 miles east of Jacksonville, has a last frost 9 days earlier (January 31), a first frost 10 days later (January 10), a season 31 days longer.

Measurable snow is rare here: only 0 of 20 winters from 1991 to 2020 recorded 0.1 inch or more at Jacksonville Beach, FL, 4.6 miles away, so there is no typical first-snow date to plan around.

ZIP 32224 is 4 miles from Jacksonville Craig Municipal Airport, FL, which stands at 41 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 6 other ZIP codes share the station; its figures are presented in full for 32246 (Jacksonville). The 2023 USDA Plant Hardiness Zone Map lists ZIP 32224 in zone 9b, the band where the coldest night of the year averaged 25 to 30°F (-3.9 to -1.1°C) over 1991–2020; a zone describes winter lows, not frost dates.