Macclenny, FL frost dates
Last spring frostMar 8median date
First fall frostDec 1median date
Growing season268 daysfrost-free
Hardiness zone9aZone 9a
How Macclenny compares
- In 8 years out of 10, the last spring frost in Macclenny falls between February 6 and March 31, a 53-day window. The first fall frost falls between November 9 and December 28.
- The median last frost is 5 days later than the Florida median of Mar 3.
- Its 268-day growing season is longer than 36% of the 174 Florida places with a regular frost season (state median 273 days).
- The last frost is 5 days later than the zone 9a median of Mar 3. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 9a chart.
- The weather station records an average of 28 nights a year at or below 32°F.
- Nearby Jacksonville, FL, 46 km away, gets only light, occasional frost, a reminder of how much elevation and distance from the coast matter.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | February 6 |
| 50% (median) | March 8 |
| 10% (safe for tender plants) | March 31 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | November 9 |
| 50% (median) | December 1 |
| 90% (late) | December 28 |
Frost here means 32°F (0°C). A median date means half of years have their last frost earlier and half later.
Planting calendar for Macclenny, FL
Macclenny, FL frost dates — last frost Mar 8, first frost Dec 1, zone 9a. whenisthelastfrost.com
Crop
JFMAMJJASOND
Start indoors: Dec 14 to Dec 28Transplant outside: Feb 8 to Feb 22
Start indoors: Dec 28 to Jan 11Start indoors: Dec 28 to Jan 11Transplant outside: Mar 22 to Apr 5
Start indoors: Dec 28 to Jan 11Start indoors: Dec 28 to Jan 11Transplant outside: Mar 22 to Apr 5
Start indoors: Jan 11 to Jan 25Transplant outside: Mar 15 to Mar 29
Start indoors: Jan 11 to Jan 25Transplant outside: Feb 15 to Mar 1Sow outdoors: Feb 8 to Mar 15Plant for fall: Oct 6 to Nov 3
Start indoors: Jan 11 to Jan 25Transplant outside: Feb 8 to Feb 22Sow outdoors: Feb 8 to Feb 22Plant for fall: Sep 22 to Oct 13
Start indoors: Jan 11 to Jan 25Transplant outside: Feb 22 to Mar 8Plant for fall: Aug 25 to Sep 15
Start indoors: Jan 11 to Jan 25Transplant outside: Feb 15 to Mar 1Plant for fall: Aug 25 to Sep 15
Start indoors: Jan 11 to Jan 25Transplant outside: Feb 22 to Mar 8Plant for fall: Aug 25 to Sep 15
Start indoors: Jan 25 to Feb 8Transplant outside: Mar 29 to Apr 12Sow outdoors: Mar 29 to Apr 12
Start indoors: Jan 25 to Feb 8Transplant outside: Mar 15 to Mar 29
Sow outdoors: Jan 25 to Feb 15Plant for fall: Sep 8 to Sep 29
Sow outdoors: Jan 25 to Feb 15Plant for fall: Oct 6 to Oct 27
Sow outdoors: Feb 1 to Mar 15Plant for fall: Oct 20 to Nov 10
Start indoors: Feb 8 to Feb 15Transplant outside: Mar 22 to Mar 29Sow outdoors: Mar 15 to Mar 29Plant for fall: Sep 15 to Sep 29
Start indoors: Feb 8 to Feb 15Sow outdoors: Mar 15 to Mar 29Plant for fall: Sep 22 to Oct 6
Start indoors: Feb 8 to Feb 15Sow outdoors: Mar 15 to Mar 29
Start indoors: Feb 8 to Feb 15Transplant outside: Mar 22 to Apr 5
Sow outdoors: Feb 15 to Mar 15Plant for fall: Sep 8 to Sep 22
Sow outdoors: Feb 15 to Mar 15Plant for fall: Sep 22 to Oct 6
Sow outdoors: Feb 15 to Mar 8
Sow outdoors: Feb 22 to Mar 22Plant for fall: Sep 22 to Oct 6
Sow outdoors: Feb 22 to Mar 15Plant for fall: Oct 6 to Oct 27
Sow outdoors: Mar 15 to Apr 5Plant for fall: Sep 15 to Sep 29
Sow outdoors: Mar 15 to Mar 29
Transplant outside: Mar 22 to Apr 12
Plant for fall: Nov 17 to Dec 22
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Macclenny, FL
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Dec 14 – Dec 28 | Feb 8 – Feb 22 | — | — |
| Peppers | Dec 28 – Jan 11 | Mar 22 – Apr 5 | — | — |
| Eggplant | Dec 28 – Jan 11 | Mar 22 – Apr 5 | — | — |
| Tomatoes | Jan 11 – Jan 25 | Mar 15 – Mar 29 | — | — |
| Lettuce | Jan 11 – Jan 25 | Feb 15 – Mar 1 | Feb 8 – Mar 15 | Oct 6 – Nov 3 |
| Kale | Jan 11 – Jan 25 | Feb 8 – Feb 22 | Feb 8 – Feb 22 | Sep 22 – Oct 13 |
| Broccoli | Jan 11 – Jan 25 | Feb 22 – Mar 8 | — | Aug 25 – Sep 15 |
| Cabbage | Jan 11 – Jan 25 | Feb 15 – Mar 1 | — | Aug 25 – Sep 15 |
| Cauliflower | Jan 11 – Jan 25 | Feb 22 – Mar 8 | — | Aug 25 – Sep 15 |
| Okra | Jan 25 – Feb 8 | Mar 29 – Apr 12 | Mar 29 – Apr 12 | — |
| Basil | Jan 25 – Feb 8 | Mar 15 – Mar 29 | — | — |
| Peas | — | — | Jan 25 – Feb 15 | Sep 8 – Sep 29 |
| Spinach | — | — | Jan 25 – Feb 15 | Oct 6 – Oct 27 |
| Radishes | — | — | Feb 1 – Mar 15 | Oct 20 – Nov 10 |
| Cucumbers | Feb 8 – Feb 15 | Mar 22 – Mar 29 | Mar 15 – Mar 29 | Sep 15 – Sep 29 |
| Zucchini & Summer Squash | Feb 8 – Feb 15 | — | Mar 15 – Mar 29 | Sep 22 – Oct 6 |
| Winter Squash & Pumpkins | Feb 8 – Feb 15 | — | Mar 15 – Mar 29 | — |
| Melons & Watermelon | Feb 8 – Feb 15 | Mar 22 – Apr 5 | — | — |
| Carrots | — | — | Feb 15 – Mar 15 | Sep 8 – Sep 22 |
| Beets | — | — | Feb 15 – Mar 15 | Sep 22 – Oct 6 |
| Potatoes | — | — | Feb 15 – Mar 8 | — |
| Swiss Chard | — | — | Feb 22 – Mar 22 | Sep 22 – Oct 6 |
| Cilantro | — | — | Feb 22 – Mar 15 | Oct 6 – Oct 27 |
| Green Beans | — | — | Mar 15 – Apr 5 | Sep 15 – Sep 29 |
| Sweet Corn | — | — | Mar 15 – Mar 29 | — |
| Sweet Potatoes | — | Mar 22 – Apr 12 | — | — |
| Garlic | — | — | — | Nov 17 – Dec 22 |
Dates come from the median frost dates and common extension-service timing. Adjust for your soil temperature, microclimate and the varieties you grow.
About these dates
Based on 1991–2020 NOAA climate normals for the Glen St Mary 1 W, FL weather station, 5 km away (elevation 128 ft (39 m)).
Frost dates near Macclenny
- Glen Saint Mary Mar 8 · Dec 1
- Sanderson Mar 8 · Dec 1
- Bryceville Feb 28 · Dec 3
- Raiford Feb 8 · Dec 24
- Lawtey Feb 8 · Dec 24
- Olustee Mar 1 · Nov 28
- Graham Feb 8 · Dec 24
- Middleburg Feb 1 · Jan 5
- Starke Feb 8 · Dec 24
- Lake Butler Feb 8 · Dec 24
Frequently asked questions
When is the last frost in Macclenny, FL?
The median last spring frost in Macclenny, FL is March 8. There is still about a 10% chance of frost after March 31, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Macclenny, FL?
The median first fall frost is December 1, with about a 10% chance of frost before November 9.
How long is the growing season in Macclenny, FL?
About 268 days between the median last spring frost and first fall frost.
What planting zone is Macclenny, FL?
Macclenny, FL is in USDA hardiness zone 9a.