US Grow Zones

Warner Robins, Georgia: planting zone & frost dates

Last updated · Sources: PRISM/OSU 2023 ZIP zone listings; NOAA NCEI 1991–2020 Climate Normals (station USC00099124); U.S. Census Bureau — see methodology

Warner Robins is in USDA plant hardiness zone 8b, where the average coldest winter night reaches 15 to 20°F (-9.4 to -6.7°C). The typical last spring frost is around Mar 20 and the first fall frost around Nov 12.

Hardiness zone8B15 to 20°F
Last spring frostMar 2030% chance of frost after
First fall frostNov 1230% chance of frost before
Growing season256 daysmedian frost-free days

Frost dates

ProbabilityLast spring frost (32°F)First fall frost (32°F)
Safer (10% risk)Mar 31Nov 4
Typical planning date (30% risk)Mar 20Nov 12
Median (50%)Mar 11Nov 19

How to read this: after the spring "10% risk" date, a 32°F frost happens in only about 1 year in 10. In fall, the "10% risk" date is the early end — a frost before it happens about 1 year in 10.

Frost data comes from NOAA station WARNER ROBINS, GA (USC00099124), 2.4 mi (3.8 km) from the city center and about the same elevation as the city center (-0 m). Record used for the 1991–2020 normals: 19 years.

Frost probability in spring and fall, Warner Robins, GAChance of a 32°F frost in Warner Robins, GA, NOAA 1991–2020. Spring: the chance of another frost falls from 90% on Feb 15 to 10% on Mar 31. Fall: the chance that the first frost has arrived rises from 10% on Nov 4 to 90% on Dec 9.0%50%100%Spring: later frostFeb 1Mar 1Apr 130%: Mar 20Fall: frost arrivedNov 1Dec 1Jan 130%: Nov 1232°F frost28°F hard freezeplanning date
Shaded areas show the chance of a 32°F frost: falling through spring, rising through fall. The dashed line is the 28°F hard-freeze curve. Data: NOAA 1991–2020 Normals, station USC00099124.
Frost-free growing season in Warner Robins, GA1 in 10 risk: Mar 31 to Nov 4 (218 days); 3 in 10 risk: Mar 20 to Nov 12 (237 days); Median (50%): Mar 11 to Nov 19 (253 days); No 28°F freeze: Feb 24 to Dec 4 (283 days). In 9 of 10 years the 32°F-free season is at least 229 days.Frost-free days, spring to fallJFMAMJJASOND1 in 10 risk218 days3 in 10 risk237 daysMedian (50%)253 daysNo 28°F freeze283 days
Frost-free window at three risk levels, plus the window between 28°F hard freezes. Read about what the probabilities mean.

Why your yard may differ from the station: microclimates.

Hardiness zone across Warner Robins

All 7 ZIP codes covering Warner Robins are in zone 8b.

ZIP codes in Warner Robins and their zones
ZIPZoneShare of city land
310888b49.6%
310938b21.2%
310058b10.4%
310088b7.6%
310478b5.2%
310988b4.0%
310308b2.0%

Vegetable planting calendar for Warner Robins

Dates are counted from the 30%-risk frost dates above (last frost Mar 20, first frost Nov 12). Shift a week later in cold spots or low-lying ground.

CropStart indoorsTransplant / plant outDirect sowFall crop sow/plant
TomatoJan 23 – Feb 6Mar 27 – Apr 10——
PepperJan 9 – Jan 23Apr 3 – Apr 17——
LettuceFeb 6 – Feb 20Mar 6 – Mar 27Feb 20 – Apr 3Sep 3 – Oct 1
Green Beans——Mar 27 – May 1Aug 20 – Sep 3
Sweet Corn——Mar 27 – Apr 24—
Zucchini & Summer SquashFeb 20 – Feb 27Mar 27 – Apr 10Mar 27 – Apr 17Aug 20 – Sep 3
CucumberFeb 20 – Feb 27Apr 3 – Apr 10Mar 27 – Apr 17Aug 20 – Sep 3
Carrot——Feb 27 – Apr 3Aug 20 – Sep 3
OnionDec 26 – Jan 9Feb 20 – Mar 6——
Potato—Feb 20 – Mar 13——
BasilFeb 6 – Feb 20Apr 3 – Apr 17Apr 3 – Apr 24—
Spinach——Feb 6 – Mar 6Sep 17 – Oct 15
KaleJan 23 – Feb 6Feb 20 – Mar 13Feb 20 – Mar 13Sep 3 – Oct 1
BroccoliJan 23 – Feb 6Mar 6 – Mar 27—Aug 20 – Sep 3
Peas——Feb 6 – Feb 27Sep 3 – Sep 17
EggplantJan 9 – Jan 23Apr 3 – Apr 17——
CabbageJan 23 – Feb 6Feb 20 – Mar 6—Aug 20 – Sep 3
Radish——Feb 13 – Apr 3Oct 1 – Oct 29
Strawberry—Feb 20 – Mar 13——
Beets——Feb 27 – Apr 10Sep 3 – Sep 17

Nearby cities in Georgia

More: all Georgia cities · other zone 8b cities: Dallas, TX, Fort Worth, TX, El Paso, TX, Virginia Beach, VA, Arlington, TX, Plano, TX, Irving, TX, Garland, TX

Warner Robins gardening questions

When is the last frost in Warner Robins, GA?

Plan around Mar 20. At NOAA's Warner Robins, GA station, 2.4 mi from the city center, there is a 30% chance of a 32°F frost after that date. Half of springs have their last frost by Mar 11, and after Mar 31 the risk drops to about 1 in 10. A hard freeze (28°F) usually ends earlier, around Feb 24. The 90% and 10% dates are 44 days apart, close to the 36-day median for cities on this site.

When should I plant tomatoes in Warner Robins, GA?

Start seeds indoors Jan 23 – Feb 6 and set transplants outside Mar 27 – Apr 10, once nights stay above 50°F and the soil is near 60°F. That leaves 237 days between the 30% frost dates, enough for most varieties including 80–85-day slicers. More: tomato planting dates by zone.

How long is the growing season in Warner Robins?

About 256 days without a 32°F frost in a typical (median) year. In 9 years out of 10 the season lasts at least 229 days, and in 1 year in 10 it runs 285 days or more. In fall there is a 10% chance of frost by Nov 4 and a 30% chance by Nov 12. That ranks 4th longest of 12 Georgia cities on this site.

When should I plant a fall garden in Warner Robins?

Count back from the first fall frost (Nov 12): transplant broccoli Aug 20 – Sep 3; sow kale Sep 3 – Oct 1; sow lettuce Sep 3 – Oct 1; sow radishes Oct 1 – Oct 29. Hardy crops keep growing through light frosts; the median 28°F hard freeze here is Dec 4. How the math works: succession and fall planting.

Did Warner Robins's hardiness zone change on the 2023 map?

Yes. Most of Warner Robins was zone 8a on the 2012 map and is zone 8b on the 2023 map — half a zone warmer, like about 56% of U.S. ZIP codes. The shift comes from a newer 1991–2020 averaging period plus more weather stations and better mapping; it does not mean last frost comes earlier. Why the 2023 map is warmer.

How does Warner Robins compare with Macon, GA?

Both are in zone 8b. The typical last spring frost in Warner Robins (Mar 20) comes about 9 days earlier than in Macon, GA (Mar 29), 15 miles away, and the first fall frost is Nov 12 versus Nov 4. The two cities use different NOAA stations.