Data: 2023 USDA zones (PRISM/OSU) · NOAA 1991–2020 normals · updated Oct 29, 2026

Planting zone for 31796 — Warwick, GA

ZIP code 31796 (Warwick, Worth County) is in USDA zone 9a: the coldest winter night averages 20 to 25 °F. The median last spring frost is March 9 and the first fall frost November 20.

Where ZIP 31796 is

Outlined: the ZIP code area · tap the map for the zone at any spot · scroll or pinch to zoom

Not the official USDA Plant Hardiness Zone Map. Zones come from the 2023 USDA hardiness-zone data by the PRISM Group, Oregon State University; we re-mapped and recolored them. The official map is at planthardiness.ars.usda.gov.

Zone9a20 to 25 °F

Coldest night−6.7 to −3.9 °C

Last frostMar 9

First frostNov 20

2012 zone8b

Was 8b on the 2012 map — half a zone warmer now. The zone is the one at the center of the ZIP code; hilly ZIPs can span two zones. What zone 9a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Warwick, GA…

Forecast data: National Weather Service (api.weather.gov), public domain. This is not a warning service — for official frost and freeze warnings see weather.gov.

Frost dates in Warwick, GA

JanFebMarAprMayJunJulAugSepOctNovDec

Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free

Last spring frostMarch 9median — 50% chance of a later frost

Safe for tender plantsMarch 27only 10% chance of frost after

First fall frostNovember 20median — 10% chance by Nov 4

Growing season258 daysfrost-free, median

A hard freeze (28 °F) usually ends around February 23 and returns around December 6.

From the NOAA station Crisp Co. Pwr Dam, GA — 6 miles away, elevation 246 ft. NOAA NCEI U.S. Climate Normals 1991–2020, 32 °F threshold. Low spots and valleys can freeze later in spring than the station.

When to plant vegetables in 31796

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Jan 26 – Feb 9

SpinachSow outdoors · Jan 26 – Feb 16

Broccoli, cabbageStart indoors · Dec 29 – Jan 12

Broccoli, cabbageTransplant · Feb 16 – Mar 2

Onion setsPlant outdoors · Feb 9 – Feb 23

PotatoesPlant outdoors · Feb 16 – Mar 2

LettuceSow outdoors · Feb 9 – Feb 23

Carrots, beetsSow outdoors · Feb 16 – Mar 2

TomatoesStart indoors · Jan 12 – Jan 26

TomatoesTransplant · Mar 16 – Mar 30

Peppers, eggplantStart indoors · Dec 29 – Jan 12

Peppers, eggplantTransplant · Mar 23 – Apr 6

BeansSow outdoors · Mar 16 – Mar 30

Sweet cornSow outdoors · Mar 16 – Mar 30

Cucumbers, squashSow outdoors · Mar 16 – Mar 30

Fall lettuce, spinachSow outdoors · Sep 25 – Oct 9

GarlicPlant cloves · Nov 6 – Dec 11

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Mar 9) and first fall frost (Nov 20) with the rules of thumb U.S. extension services publish. Cool-season crops take a light frost; warm-season crops do best once the soil is above about 60 °F.

When spring arrived in 2026

In 2026, spring leaf-out near 31796 came on Jan 28 — 3 days earlier than the 1991–2020 average (Jan 31).

average
Jan 312026
Jan 28

JanFebMarAprMayJun

The Spring Index marks the day when accumulated warmth is enough for lilac and honeysuckle to leaf out — a widely used signal that the growing season has started. Source: USA National Phenology Network, www.usanpn.org — Spring Indices, first leaf, 2026 (data as of 2026-09-08) and 30-year average 1991–2020 (CC BY 4.0).

Native plants for zone 9a in Georgia

603 plants native to the lower 48 states, recorded in Georgia, and rated by the USDA to survive 20 °F or colder — the bottom of zone 9a. Each links to its USDA PLANTS profile.

Source: USDA, NRCS. 2026. The PLANTS Database (plants.usda.gov), National Plant Data Team — state distribution, native status and the “Temperature, Minimum” characteristic. Check light, moisture and soil needs before buying; local nurseries and your state native plant society can confirm what thrives in Warwick, GA.

Soil in Warwick, GA

The soil mapped at the center of ZIP 31796 is Stilson — loamy sand, moderately well drained.

TextureLoamy sanddrains and warms fast; dries out and needs more feeding

pH5.5moderately acidic; most vegetables like 6.0–7.0

DrainageModerately well drainednatural drainage class

Organic matter1%low — add compost

Hydrologic groupAwater soaks in fast

Farmland classFarmland of statewide importanceUSDA classification

Map unit: Stilson loamy sand, 0 to 2 percent slopes.

Soil Survey Staff, Natural Resources Conservation Service, USDA. Soil Survey Geographic (SSURGO) Database, via Soil Data Access, accessed 2026-10-29. The soil at the center point of ZIP 31796; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Warwick, GA

Summer high92 °Faverage high, July

Winter low37 °Faverage low, January

Hot days83days a year at 90 °F or more

Freezing nights36nights a year at 32 °F or less

Growing degree days6,198base 50 °F — the season’s usable heat

Longest day14 h 14 mindaylight on June 21

Shortest day10 h 04 mindaylight on December 21

Onions to growShort-daysummer days stay under about 14 h 20 min, so long-day varieties won’t bulb

Precipitation48.9 inper year, rain and melted snow

Average high and low, by month

Precipitation by month inches

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Crisp Co. Pwr Dam, GA (6 mi away); precipitation: Crisp Co. Pwr Dam, GA (6 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

4 of the 8 nearest ZIP codes are in a different zone — elevation and distance from water change winter lows quickly.

Georgia planting zones →

Questions about 31796

What planting zone is ZIP code 31796?

ZIP code 31796 (Warwick, GA) is in USDA hardiness zone 9a on the 2023 map: the coldest night of an average winter reaches 20 to 25 °F (−6.7 to −3.9 °C).

When is the last frost in Warwick, GA?

The median last spring frost (32 °F) near 31796 is March 9; after March 27 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Crisp Co. Pwr Dam station.

When is the first frost in Warwick, GA?

The median first fall frost near 31796 is November 20, giving a median frost-free growing season of 258 days.

When should I plant tomatoes in 31796?

Start tomato seeds indoors around Jan 12 – Jan 26 and set transplants outside around Mar 16 – Mar 30, one to three weeks after the median last frost.

How much rain and snow does 31796 get?

About 48.9 inches of precipitation a year (NOAA 1991–2020 normals, Crisp Co. Pwr Dam station).

How hot do summers get in Warwick, GA?

The average high peaks at 92 °F in July, with about 83 days a year at 90 °F or more.

What kind of soil does 31796 have?

The USDA soil survey maps Stilson at the center of ZIP 31796: loamy sand, moderately well drained, pH about 5.5 (moderately acidic).

Did spring come early in Warwick, GA in 2026?

Spring leaf-out near 31796 came on Jan 28 in 2026, 3 days earlier than the 1991–2020 average (Jan 31), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Warwick, GA?

Short-day onions: the longest day near 31796 is 14 h 14 min, so summer days stay under about 14 h 20 min, so long-day varieties won’t bulb.

Did the zone for 31796 change?

Yes. The 2012 USDA map put 31796 in zone 8b; the 2023 map puts it in zone 9a. The newer map uses 1991–2020 data and more weather stations.