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

Planting zone for 31016 — Culloden, GA

ZIP code 31016 (Culloden, Monroe County) is in USDA zone 8b: the coldest winter night averages 15 to 20 °F. The median last spring frost is March 23 and the first fall frost November 12.

Where ZIP 31016 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.

Zone8b15 to 20 °F

Coldest night−9.4 to −6.7 °C

Last frostMar 23

First frostNov 12

2012 zone8a

Was 8a 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 8b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Culloden, 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 Culloden, GA

JanFebMarAprMayJunJulAugSepOctNovDec

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

Last spring frostMarch 23median — 50% chance of a later frost

Safe for tender plantsApril 11only 10% chance of frost after

First fall frostNovember 12median — 10% chance by Oct 31

Growing season234 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 10 and returns around November 26.

From the NOAA station Thomaston 4se, GA — 11 miles away, elevation 620 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 31016

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Feb 9 – Feb 23

SpinachSow outdoors · Feb 9 – Mar 2

Broccoli, cabbageStart indoors · Jan 12 – Jan 26

Broccoli, cabbageTransplant · Mar 2 – Mar 16

Onion setsPlant outdoors · Feb 23 – Mar 9

PotatoesPlant outdoors · Mar 2 – Mar 16

LettuceSow outdoors · Feb 23 – Mar 9

Carrots, beetsSow outdoors · Mar 2 – Mar 16

TomatoesStart indoors · Jan 26 – Feb 9

TomatoesTransplant · Mar 30 – Apr 13

Peppers, eggplantStart indoors · Jan 12 – Jan 26

Peppers, eggplantTransplant · Apr 6 – Apr 20

BeansSow outdoors · Mar 30 – Apr 13

Sweet cornSow outdoors · Mar 30 – Apr 13

Cucumbers, squashSow outdoors · Mar 30 – Apr 13

Fall lettuce, spinachSow outdoors · Sep 17 – Oct 1

GarlicPlant cloves · Oct 29 – Dec 3

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Mar 23) and first fall frost (Nov 12) 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 31016 came on Feb 12 — 8 days later than the 1991–2020 average (Feb 4).

average
Feb 42026
Feb 12

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 8b in Georgia

590 plants native to the lower 48 states, recorded in Georgia, and rated by the USDA to survive 15 °F or colder — the bottom of zone 8b. 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 Culloden, GA.

Soil in Culloden, GA

The soil mapped at the center of ZIP 31016 is Pacolet — sandy clay loam, well drained.

TextureSandy clay loamholds water and nutrients; slow to drain and warm up

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

DrainageWell drainednatural drainage class

Organic matter0.75%low — add compost

Hydrologic groupBwater soaks in moderately

Farmland classNot prime farmlandUSDA classification

Map unit: Pacolet sandy clay loam, 10 to 15 percent slopes, moderately eroded.

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 31016; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Culloden, GA

Summer high91 °Faverage high, July

Winter low33 °Faverage low, January

Hot days62days a year at 90 °F or more

Freezing nights50nights a year at 32 °F or less

Growing degree days5,500base 50 °F — the season’s usable heat

Longest day14 h 19 mindaylight on June 21

Shortest day9 h 59 mindaylight on December 21

Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully

Precipitation50.5 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: Thomaston 4se, GA (11 mi away); precipitation: Thomaston 4se, GA (11 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 8b.

310978b

Yatesville, GA · 6 mi

Knoxville, GA · 12 mi

302868b

Thomaston, GA · 14 mi

Barnesville, GA · 16 mi

Georgia planting zones →

Questions about 31016

What planting zone is ZIP code 31016?

ZIP code 31016 (Culloden, GA) is in USDA hardiness zone 8b on the 2023 map: the coldest night of an average winter reaches 15 to 20 °F (−9.4 to −6.7 °C).

When is the last frost in Culloden, GA?

The median last spring frost (32 °F) near 31016 is March 23; after April 11 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Thomaston 4se station.

When is the first frost in Culloden, GA?

The median first fall frost near 31016 is November 12, giving a median frost-free growing season of 234 days.

When should I plant tomatoes in 31016?

Start tomato seeds indoors around Jan 26 – Feb 9 and set transplants outside around Mar 30 – Apr 13, one to three weeks after the median last frost.

How much rain and snow does 31016 get?

About 50.5 inches of precipitation a year (NOAA 1991–2020 normals, Thomaston 4se station).

How hot do summers get in Culloden, GA?

The average high peaks at 91 °F in July, with about 62 days a year at 90 °F or more.

What kind of soil does 31016 have?

The USDA soil survey maps Pacolet at the center of ZIP 31016: sandy clay loam, well drained, pH about 5.5 (moderately acidic).

Did spring come early in Culloden, GA in 2026?

Spring leaf-out near 31016 came on Feb 12 in 2026, 8 days later than the 1991–2020 average (Feb 4), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Culloden, GA?

Intermediate onions: the longest day near 31016 is 14 h 19 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

Did the zone for 31016 change?

Yes. The 2012 USDA map put 31016 in zone 8a; the 2023 map puts it in zone 8b. The newer map uses 1991–2020 data and more weather stations.