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

Planting zone for Lithonia, GA

Lithonia, GA is in USDA zone 8a across its 2 ZIP codes. The median last spring frost is March 31 and the first fall frost November 6.

Lithonia on the zone map

Outlined: its 2 ZIP code areas · 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.

Zone8a10 to 15 °F

ZIP codes2

Last frostMar 31

First frostNov 6

Growing season220 days

8a 2 ZIPs

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Lithonia, 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 Lithonia, GA

JanFebMarAprMayJunJulAugSepOctNovDec

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

Last spring frostMarch 31median — 50% chance of a later frost

Safe for tender plantsApril 16only 10% chance of frost after

First fall frostNovember 6median — 10% chance by Oct 24

Growing season220 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 16 and returns around November 17.

From the NOAA station Mcdonough 5 Ene, GA, elevation 709 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 Lithonia

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Feb 17 – Mar 3

SpinachSow outdoors · Feb 17 – Mar 10

Broccoli, cabbageStart indoors · Jan 20 – Feb 3

Broccoli, cabbageTransplant · Mar 10 – Mar 24

Onion setsPlant outdoors · Mar 3 – Mar 17

PotatoesPlant outdoors · Mar 10 – Mar 24

LettuceSow outdoors · Mar 3 – Mar 17

Carrots, beetsSow outdoors · Mar 10 – Mar 24

TomatoesStart indoors · Feb 3 – Feb 17

TomatoesTransplant · Apr 7 – Apr 21

Peppers, eggplantStart indoors · Jan 20 – Feb 3

Peppers, eggplantTransplant · Apr 14 – Apr 28

BeansSow outdoors · Apr 7 – Apr 21

Sweet cornSow outdoors · Apr 7 – Apr 21

Cucumbers, squashSow outdoors · Apr 7 – Apr 21

Fall lettuce, spinachSow outdoors · Sep 11 – Sep 25

GarlicPlant cloves · Oct 23 – Nov 27

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Mar 31) and first fall frost (Nov 6) 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 30058 came on Feb 15 — 3 days later than the 1991–2020 average (Feb 12).

average
Feb 122026
Feb 15

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 8a in Georgia

572 plants native to the lower 48 states, recorded in Georgia, and rated by the USDA to survive 10 °F or colder — the bottom of zone 8a. 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 Lithonia, GA.

Soil in Lithonia, GA

The center of ZIP 30058 is mapped as Urban land: built-over ground without natural soil data. Garden soil here is usually imported or disturbed — test before you plant.

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 30058; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Lithonia, GA

Summer high89 °Faverage high, July

Winter low33 °Faverage low, January

Hot days53days a year at 90 °F or more

Freezing nights49nights a year at 32 °F or less

Growing degree days5,025base 50 °F — the season’s usable heat

Longest day14 h 24 mindaylight on June 21

Shortest day9 h 55 mindaylight on December 21

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

Precipitation51.2 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: Atlanta Peachtree Airport, GA (15 mi away); precipitation: Loganville 4.5 Sw, GA (9 mi away). Daylight is calculated from latitude.

ZIP codes in Lithonia

Georgia planting zones →

Questions about Lithonia

What planting zone is Lithonia, GA?

Lithonia, GA is in USDA hardiness zone 8a on the 2023 map (8a: 10 to 15 °F).

When is the last frost in Lithonia, GA?

The median last spring frost is March 31 and the median first fall frost is November 6 (NOAA 1991–2020 normals, Mcdonough 5 Ene station).

When can I plant a garden in Lithonia, GA?

Cool-season crops like peas and spinach go in around Feb 17 – Mar 10; tomatoes, peppers, beans and squash after about Apr 7, once frost risk has passed.

What kind of onions grow in Lithonia, GA?

Intermediate onions: the longest day is 14 h 24 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

How much rain and snow does Lithonia, GA get?

About 51.2 inches of precipitation a year (NOAA 1991–2020 normals).