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

Planting zone for 30045 — Lawrenceville, GA

ZIP code 30045 (Lawrenceville, Gwinnett County) is in USDA zone 8a: the coldest winter night averages 10 to 15 °F. The median last spring frost is April 3 and the first fall frost November 7.

Where ZIP 30045 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.

Zone8a10 to 15 °F
Coldest night−12.2 to −9.4 °C
Last frostApr 3
First frostNov 7
2012 zone7b

Was 7b 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 8a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Lawrenceville, 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 Lawrenceville, GA

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 3median — 50% chance of a later frost
Safe for tender plantsApril 17only 10% chance of frost after
First fall frostNovember 7median — 10% chance by Oct 27
Growing season219 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 22 and returns around November 20.

From the NOAA station Winder 4s, GA — 12 miles away, elevation 889 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 30045

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Feb 20 – Mar 6
SpinachSow outdoors · Feb 20 – Mar 13
Broccoli, cabbageStart indoors · Jan 23 – Feb 6
Broccoli, cabbageTransplant · Mar 13 – Mar 27
Onion setsPlant outdoors · Mar 6 – Mar 20
PotatoesPlant outdoors · Mar 13 – Mar 27
LettuceSow outdoors · Mar 6 – Mar 20
Carrots, beetsSow outdoors · Mar 13 – Mar 27
TomatoesStart indoors · Feb 6 – Feb 20
TomatoesTransplant · Apr 10 – Apr 24
Peppers, eggplantStart indoors · Jan 23 – Feb 6
Peppers, eggplantTransplant · Apr 17 – May 1
BeansSow outdoors · Apr 10 – Apr 24
Sweet cornSow outdoors · Apr 10 – Apr 24
Cucumbers, squashSow outdoors · Apr 10 – Apr 24
Fall lettuce, spinachSow outdoors · Sep 12 – Sep 26
GarlicPlant cloves · Oct 24 – Nov 28
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 3) and first fall frost (Nov 7) 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 30045 came on Feb 15 — 3 days later than the 1991–2020 average (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 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.

Trees 88

American basswood100 ft · blooms late spring · low shade tolerance · to −46 °FAmerican beech80 ft · blooms mid spring · low shade tolerance · to −44 °FAmerican chestnut115 ft · blooms early summer · high shade tolerance · to −33 °FAmerican elm120 ft · blooms early spring · medium shade tolerance · to −46 °FAmerican sycamore100 ft · blooms spring · medium shade tolerance · to −34 °FAtlantic white cedar50 ft · blooms spring · medium shade tolerance · to −36 °F

Shrubs 138

Allegheny serviceberry35 ft · blooms early spring · low shade tolerance · to −38 °Faloe yucca15 ft · blooms early summer · medium shade tolerance · to −1 °Falternateleaf dogwood25 ft · blooms mid spring · low shade tolerance · to −47 °FAmerican beautyberry6 ft · blooms early summer · medium shade tolerance · to −8 °FAmerican hazelnut10 ft · blooms spring · medium shade tolerance · to −33 °FAmerican holly40 ft · blooms mid spring · low shade tolerance · to −20 °F

Wildflowers & perennials 169

American bur-reed3 ft · blooms indeterminate · medium shade tolerance · to −33 °FAmerican eelgrass1 ft · blooms mid summer · high shade tolerance · to −33 °FAmerican lotus3 ft · blooms mid summer · high shade tolerance · to −36 °FAmerican pokeweed7 ft · blooms mid summer · low shade tolerance · to −33 °FAmerican spongeplant0.5 ft · blooms mid spring · high shade tolerance · to −24 °FAmerican water horehound1.8 ft · blooms early summer · low shade tolerance · to −38 °F

Grasses 152

American cupscale3 ft · blooms early summer · high shade tolerance · to −18 °Fautumn bluegrass1.5 ft · blooms late spring · medium shade tolerance · to −8 °Fawlfruit sedge4 ft · blooms mid spring · low shade tolerance · to −38 °Fbeaked spikerush3 ft · blooms late spring · high shade tolerance · to −28 °Fbig bluestem6 ft · blooms summer · high shade tolerance · to −46 °Fbig cordgrass8 ft · blooms spring · high shade tolerance · to −3 °F

Vines 13

American bittersweet15 ft · blooms spring · low shade tolerance · to −38 °FAmerican wisteria50 ft · blooms spring · low shade tolerance · to −3 °Fcatbird grape30 ft · blooms late spring · medium shade tolerance · to −13 °Fcupseed30 ft · blooms late spring · low shade tolerance · to −3 °Fdevil's darning needles15 ft · blooms mid summer · medium shade tolerance · to −38 °Ffrost grape83 ft · blooms late spring · medium shade tolerance · to −23 °F

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 Lawrenceville, GA.

Soil in Lawrenceville, GA

The soil mapped at the center of ZIP 30045 is Madison — gravelly sandy loam, well drained.

TextureGravelly sandy loamdrains and warms fast; dries out and needs more feeding
pH5.5moderately acidic; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter1.25%low — add compost
Hydrologic groupBwater soaks in moderately
Farmland classFarmland of statewide importanceUSDA classification

Map unit: Madison gravelly sandy loam, 6 to 10 percent slopes, 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 30045; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Lawrenceville, GA

Summer high89 °Faverage high, July
Winter low32 °Faverage low, January
Hot days38days a year at 90 °F or more
Freezing nights59nights a year at 32 °F or less
Growing degree days4,868base 50 °F — the season’s usable heat
Longest day14 h 25 mindaylight on June 21
Shortest day9 h 53 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation53.7 inper year, rain and melted snow

Average high and low, by month

20°30°40°50°60°70°80°90°100°32 °FJanuary: average high 54 °F, low 32 °F 54°32° JanFebruary: average high 58 °F, low 35 °F 58°35° FebMarch: average high 66 °F, low 40 °F 66°40° MarApril: average high 74 °F, low 47 °F 74°47° AprMay: average high 81 °F, low 56 °F 81°56° MayJune: average high 87 °F, low 64 °F 87°64° JunJuly: average high 89 °F, low 68 °F 89°68° JulAugust: average high 89 °F, low 67 °F 89°67° AugSeptember: average high 83 °F, low 62 °F 83°62° SepOctober: average high 74 °F, low 51 °F 74°51° OctNovember: average high 64 °F, low 41 °F 64°41° NovDecember: average high 55 °F, low 35 °F 55°35° Dec

Precipitation by month inches

0″1″2″3″4″5″6″January: 5.07 in precipitation 5.1 JanFebruary: 5.09 in precipitation 5.1 FebMarch: 4.85 in precipitation 4.8 MarApril: 3.76 in precipitation 3.8 AprMay: 3.87 in precipitation 3.9 MayJune: 4.81 in precipitation 4.8 JunJuly: 4.49 in precipitation 4.5 JulAugust: 5.05 in precipitation 5.0 AugSeptember: 4.45 in precipitation 4.5 SepOctober: 3.69 in precipitation 3.7 OctNovember: 3.90 in precipitation 3.9 NovDecember: 4.67 in precipitation 4.7 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Winder 4s, GA (12 mi away); precipitation: Bethlehem 7.0 W, GA (6 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 8a.

300198a
Dacula, GA · 4 mi
300498a
Lawrenceville, GA · 4 mi
300468a
Lawrenceville, GA · 4 mi
300178a
Grayson, GA · 4 mi
300038a
Norcross, GA · 7 mi
300108a
Norcross, GA · 7 mi
300488a
Lilburn, GA · 7 mi
300918a
Norcross, GA · 7 mi

All 6 ZIP codes in Lawrenceville → · Georgia planting zones →

Questions about 30045

What planting zone is ZIP code 30045?

ZIP code 30045 (Lawrenceville, GA) is in USDA hardiness zone 8a on the 2023 map: the coldest night of an average winter reaches 10 to 15 °F (−12.2 to −9.4 °C).

When is the last frost in Lawrenceville, GA?

The median last spring frost (32 °F) near 30045 is April 3; after April 17 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Winder 4s station.

When is the first frost in Lawrenceville, GA?

The median first fall frost near 30045 is November 7, giving a median frost-free growing season of 219 days.

When should I plant tomatoes in 30045?

Start tomato seeds indoors around Feb 6 – Feb 20 and set transplants outside around Apr 10 – Apr 24, one to three weeks after the median last frost.

How much rain and snow does 30045 get?

About 53.7 inches of precipitation a year (NOAA 1991–2020 normals, Bethlehem 7.0 W station).

How hot do summers get in Lawrenceville, GA?

The average high peaks at 89 °F in July, with about 38 days a year at 90 °F or more.

What kind of soil does 30045 have?

The USDA soil survey maps Madison at the center of ZIP 30045: gravelly sandy loam, well drained, pH about 5.5 (moderately acidic).

Did spring come early in Lawrenceville, GA in 2026?

Spring leaf-out near 30045 came on Feb 15 in 2026, 3 days later than the 1991–2020 average (Feb 12), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Lawrenceville, GA?

Intermediate onions: the longest day near 30045 is 14 h 25 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

Did the zone for 30045 change?

Yes. The 2012 USDA map put 30045 in zone 7b; the 2023 map puts it in zone 8a. The newer map uses 1991–2020 data and more weather stations.