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

Planting zone for Monroe, GA

Monroe, GA is in USDA zones 8a to 8b across its 2 ZIP codes. The median last spring frost is April 3 and the first fall frost November 7.

Monroe 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.

Zones8a–8b10 to 20 °F

ZIP codes2

Last frostApr 3

First frostNov 7

Growing season219 days

8a 1 ZIP 8b 1 ZIP

Frost forecast — next 7 nights

live from the National Weather Service

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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 Monroe, 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, 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 Monroe

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 30656 came on Feb 15 — 4 days later than the 1991–2020 average (Feb 11).

average
Feb 112026
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 Monroe, GA.

Soil in Monroe, GA

The soil mapped at the center of ZIP 30656 is Gwinnett — clay loam, well drained.

TextureClay loamholds water and nutrients; slow to drain and warm up

pH5.8moderately acidic; most vegetables like 6.0–7.0

DrainageWell drainednatural drainage class

Organic matter2%moderate

Hydrologic groupBwater soaks in moderately

Farmland classNot prime farmlandUSDA classification

Map unit: Lloyd (Gwinnett) clay loam, 2 to 6 percent slopes, severely 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 30656; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Monroe, 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 24 mindaylight on June 21

Shortest day9 h 54 mindaylight on December 21

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

Precipitation50.9 inper year, rain and melted snow

Snowfall1 inper year

Average high and low, by month

Precipitation by month inches · ❄ = snowfall

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

ZIP codes in Monroe

Georgia planting zones →

Questions about Monroe

What planting zone is Monroe, GA?

Monroe, GA is in USDA hardiness zones 8a to 8b on the 2023 map (8a: 10 to 15 °F; 8b: 15 to 20 °F).

When is the last frost in Monroe, GA?

The median last spring frost is April 3 and the median first fall frost is November 7 (NOAA 1991–2020 normals, Winder 4s station).

When can I plant a garden in Monroe, GA?

Cool-season crops like peas and spinach go in around Feb 20 – Mar 13; tomatoes, peppers, beans and squash after about Apr 10, once frost risk has passed.

What kind of onions grow in Monroe, 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 Monroe, GA get?

About 50.9 inches of precipitation a year and 1 inches of snowfall (NOAA 1991–2020 normals).