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

Planting zone for 42202 — Adairville, KY

ZIP code 42202 (Adairville, Logan County) is in USDA zone 7a: the coldest winter night averages 0 to 5 °F. The median last spring frost is April 9 and the first fall frost October 28.

Where ZIP 42202 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.

Zone7a0 to 5 °F

Coldest night−17.8 to −15 °C

Last frostApr 9

First frostOct 28

2012 zone7a

Same zone as on the 2012 map. The zone is the one at the center of the ZIP code; hilly ZIPs can span two zones. What zone 7a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Adairville, KY…

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 Adairville, KY

JanFebMarAprMayJunJulAugSepOctNovDec

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

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

Safe for tender plantsApril 30only 10% chance of frost after

First fall frostOctober 28median — 10% chance by Oct 14

Growing season200 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 29 and returns around November 7.

From the NOAA station Russellville, KY — 12 miles away, elevation 571 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 42202

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Feb 26 – Mar 12

SpinachSow outdoors · Feb 26 – Mar 19

Broccoli, cabbageStart indoors · Jan 29 – Feb 12

Broccoli, cabbageTransplant · Mar 19 – Apr 2

Onion setsPlant outdoors · Mar 12 – Mar 26

PotatoesPlant outdoors · Mar 19 – Apr 2

LettuceSow outdoors · Mar 12 – Mar 26

Carrots, beetsSow outdoors · Mar 19 – Apr 2

TomatoesStart indoors · Feb 12 – Feb 26

TomatoesTransplant · Apr 16 – Apr 30

Peppers, eggplantStart indoors · Jan 29 – Feb 12

Peppers, eggplantTransplant · Apr 23 – May 7

BeansSow outdoors · Apr 16 – Apr 30

Sweet cornSow outdoors · Apr 16 – Apr 30

Cucumbers, squashSow outdoors · Apr 16 – Apr 30

Fall lettuce, spinachSow outdoors · Sep 2 – Sep 16

GarlicPlant cloves · Oct 14 – Nov 18

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 9) and first fall frost (Oct 28) 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 42202 came on Feb 26 — 4 days earlier than the 1991–2020 average (Mar 2).

average
Mar 22026
Feb 26

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 7a in Kentucky

547 plants native to the lower 48 states, recorded in Kentucky, and rated by the USDA to survive 0 °F or colder — the bottom of zone 7a. 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 Adairville, KY.

Soil in Adairville, KY

The soil mapped at the center of ZIP 42202 is Pembroke — silt loam, well drained.

TextureSilt loama good balance for most vegetables

pH5.9moderately acidic; most vegetables like 6.0–7.0

DrainageWell drainednatural drainage class

Organic matter3%moderate

Hydrologic groupBwater soaks in moderately

Farmland classprime farmlandUSDA classification

Map unit: Pembroke silt loam, 2 to 6 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 42202; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Adairville, KY

Summer high88 °Faverage high, July

Winter low26 °Faverage low, January

Hot days44days a year at 90 °F or more

Freezing nights91nights a year at 32 °F or less

Growing degree days4,214base 50 °F — the season’s usable heat

Longest day14 h 40 mindaylight on June 21

Shortest day9 h 39 mindaylight on December 21

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

Precipitation51.9 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: Russellville, KY (12 mi away); precipitation: Cedar Hill 2.6 N, TN (11 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

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

371727a

Springfield, TN · 9 mi

Cross Plains, TN · 12 mi

422767a

Russellville, KY · 12 mi

422047a

Allensville, KY · 14 mi

370327a

Cedar Hill, TN · 14 mi

421357a

Franklin, KY · 15 mi

Kentucky planting zones →

Questions about 42202

What planting zone is ZIP code 42202?

ZIP code 42202 (Adairville, KY) is in USDA hardiness zone 7a on the 2023 map: the coldest night of an average winter reaches 0 to 5 °F (−17.8 to −15 °C).

When is the last frost in Adairville, KY?

The median last spring frost (32 °F) near 42202 is April 9; after April 30 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Russellville station.

When is the first frost in Adairville, KY?

The median first fall frost near 42202 is October 28, giving a median frost-free growing season of 200 days.

When should I plant tomatoes in 42202?

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

How much rain and snow does 42202 get?

About 51.9 inches of precipitation a year (NOAA 1991–2020 normals, Cedar Hill 2.6 N station).

How hot do summers get in Adairville, KY?

The average high peaks at 88 °F in July, with about 44 days a year at 90 °F or more.

What kind of soil does 42202 have?

The USDA soil survey maps Pembroke at the center of ZIP 42202: silt loam, well drained, pH about 5.9 (moderately acidic).

Did spring come early in Adairville, KY in 2026?

Spring leaf-out near 42202 came on Feb 26 in 2026, 4 days earlier than the 1991–2020 average (Mar 2), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Adairville, KY?

Intermediate onions: the longest day near 42202 is 14 h 40 min, so day-neutral types bulb best; long-day varieties may not bulb fully.