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

Planting zone for 38201 — Mc Kenzie, TN

ZIP code 38201 (Mc Kenzie, Carroll County) is in USDA zone 7b: the coldest winter night averages 5 to 10 °F. The median last spring frost is April 2 and the first fall frost October 31.

Where ZIP 38201 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.

Zone7b5 to 10 °F
Coldest night−15 to −12.2 °C
Last frostApr 2
First frostOct 31
2012 zone7a

Was 7a 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 7b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Mc Kenzie, TN…

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 Mc Kenzie, TN

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 2median — 50% chance of a later frost
Safe for tender plantsApril 18only 10% chance of frost after
First fall frostOctober 31median — 10% chance by Oct 19
Growing season211 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 21 and returns around November 9.

From the NOAA station Huntingdon Wtp, TN — 10 miles away, elevation 440 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 38201

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Feb 19 – Mar 5
SpinachSow outdoors · Feb 19 – Mar 12
Broccoli, cabbageStart indoors · Jan 22 – Feb 5
Broccoli, cabbageTransplant · Mar 12 – Mar 26
Onion setsPlant outdoors · Mar 5 – Mar 19
PotatoesPlant outdoors · Mar 12 – Mar 26
LettuceSow outdoors · Mar 5 – Mar 19
Carrots, beetsSow outdoors · Mar 12 – Mar 26
TomatoesStart indoors · Feb 5 – Feb 19
TomatoesTransplant · Apr 9 – Apr 23
Peppers, eggplantStart indoors · Jan 22 – Feb 5
Peppers, eggplantTransplant · Apr 16 – Apr 30
BeansSow outdoors · Apr 9 – Apr 23
Sweet cornSow outdoors · Apr 9 – Apr 23
Cucumbers, squashSow outdoors · Apr 9 – Apr 23
Fall lettuce, spinachSow outdoors · Sep 5 – Sep 19
GarlicPlant cloves · Oct 17 – Nov 21
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 2) and first fall frost (Oct 31) 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 38201 came on Feb 21 — 4 days earlier than the 1991–2020 average (Feb 25).

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).

Soil in Mc Kenzie, TN

The soil mapped at the center of ZIP 38201 is Lexington — silt loam, well drained.

TextureSilt loama good balance for most vegetables
pH6.3slightly acidic; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter1.25%low — add compost
Hydrologic groupBwater soaks in moderately
Farmland classprime farmlandUSDA classification

Map unit: Lexington silt loam, 2 to 5 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 38201; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Mc Kenzie, TN

Summer high89 °Faverage high, July
Winter low28 °Faverage low, January
Hot days47days a year at 90 °F or more
Freezing nights84nights a year at 32 °F or less
Growing degree days4,698base 50 °F — the season’s usable heat
Longest day14 h 37 mindaylight on June 21
Shortest day9 h 42 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation55.9 inper year, rain and melted snow
Snowfall3 inper year; 3 days with snow on the ground

Average high and low, by month

20°30°40°50°60°70°80°90°100°32 °FJanuary: average high 47 °F, low 28 °F 47°28° JanFebruary: average high 52 °F, low 31 °F 52°31° FebMarch: average high 61 °F, low 38 °F 61°38° MarApril: average high 71 °F, low 47 °F 71°47° AprMay: average high 79 °F, low 57 °F 79°57° MayJune: average high 86 °F, low 66 °F 86°66° JunJuly: average high 89 °F, low 69 °F 89°69° JulAugust: average high 89 °F, low 67 °F 89°67° AugSeptember: average high 83 °F, low 59 °F 83°59° SepOctober: average high 72 °F, low 47 °F 72°47° OctNovember: average high 60 °F, low 37 °F 60°37° NovDecember: average high 50 °F, low 31 °F 50°31° Dec

Precipitation by month inches · ❄ = snowfall

0″1″2″3″4″5″6″January: 4.18 in precipitation, 1.6 in snowfall 4.2❄2 JanFebruary: 4.58 in precipitation, 1 in snowfall 4.6❄1 FebMarch: 5.45 in precipitation, 0.2 in snowfall 5.5 MarApril: 5.25 in precipitation 5.3 AprMay: 5.91 in precipitation 5.9 MayJune: 4.66 in precipitation 4.7 JunJuly: 4.74 in precipitation 4.7 JulAugust: 3.60 in precipitation 3.6 AugSeptember: 3.49 in precipitation 3.5 SepOctober: 3.99 in precipitation 4.0 OctNovember: 4.72 in precipitation, 0.1 in snowfall 4.7 NovDecember: 5.35 in precipitation, 0.4 in snowfall 5.3 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Huntingdon Wtp, TN (10 mi away); precipitation: Huntingdon Wtp, TN (10 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 7b.

382297b
Gleason, TN · 8 mi
382317b
Henry, TN · 9 mi
382587b
Trezevant, TN · 9 mi
382357b
Mc Lemoresville, TN · 10 mi
383447b
Huntingdon, TN · 11 mi
382237b
Como, TN · 12 mi
382207b
Atwood, TN · 12 mi
382307b
Greenfield, TN · 14 mi

Tennessee planting zones →

Questions about 38201

What planting zone is ZIP code 38201?

ZIP code 38201 (Mc Kenzie, TN) is in USDA hardiness zone 7b on the 2023 map: the coldest night of an average winter reaches 5 to 10 °F (−15 to −12.2 °C).

When is the last frost in Mc Kenzie, TN?

The median last spring frost (32 °F) near 38201 is April 2; after April 18 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Huntingdon Wtp station.

When is the first frost in Mc Kenzie, TN?

The median first fall frost near 38201 is October 31, giving a median frost-free growing season of 211 days.

When should I plant tomatoes in 38201?

Start tomato seeds indoors around Feb 5 – Feb 19 and set transplants outside around Apr 9 – Apr 23, one to three weeks after the median last frost.

How much rain and snow does 38201 get?

About 55.9 inches of precipitation a year and 3 inches of snowfall (NOAA 1991–2020 normals, Huntingdon Wtp station).

How hot do summers get in Mc Kenzie, TN?

The average high peaks at 89 °F in July, with about 47 days a year at 90 °F or more.

What kind of soil does 38201 have?

The USDA soil survey maps Lexington at the center of ZIP 38201: silt loam, well drained, pH about 6.3 (slightly acidic).

Did spring come early in Mc Kenzie, TN in 2026?

Spring leaf-out near 38201 came on Feb 21 in 2026, 4 days earlier than the 1991–2020 average (Feb 25), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Mc Kenzie, TN?

Intermediate onions: the longest day near 38201 is 14 h 37 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

Did the zone for 38201 change?

Yes. The 2012 USDA map put 38201 in zone 7a; the 2023 map puts it in zone 7b. The newer map uses 1991–2020 data and more weather stations.