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

Planting zone for 38587 — Walling, TN

ZIP code 38587 (Walling, White County) is in USDA zone 7b: the coldest winter night averages 5 to 10 °F. The median last spring frost is April 6 and the first fall frost October 30.

Where ZIP 38587 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 6
First frostOct 30
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 Walling, 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 Walling, TN

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 6median — 50% chance of a later frost
Safe for tender plantsApril 22only 10% chance of frost after
First fall frostOctober 30median — 10% chance by Oct 17
Growing season207 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 26 and returns around November 9.

From the NOAA station Rock Island Sp, TN — 4 miles away, elevation 879 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 38587

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Feb 23 – Mar 9
SpinachSow outdoors · Feb 23 – Mar 16
Broccoli, cabbageStart indoors · Jan 26 – Feb 9
Broccoli, cabbageTransplant · Mar 16 – Mar 30
Onion setsPlant outdoors · Mar 9 – Mar 23
PotatoesPlant outdoors · Mar 16 – Mar 30
LettuceSow outdoors · Mar 9 – Mar 23
Carrots, beetsSow outdoors · Mar 16 – Mar 30
TomatoesStart indoors · Feb 9 – Feb 23
TomatoesTransplant · Apr 13 – Apr 27
Peppers, eggplantStart indoors · Jan 26 – Feb 9
Peppers, eggplantTransplant · Apr 20 – May 4
BeansSow outdoors · Apr 13 – Apr 27
Sweet cornSow outdoors · Apr 13 – Apr 27
Cucumbers, squashSow outdoors · Apr 13 – Apr 27
Fall lettuce, spinachSow outdoors · Sep 4 – Sep 18
GarlicPlant cloves · Oct 16 – Nov 20
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 6) and first fall frost (Oct 30) 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 38587 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 Walling, TN

The soil mapped at the center of ZIP 38587 is Bewleyville — silt loam, well drained.

TextureSilt loama good balance for most vegetables
pH5.5moderately acidic; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter2%moderate
Hydrologic groupBwater soaks in moderately
Farmland classprime farmlandUSDA classification

Map unit: Bewleyville 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 38587; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Walling, TN

Summer high87 °Faverage high, July
Winter low29 °Faverage low, January
Hot days27days a year at 90 °F or more
Freezing nights74nights a year at 32 °F or less
Growing degree days4,459base 50 °F — the season’s usable heat
Longest day14 h 36 mindaylight on June 21
Shortest day9 h 43 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation59.4 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 48 °F, low 29 °F 48°29° JanFebruary: average high 53 °F, low 32 °F 53°32° FebMarch: average high 62 °F, low 39 °F 62°39° MarApril: average high 70 °F, low 47 °F 70°47° AprMay: average high 78 °F, low 56 °F 78°56° MayJune: average high 84 °F, low 64 °F 84°64° JunJuly: average high 87 °F, low 68 °F 87°68° JulAugust: average high 86 °F, low 67 °F 86°67° AugSeptember: average high 80 °F, low 61 °F 80°61° SepOctober: average high 71 °F, low 48 °F 71°48° OctNovember: average high 61 °F, low 38 °F 61°38° NovDecember: average high 52 °F, low 32 °F 52°32° Dec

Precipitation by month inches

0″2″4″6″January: 5.09 in precipitation 5.1 JanFebruary: 5.11 in precipitation 5.1 FebMarch: 6.02 in precipitation 6.0 MarApril: 5.16 in precipitation 5.2 AprMay: 4.78 in precipitation 4.8 MayJune: 5.37 in precipitation 5.4 JunJuly: 5.29 in precipitation 5.3 JulAugust: 4.29 in precipitation 4.3 AugSeptember: 4.04 in precipitation 4.0 SepOctober: 3.46 in precipitation 3.5 OctNovember: 4.56 in precipitation 4.6 NovDecember: 6.24 in precipitation 6.2 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Rock Island Sp, TN (4 mi away); precipitation: Rock Island Sp, TN (4 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.

385797b
Quebeck, TN · 4 mi
385507b
Campaign, TN · 7 mi
385597b
Doyle, TN · 7 mi
385817b
Rock Island, TN · 9 mi
371667b
Smithville, TN · 10 mi
385837b
Sparta, TN · 12 mi
371117b
Mcminnville, TN · 15 mi
385857a
Spencer, TN · 17 mi

Tennessee planting zones →

Questions about 38587

What planting zone is ZIP code 38587?

ZIP code 38587 (Walling, 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 Walling, TN?

The median last spring frost (32 °F) near 38587 is April 6; after April 22 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Rock Island Sp station.

When is the first frost in Walling, TN?

The median first fall frost near 38587 is October 30, giving a median frost-free growing season of 207 days.

When should I plant tomatoes in 38587?

Start tomato seeds indoors around Feb 9 – Feb 23 and set transplants outside around Apr 13 – Apr 27, one to three weeks after the median last frost.

How much rain and snow does 38587 get?

About 59.4 inches of precipitation a year (NOAA 1991–2020 normals, Rock Island Sp station).

How hot do summers get in Walling, TN?

The average high peaks at 87 °F in July, with about 27 days a year at 90 °F or more.

What kind of soil does 38587 have?

The USDA soil survey maps Bewleyville at the center of ZIP 38587: silt loam, well drained, pH about 5.5 (moderately acidic).

Did spring come early in Walling, TN in 2026?

Spring leaf-out near 38587 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 Walling, TN?

Intermediate onions: the longest day near 38587 is 14 h 36 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

Did the zone for 38587 change?

Yes. The 2012 USDA map put 38587 in zone 7a; the 2023 map puts it in zone 7b. The newer map uses 1991–2020 data and more weather stations.