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

Planting zone for 37852 — Robbins, TN

ZIP code 37852 (Robbins, Scott County) is in USDA zone 7a: the coldest winter night averages 0 to 5 °F. The median last spring frost is April 23 and the first fall frost October 18.

Where ZIP 37852 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 23
First frostOct 18
2012 zone6b

Was 6b 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 7a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Robbins, 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 Robbins, TN

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 23median — 50% chance of a later frost
Safe for tender plantsMay 12only 10% chance of frost after
First fall frostOctober 18median — 10% chance by Oct 5
Growing season177 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 7 and returns around October 27.

From the NOAA station Oneida, TN — 12 miles away, elevation 1,440 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 37852

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Mar 12 – Mar 26
SpinachSow outdoors · Mar 12 – Apr 2
Broccoli, cabbageStart indoors · Feb 12 – Feb 26
Broccoli, cabbageTransplant · Apr 2 – Apr 16
Onion setsPlant outdoors · Mar 26 – Apr 9
PotatoesPlant outdoors · Apr 2 – Apr 16
LettuceSow outdoors · Mar 26 – Apr 9
Carrots, beetsSow outdoors · Apr 2 – Apr 16
TomatoesStart indoors · Feb 26 – Mar 12
TomatoesTransplant · Apr 30 – May 14
Peppers, eggplantStart indoors · Feb 12 – Feb 26
Peppers, eggplantTransplant · May 7 – May 21
BeansSow outdoors · Apr 30 – May 14
Sweet cornSow outdoors · Apr 30 – May 14
Cucumbers, squashSow outdoors · Apr 30 – May 14
Fall lettuce, spinachSow outdoors · Aug 23 – Sep 6
GarlicPlant cloves · Oct 4 – Nov 8
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 23) and first fall frost (Oct 18) 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 37852 came on Feb 25 — 9 days earlier than the 1991–2020 average (Mar 6).

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 Robbins, TN

The soil mapped at the center of ZIP 37852 is Gilpin — silt loam, well drained.

TextureSilt loama good balance for most vegetables
pH5.3strongly acidic; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter2.25%moderate
Hydrologic groupCwater soaks in slowly
Farmland classNot prime farmlandUSDA classification

Map unit: Gilpin-Petros complex, 35 to 70 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 37852; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Robbins, TN

Summer high85 °Faverage high, July
Winter low25 °Faverage low, January
Hot days15days a year at 90 °F or more
Freezing nights117nights a year at 32 °F or less
Growing degree days3,628base 50 °F — the season’s usable heat
Longest day14 h 38 mindaylight on June 21
Shortest day9 h 41 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation58.1 inper year, rain and melted snow
Snowfall6 inper year; 2 days with snow on the ground

Average high and low, by month

10°20°30°40°50°60°70°80°90°100°32 °FJanuary: average high 45 °F, low 25 °F 45°25° JanFebruary: average high 49 °F, low 27 °F 49°27° FebMarch: average high 58 °F, low 33 °F 58°33° MarApril: average high 68 °F, low 41 °F 68°41° AprMay: average high 76 °F, low 50 °F 76°50° MayJune: average high 82 °F, low 59 °F 82°59° JunJuly: average high 85 °F, low 64 °F 85°64° JulAugust: average high 85 °F, low 62 °F 85°62° AugSeptember: average high 80 °F, low 55 °F 80°55° SepOctober: average high 69 °F, low 42 °F 69°42° OctNovember: average high 58 °F, low 32 °F 58°32° NovDecember: average high 49 °F, low 28 °F 49°28° Dec

Precipitation by month inches · ❄ = snowfall

0″2″4″6″January: 5.15 in precipitation, 2.2 in snowfall 5.2❄2 JanFebruary: 5.06 in precipitation, 1.5 in snowfall 5.1❄2 FebMarch: 5.70 in precipitation, 0.8 in snowfall 5.7❄1 MarApril: 5.25 in precipitation 5.3 AprMay: 4.89 in precipitation 4.9 MayJune: 4.80 in precipitation 4.8 JunJuly: 5.63 in precipitation 5.6 JulAugust: 4.51 in precipitation 4.5 AugSeptember: 3.97 in precipitation 4.0 SepOctober: 3.32 in precipitation 3.3 OctNovember: 3.81 in precipitation 3.8 NovDecember: 6.03 in precipitation, 1 in snowfall 6.0❄1 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Oneida, TN (12 mi away); precipitation: Oneida, TN (12 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 7a.

377327a
Elgin, TN · 3 mi
377337a
Rugby, TN · 7 mi
378727a
Sunbright, TN · 7 mi
377557a
Helenwood, TN · 7 mi
377567a
Huntsville, TN · 10 mi
385047a
Allardt, TN · 10 mi
377707a
Lancing, TN · 12 mi
378417a
Oneida, TN · 13 mi

Tennessee planting zones →

Questions about 37852

What planting zone is ZIP code 37852?

ZIP code 37852 (Robbins, TN) 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 Robbins, TN?

The median last spring frost (32 °F) near 37852 is April 23; after May 12 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Oneida station.

When is the first frost in Robbins, TN?

The median first fall frost near 37852 is October 18, giving a median frost-free growing season of 177 days.

When should I plant tomatoes in 37852?

Start tomato seeds indoors around Feb 26 – Mar 12 and set transplants outside around Apr 30 – May 14, one to three weeks after the median last frost.

How much rain and snow does 37852 get?

About 58.1 inches of precipitation a year and 6 inches of snowfall (NOAA 1991–2020 normals, Oneida station).

How hot do summers get in Robbins, TN?

The average high peaks at 85 °F in July, with about 15 days a year at 90 °F or more.

What kind of soil does 37852 have?

The USDA soil survey maps Gilpin at the center of ZIP 37852: silt loam, well drained, pH about 5.3 (strongly acidic).

Did spring come early in Robbins, TN in 2026?

Spring leaf-out near 37852 came on Feb 25 in 2026, 9 days earlier than the 1991–2020 average (Mar 6), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Robbins, TN?

Intermediate onions: the longest day near 37852 is 14 h 38 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

Did the zone for 37852 change?

Yes. The 2012 USDA map put 37852 in zone 6b; the 2023 map puts it in zone 7a. The newer map uses 1991–2020 data and more weather stations.