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

Planting zone for 02366 — South Carver, MA

ZIP code 02366 (South Carver, Plymouth County) is in USDA zone 6b: the coldest winter night averages −5 to 0 °F. The median last spring frost is April 30 and the first fall frost October 16.

Where ZIP 02366 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.

Zone6b−5 to 0 °F
Coldest night−20.6 to −17.8 °C
Last frostApr 30
First frostOct 16
2012 zone6b

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 6b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for South Carver, MA…

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 South Carver, MA

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 30median — 50% chance of a later frost
Safe for tender plantsMay 12only 10% chance of frost after
First fall frostOctober 16median — 10% chance by Oct 3
Growing season170 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 18 and returns around October 27.

From the NOAA station Plymouth Municipal Airport, MA — 6 miles away, elevation 148 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 02366

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Mar 19 – Apr 2
SpinachSow outdoors · Mar 19 – Apr 9
Broccoli, cabbageStart indoors · Feb 19 – Mar 5
Broccoli, cabbageTransplant · Apr 9 – Apr 23
Onion setsPlant outdoors · Apr 2 – Apr 16
PotatoesPlant outdoors · Apr 9 – Apr 23
LettuceSow outdoors · Apr 2 – Apr 16
Carrots, beetsSow outdoors · Apr 9 – Apr 23
TomatoesStart indoors · Mar 5 – Mar 19
TomatoesTransplant · May 7 – May 21
Peppers, eggplantStart indoors · Feb 19 – Mar 5
Peppers, eggplantTransplant · May 14 – May 28
BeansSow outdoors · May 7 – May 21
Sweet cornSow outdoors · May 7 – May 21
Cucumbers, squashSow outdoors · May 7 – May 21
Fall lettuce, spinachSow outdoors · Aug 21 – Sep 4
GarlicPlant cloves · Oct 2 – Nov 6
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 30) and first fall frost (Oct 16) 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 02366 came on Apr 6 — about the same time as the 1991–2020 average (Apr 7).

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 South Carver, MA

The soil mapped at the center of ZIP 02366 is Carver — slightly decomposed plant material, excessively drained.

TextureSlightly decomposed plant materialtop layer
DrainageExcessively drainednatural drainage class
Organic matter80%high
Hydrologic groupAwater soaks in fast
Farmland classNot prime farmlandUSDA classification

Map unit: Carver - Urban land complex, 0 to 8 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 02366; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in South Carver, MA

Summer high82 °Faverage high, July
Winter low20 °Faverage low, January
Hot days9days a year at 90 °F or more
Freezing nights127nights a year at 32 °F or less
Growing degree days2,641base 50 °F — the season’s usable heat
Longest day15 h 13 mindaylight on June 21
Shortest day9 h 08 mindaylight on December 21
Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)
Precipitation48 inper year, rain and melted snow

Average high and low, by month

10°20°30°40°50°60°70°80°90°32 °FJanuary: average high 38 °F, low 20 °F 38°20° JanFebruary: average high 40 °F, low 21 °F 40°21° FebMarch: average high 46 °F, low 27 °F 46°27° MarApril: average high 57 °F, low 36 °F 57°36° AprMay: average high 67 °F, low 46 °F 67°46° MayJune: average high 76 °F, low 55 °F 76°55° JunJuly: average high 82 °F, low 62 °F 82°62° JulAugust: average high 80 °F, low 61 °F 80°61° AugSeptember: average high 73 °F, low 53 °F 73°53° SepOctober: average high 63 °F, low 42 °F 63°42° OctNovember: average high 53 °F, low 33 °F 53°33° NovDecember: average high 43 °F, low 26 °F 43°26° Dec

Precipitation by month inches

0″1″2″3″4″5″January: 3.83 in precipitation 3.8 JanFebruary: 2.96 in precipitation 3.0 FebMarch: 4.95 in precipitation 5.0 MarApril: 4.40 in precipitation 4.4 AprMay: 3.54 in precipitation 3.5 MayJune: 3.80 in precipitation 3.8 JunJuly: 3.35 in precipitation 3.4 JulAugust: 3.46 in precipitation 3.5 AugSeptember: 3.82 in precipitation 3.8 SepOctober: 4.81 in precipitation 4.8 OctNovember: 4.48 in precipitation 4.5 NovDecember: 4.59 in precipitation 4.6 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Plymouth Municipal Airport, MA (6 mi away); precipitation: Plymouth Municipal Airport, MA (6 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

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

023607a
Plymouth, MA · 3 mi
023306b
Carver, MA · 5 mi
023457a
Manomet, MA · 5 mi
025387a
East Wareham, MA · 5 mi
025717a
Wareham, MA · 7 mi
025587a
Onset, MA · 7 mi
025767a
West Wareham, MA · 7 mi
023627a
Plymouth, MA · 8 mi

Massachusetts planting zones →

Questions about 02366

What planting zone is ZIP code 02366?

ZIP code 02366 (South Carver, MA) is in USDA hardiness zone 6b on the 2023 map: the coldest night of an average winter reaches −5 to 0 °F (−20.6 to −17.8 °C).

When is the last frost in South Carver, MA?

The median last spring frost (32 °F) near 02366 is April 30; after May 12 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Plymouth Municipal Airport station.

When is the first frost in South Carver, MA?

The median first fall frost near 02366 is October 16, giving a median frost-free growing season of 170 days.

When should I plant tomatoes in 02366?

Start tomato seeds indoors around Mar 5 – Mar 19 and set transplants outside around May 7 – May 21, one to three weeks after the median last frost.

How much rain and snow does 02366 get?

About 48 inches of precipitation a year (NOAA 1991–2020 normals, Plymouth Municipal Airport station).

How hot do summers get in South Carver, MA?

The average high peaks at 82 °F in July, with about 9 days a year at 90 °F or more.

What kind of soil does 02366 have?

The USDA soil survey maps Carver at the center of ZIP 02366: slightly decomposed plant material, excessively drained.

Did spring come early in South Carver, MA in 2026?

Spring leaf-out near 02366 came on Apr 6 in 2026, about the same as the 1991–2020 average (Apr 7), according to the USA National Phenology Network Spring Index.

What kind of onions grow in South Carver, MA?

Long-day onions: the longest day near 02366 is 15 h 13 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).