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

Planting zone for 02345 — Manomet, MA

ZIP code 02345 (Manomet, Plymouth County) is in USDA zone 7a: the coldest winter night averages 0 to 5 °F. The median last spring frost is April 30 and the first fall frost October 16.

Where ZIP 02345 is

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 30
First frostOct 16
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 Manomet, 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 Manomet, 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 — 8 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 02345

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 02345 came on Apr 10 — 5 days later than the 1991–2020 average (Apr 5).

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 Manomet, MA

The soil mapped at the center of ZIP 02345 is Plymouth — slightly decomposed plant material, excessively drained.

TextureSlightly decomposed plant materialtop layer
DrainageExcessively drainednatural drainage class
Organic matter75%high
Hydrologic groupAwater soaks in fast
Farmland classNot prime farmlandUSDA classification

Map unit: Plymouth loamy coarse sand, 15 to 35 percent slopes, bouldery.

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 02345; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Manomet, 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 14 mindaylight on June 21
Shortest day9 h 07 mindaylight on December 21
Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)
Precipitation49.8 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″6″January: 4.18 in precipitation 4.2 JanFebruary: 3.50 in precipitation 3.5 FebMarch: 5.03 in precipitation 5.0 MarApril: 4.36 in precipitation 4.4 AprMay: 3.60 in precipitation 3.6 MayJune: 3.58 in precipitation 3.6 JunJuly: 3.29 in precipitation 3.3 JulAugust: 3.53 in precipitation 3.5 AugSeptember: 4.54 in precipitation 4.5 SepOctober: 4.90 in precipitation 4.9 OctNovember: 4.44 in precipitation 4.4 NovDecember: 4.81 in precipitation 4.8 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Plymouth Municipal Airport, MA (8 mi away); precipitation: Sagamore Beach 1.0 Nw, MA (6 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.

023607a
Plymouth, MA · 3 mi
023817a
White Horse Beach, MA · 3 mi
023666b
South Carver, MA · 5 mi
023627a
Plymouth, MA · 7 mi
025627a
Sagamore Beach, MA · 7 mi
025387a
East Wareham, MA · 8 mi
023317a
Duxbury, MA · 8 mi
023617a
Plymouth, MA · 8 mi

Massachusetts planting zones →

Questions about 02345

What planting zone is ZIP code 02345?

ZIP code 02345 (Manomet, MA) 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 Manomet, MA?

The median last spring frost (32 °F) near 02345 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 Manomet, MA?

The median first fall frost near 02345 is October 16, giving a median frost-free growing season of 170 days.

When should I plant tomatoes in 02345?

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 02345 get?

About 49.8 inches of precipitation a year (NOAA 1991–2020 normals, Sagamore Beach 1.0 Nw station).

How hot do summers get in Manomet, 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 02345 have?

The USDA soil survey maps Plymouth at the center of ZIP 02345: slightly decomposed plant material, excessively drained.

Did spring come early in Manomet, MA in 2026?

Spring leaf-out near 02345 came on Apr 10 in 2026, 5 days later than the 1991–2020 average (Apr 5), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Manomet, MA?

Long-day onions: the longest day near 02345 is 15 h 14 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).

Did the zone for 02345 change?

Yes. The 2012 USDA map put 02345 in zone 6b; the 2023 map puts it in zone 7a. The newer map uses 1991–2020 data and more weather stations.