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

Planting zone for 03076 — Pelham, NH

ZIP code 03076 (Pelham, Hillsborough) is in USDA zone 6a: the coldest winter night averages −10 to −5 °F. The median last spring frost is May 3 and the first fall frost October 8.

Where ZIP 03076 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.

Zone6a−10 to −5 °F
Coldest night−23.3 to −20.6 °C
Last frostMay 3
First frostOct 8
2012 zone5b

Was 5b 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 6a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Pelham, NH…

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 Pelham, NH

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostMay 3median — 50% chance of a later frost
Safe for tender plantsMay 16only 10% chance of frost after
First fall frostOctober 8median — 10% chance by Sep 27
Growing season156 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 22 and returns around October 18.

From the NOAA station Hudson 1 Sse, NH — 6 miles away, elevation 184 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 03076

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Mar 22 – Apr 5
SpinachSow outdoors · Mar 22 – Apr 12
Broccoli, cabbageStart indoors · Feb 22 – Mar 8
Broccoli, cabbageTransplant · Apr 12 – Apr 26
Onion setsPlant outdoors · Apr 5 – Apr 19
PotatoesPlant outdoors · Apr 12 – Apr 26
LettuceSow outdoors · Apr 5 – Apr 19
Carrots, beetsSow outdoors · Apr 12 – Apr 26
TomatoesStart indoors · Mar 8 – Mar 22
TomatoesTransplant · May 10 – May 24
Peppers, eggplantStart indoors · Feb 22 – Mar 8
Peppers, eggplantTransplant · May 17 – May 31
BeansSow outdoors · May 10 – May 24
Sweet cornSow outdoors · May 10 – May 24
Cucumbers, squashSow outdoors · May 10 – May 24
Fall lettuce, spinachSow outdoors · Aug 13 – Aug 27
GarlicPlant cloves · Sep 24 – Oct 29
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (May 3) and first fall frost (Oct 8) 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 03076 came on Apr 9 — about the same time as the 1991–2020 average (Apr 11).

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).

Native plants for zone 6a in New Hampshire

486 plants native to the lower 48 states, recorded in New Hampshire, and rated by the USDA to survive −10 °F or colder — the bottom of zone 6a. Each links to its USDA PLANTS profile.

Trees 53

American basswood100 ft · blooms late spring · low shade tolerance · to −46 °FAmerican beech80 ft · blooms mid spring · low shade tolerance · to −44 °FAmerican chestnut115 ft · blooms early summer · high shade tolerance · to −33 °FAmerican elm120 ft · blooms early spring · medium shade tolerance · to −46 °FAmerican sycamore100 ft · blooms spring · medium shade tolerance · to −34 °Farborvitae50 ft · blooms mid spring · medium shade tolerance · to −33 °F

Shrubs 99

alderleaf buckthorn3 ft · blooms late spring · low shade tolerance · to −33 °FAllegheny serviceberry35 ft · blooms early spring · low shade tolerance · to −38 °Falpine bearberry0.5 ft · blooms early spring · medium shade tolerance · to −62 °Falternateleaf dogwood25 ft · blooms mid spring · low shade tolerance · to −47 °FAmerican black currant3 ft · blooms early spring · to −46 °FAmerican hazelnut10 ft · blooms spring · medium shade tolerance · to −33 °F

Wildflowers & perennials 171

alkali buttercup1 ft · blooms late spring · low shade tolerance · to −38 °Falpine bistort1 ft · blooms mid spring · high shade tolerance · to −38 °Falpine mountainsorrel1 ft · blooms mid summer · medium shade tolerance · to −43 °Falpine sweetvetch2 ft · blooms early summer · high shade tolerance · to −62 °FAmerican alpine speedwell1 ft · blooms summer · medium shade tolerance · to −28 °FAmerican bur-reed3 ft · blooms indeterminate · medium shade tolerance · to −33 °F

Grasses 142

alpine timothy1.4 ft · blooms late spring · medium shade tolerance · to −43 °FAmerican beachgrass2.5 ft · blooms spring · high shade tolerance · to −28 °Farctic brome3 ft · blooms early summer · low shade tolerance · to −33 °Fawlfruit sedge4 ft · blooms mid spring · low shade tolerance · to −38 °FBailey's sedge2.1 ft · blooms late spring · low shade tolerance · to −33 °FBebb's sedge3 ft · blooms late spring · low shade tolerance · to −38 °F

Vines 7

American bittersweet15 ft · blooms spring · low shade tolerance · to −38 °Fdevil's darning needles15 ft · blooms mid summer · medium shade tolerance · to −38 °Friverbank grape45 ft · blooms late spring · medium shade tolerance · to −33 °Fsummer grape30 ft · blooms late spring · low shade tolerance · to −23 °Ftrumpet creeper2 ft · blooms summer · high shade tolerance · to −13 °Ftrumpet honeysuckle16 ft · blooms late summer · low shade tolerance · to −33 °F

Source: USDA, NRCS. 2026. The PLANTS Database (plants.usda.gov), National Plant Data Team — state distribution, native status and the “Temperature, Minimum” characteristic. Check light, moisture and soil needs before buying; local nurseries and your state native plant society can confirm what thrives in Pelham, NH.

Soil in Pelham, NH

The soil mapped at the center of ZIP 03076 is Canton — slightly decomposed plant material, well drained.

TextureSlightly decomposed plant materialtop layer
DrainageWell drainednatural drainage class
Organic matter95%high
Hydrologic groupBwater soaks in moderately
Farmland classFarmland of local importanceUSDA classification

Map unit: Canton fine sandy loam, 8 to 15 percent slopes, very stony.

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 03076; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Pelham, NH

Summer high83 °Faverage high, July
Winter low13 °Faverage low, January
Hot days14days a year at 90 °F or more
Freezing nights162nights a year at 32 °F or less
Growing degree days2,631base 50 °F — the season’s usable heat
Longest day15 h 20 mindaylight on June 21
Shortest day9 h 02 mindaylight on December 21
Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)
Precipitation46.1 inper year, rain and melted snow
Snowfall67 inper year; 81 days with snow on the ground

Average high and low, by month

0°10°20°30°40°50°60°70°80°90°32 °FJanuary: average high 34 °F, low 13 °F 34°13° JanFebruary: average high 37 °F, low 14 °F 37°14° FebMarch: average high 45 °F, low 23 °F 45°23° MarApril: average high 58 °F, low 34 °F 58°34° AprMay: average high 69 °F, low 46 °F 69°46° MayJune: average high 78 °F, low 56 °F 78°56° JunJuly: average high 83 °F, low 61 °F 83°61° JulAugust: average high 82 °F, low 59 °F 82°59° AugSeptember: average high 74 °F, low 51 °F 74°51° SepOctober: average high 61 °F, low 38 °F 61°38° OctNovember: average high 49 °F, low 28 °F 49°28° NovDecember: average high 39 °F, low 20 °F 39°20° Dec

Precipitation by month inches · ❄ = snowfall

0″1″2″3″4″5″January: 3.31 in precipitation, 17.1 in snowfall 3.3❄17 JanFebruary: 3.21 in precipitation, 16.3 in snowfall 3.2❄16 FebMarch: 4.22 in precipitation, 14.6 in snowfall 4.2❄15 MarApril: 4.06 in precipitation, 2.8 in snowfall 4.1❄3 AprMay: 3.64 in precipitation 3.6 MayJune: 4.16 in precipitation 4.2 JunJuly: 3.32 in precipitation 3.3 JulAugust: 3.75 in precipitation 3.8 AugSeptember: 3.68 in precipitation 3.7 SepOctober: 4.66 in precipitation, 0.6 in snowfall 4.7❄1 OctNovember: 3.70 in precipitation, 2 in snowfall 3.7❄2 NovDecember: 4.35 in precipitation, 13.4 in snowfall 4.3❄13 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Hudson 1 Sse, NH (6 mi away); precipitation: Hudson 1 Sse, NH (6 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

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

018266a
Dracut, MA · 4 mi
030516a
Hudson, NH · 4 mi
018506b
Lowell, MA · 5 mi
018546b
Lowell, MA · 6 mi
030876a
Windham, NH · 6 mi
030606a
Nashua, NH · 6 mi
018796a
Tyngsboro, MA · 6 mi
018536b
Lowell, MA · 7 mi

New Hampshire planting zones →

Questions about 03076

What planting zone is ZIP code 03076?

ZIP code 03076 (Pelham, NH) is in USDA hardiness zone 6a on the 2023 map: the coldest night of an average winter reaches −10 to −5 °F (−23.3 to −20.6 °C).

When is the last frost in Pelham, NH?

The median last spring frost (32 °F) near 03076 is May 3; after May 16 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Hudson 1 Sse station.

When is the first frost in Pelham, NH?

The median first fall frost near 03076 is October 8, giving a median frost-free growing season of 156 days.

When should I plant tomatoes in 03076?

Start tomato seeds indoors around Mar 8 – Mar 22 and set transplants outside around May 10 – May 24, one to three weeks after the median last frost.

How much rain and snow does 03076 get?

About 46.1 inches of precipitation a year and 67 inches of snowfall (NOAA 1991–2020 normals, Hudson 1 Sse station).

How hot do summers get in Pelham, NH?

The average high peaks at 83 °F in July, with about 14 days a year at 90 °F or more.

What kind of soil does 03076 have?

The USDA soil survey maps Canton at the center of ZIP 03076: slightly decomposed plant material, well drained.

Did spring come early in Pelham, NH in 2026?

Spring leaf-out near 03076 came on Apr 9 in 2026, about the same as the 1991–2020 average (Apr 11), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Pelham, NH?

Long-day onions: the longest day near 03076 is 15 h 20 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).

Did the zone for 03076 change?

Yes. The 2012 USDA map put 03076 in zone 5b; the 2023 map puts it in zone 6a. The newer map uses 1991–2020 data and more weather stations.