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

Planting zone for 04555 — Nobleboro, ME

ZIP code 04555 (Nobleboro, Lincoln County) is in USDA zone 5b: the coldest winter night averages −15 to −10 °F. The median last spring frost is April 27 and the first fall frost October 18.

Where ZIP 04555 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.

Zone5b−15 to −10 °F
Coldest night−26.1 to −23.3 °C
Last frostApr 27
First frostOct 18
2012 zone5b

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 5b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Nobleboro, ME…

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 Nobleboro, ME

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostApril 27median — 50% chance of a later frost
Safe for tender plantsMay 10only 10% chance of frost after
First fall frostOctober 18median — 10% chance by Oct 3
Growing season172 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 14 and returns around November 1.

From the NOAA station Newcastle, ME — 5 miles away, elevation 213 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 04555

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Mar 16 – Mar 30
SpinachSow outdoors · Mar 16 – Apr 6
Broccoli, cabbageStart indoors · Feb 16 – Mar 2
Broccoli, cabbageTransplant · Apr 6 – Apr 20
Onion setsPlant outdoors · Mar 30 – Apr 13
PotatoesPlant outdoors · Apr 6 – Apr 20
LettuceSow outdoors · Mar 30 – Apr 13
Carrots, beetsSow outdoors · Apr 6 – Apr 20
TomatoesStart indoors · Mar 2 – Mar 16
TomatoesTransplant · May 4 – May 18
Peppers, eggplantStart indoors · Feb 16 – Mar 2
Peppers, eggplantTransplant · May 11 – May 25
BeansSow outdoors · May 4 – May 18
Sweet cornSow outdoors · May 4 – May 18
Cucumbers, squashSow outdoors · May 4 – May 18
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 27) 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 04555 came on Apr 16 — 5 days earlier than the 1991–2020 average (Apr 21).

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 5b in Maine

493 plants native to the lower 48 states, recorded in Maine, and rated by the USDA to survive −15 °F or colder — the bottom of zone 5b. Each links to its USDA PLANTS profile.

Trees 55

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 98

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 169

alkali buttercup1 ft · blooms late spring · low shade tolerance · to −38 °Falpine bistort1 ft · blooms mid spring · high shade tolerance · to −38 °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 °FAmerican eelgrass1 ft · blooms mid summer · high shade tolerance · to −33 °F

Grasses 153

alpine timothy1.4 ft · blooms late spring · medium shade tolerance · to −43 °FAmerican beachgrass2.5 ft · blooms spring · high shade tolerance · to −28 °FAmerican cupscale3 ft · blooms early summer · high shade tolerance · to −18 °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 °F

Vines 6

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 honeysuckle16 ft · blooms late summer · low shade tolerance · to −33 °FVirginia creeper1 ft · blooms late spring · medium shade tolerance · to −28 °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 Nobleboro, ME.

Soil in Nobleboro, ME

The soil mapped at the center of ZIP 04555 is Lamoine — silt loam, somewhat poorly drained.

TextureSilt loama good balance for most vegetables
pH5.7moderately acidic; most vegetables like 6.0–7.0
DrainageSomewhat poorly drainedconsider raised beds
Organic matter6%high
Hydrologic groupC/Dslow when drained; wet otherwise
Farmland classFarmland of statewide importanceUSDA classification

Map unit: Lamoine silt loam, 3 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 04555; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Nobleboro, ME

Summer high78 °Faverage high, July
Winter low15 °Faverage low, January
Hot days2days a year at 90 °F or more
Freezing nights142nights a year at 32 °F or less
Growing degree days2,166base 50 °F — the season’s usable heat
Longest day15 h 30 mindaylight on June 21
Shortest day8 h 52 mindaylight on December 21
Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)
Precipitation49.3 inper year, rain and melted snow
Snowfall79 inper year; 88 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 30 °F, low 15 °F 30°15° JanFebruary: average high 33 °F, low 17 °F 33°17° FebMarch: average high 41 °F, low 25 °F 41°25° MarApril: average high 54 °F, low 35 °F 54°35° AprMay: average high 65 °F, low 45 °F 65°45° MayJune: average high 73 °F, low 54 °F 73°54° JunJuly: average high 78 °F, low 60 °F 78°60° JulAugust: average high 77 °F, low 59 °F 77°59° AugSeptember: average high 69 °F, low 52 °F 69°52° SepOctober: average high 57 °F, low 42 °F 57°42° OctNovember: average high 46 °F, low 32 °F 46°32° NovDecember: average high 36 °F, low 22 °F 36°22° Dec

Precipitation by month inches · ❄ = snowfall

0″1″2″3″4″5″January: 3.83 in precipitation, 19.6 in snowfall 3.8❄20 JanFebruary: 3.61 in precipitation, 20.3 in snowfall 3.6❄20 FebMarch: 4.32 in precipitation, 14.1 in snowfall 4.3❄14 MarApril: 4.17 in precipitation, 4.4 in snowfall 4.2❄4 AprMay: 3.80 in precipitation 3.8 MayJune: 4.28 in precipitation 4.3 JunJuly: 3.42 in precipitation 3.4 JulAugust: 3.35 in precipitation 3.4 AugSeptember: 4.19 in precipitation 4.2 SepOctober: 4.97 in precipitation, 0.3 in snowfall 5.0 OctNovember: 4.57 in precipitation, 3.5 in snowfall 4.6❄4 NovDecember: 4.74 in precipitation, 16.5 in snowfall 4.7❄17 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Newcastle, ME (5 mi away); precipitation: Newcastle, ME (5 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

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

045726a
Waldoboro, ME · 5 mi
045535b
Newcastle, ME · 5 mi
045436a
Damariscotta, ME · 5 mi
045355b
Alna, ME · 7 mi
043485b
Jefferson, ME · 8 mi
045516a
Bremen, ME · 8 mi
045396a
Bristol, ME · 9 mi
043535b
Whitefield, ME · 10 mi

Maine planting zones →

Questions about 04555

What planting zone is ZIP code 04555?

ZIP code 04555 (Nobleboro, ME) is in USDA hardiness zone 5b on the 2023 map: the coldest night of an average winter reaches −15 to −10 °F (−26.1 to −23.3 °C).

When is the last frost in Nobleboro, ME?

The median last spring frost (32 °F) near 04555 is April 27; after May 10 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Newcastle station.

When is the first frost in Nobleboro, ME?

The median first fall frost near 04555 is October 18, giving a median frost-free growing season of 172 days.

When should I plant tomatoes in 04555?

Start tomato seeds indoors around Mar 2 – Mar 16 and set transplants outside around May 4 – May 18, one to three weeks after the median last frost.

How much rain and snow does 04555 get?

About 49.3 inches of precipitation a year and 79 inches of snowfall (NOAA 1991–2020 normals, Newcastle station).

How hot do summers get in Nobleboro, ME?

The average high peaks at 78 °F in July, with about 2 days a year at 90 °F or more.

What kind of soil does 04555 have?

The USDA soil survey maps Lamoine at the center of ZIP 04555: silt loam, somewhat poorly drained, pH about 5.7 (moderately acidic).

Did spring come early in Nobleboro, ME in 2026?

Spring leaf-out near 04555 came on Apr 16 in 2026, 5 days earlier than the 1991–2020 average (Apr 21), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Nobleboro, ME?

Long-day onions: the longest day near 04555 is 15 h 30 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).