Data: 2023 USDA zones (PRISM/OSU) · NOAA 1991–2020 normals · updated Oct 29, 2026

Planting zone for 04449 — Hudson, ME

ZIP code 04449 (Hudson, Penobscot County) is in USDA zone 5a: the coldest winter night averages −20 to −15 °F. The median last spring frost is May 13 and the first fall frost September 28.

Where ZIP 04449 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.

Zone5a−20 to −15 °F

Coldest night−28.9 to −26.1 °C

Last frostMay 13

First frostSep 28

2012 zone4b

Was 4b 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 5a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Hudson, 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 Hudson, ME

JanFebMarAprMayJunJulAugSepOctNovDec

Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free

Last spring frostMay 13median — 50% chance of a later frost

Safe for tender plantsMay 28only 10% chance of frost after

First fall frostSeptember 28median — 10% chance by Sep 16

Growing season137 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 30 and returns around October 11.

From the NOAA station Old Town 2 W, ME — 10 miles away, elevation 128 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 04449

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Apr 1 – Apr 15

SpinachSow outdoors · Apr 1 – Apr 22

Broccoli, cabbageStart indoors · Mar 4 – Mar 18

Broccoli, cabbageTransplant · Apr 22 – May 6

Onion setsPlant outdoors · Apr 15 – Apr 29

PotatoesPlant outdoors · Apr 22 – May 6

LettuceSow outdoors · Apr 15 – Apr 29

Carrots, beetsSow outdoors · Apr 22 – May 6

TomatoesStart indoors · Mar 18 – Apr 1

TomatoesTransplant · May 20 – Jun 3

Peppers, eggplantStart indoors · Mar 4 – Mar 18

Peppers, eggplantTransplant · May 27 – Jun 10

BeansSow outdoors · May 20 – Jun 3

Sweet cornSow outdoors · May 20 – Jun 3

Cucumbers, squashSow outdoors · May 20 – Jun 3

Fall lettuce, spinachSow outdoors · Aug 3 – Aug 17

GarlicPlant cloves · Sep 14 – Oct 19

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (May 13) and first fall frost (Sep 28) 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 04449 came on Apr 16 — 9 days earlier than the 1991–2020 average (Apr 25).

average
Apr 252026
Apr 16

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 5a in Maine

483 plants native to the lower 48 states, recorded in Maine, and rated by the USDA to survive −20 °F or colder — the bottom of zone 5a. Each links to its USDA PLANTS profile.

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 Hudson, ME.

Soil in Hudson, ME

The soil mapped at the center of ZIP 04449 is Elliottsville — highly decomposed plant material, well drained.

TextureHighly decomposed plant materialtop layer

DrainageWell drainednatural drainage class

Organic matter53%high

Hydrologic groupCwater soaks in slowly

Farmland classNot prime farmlandUSDA classification

Map unit: Elliottsville-Monson complex, 3 to 15 percent slopes, rocky.

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 04449; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Hudson, ME

Summer high79 °Faverage high, July

Winter low6 °Faverage low, January

Hot days2days a year at 90 °F or more

Freezing nights173nights a year at 32 °F or less

Growing degree days1,816base 50 °F — the season’s usable heat

Longest day15 h 37 mindaylight on June 21

Shortest day8 h 46 mindaylight on December 21

Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)

Precipitation44.4 inper year, rain and melted snow

Average high and low, by month

Precipitation by month inches

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Old Town 2 W, ME (10 mi away); precipitation: Old Town 2 W, ME (10 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 5a.

044505a

Kenduskeag, ME · 6 mi

Charleston, ME · 9 mi

Maine planting zones →

Questions about 04449

What planting zone is ZIP code 04449?

ZIP code 04449 (Hudson, ME) is in USDA hardiness zone 5a on the 2023 map: the coldest night of an average winter reaches −20 to −15 °F (−28.9 to −26.1 °C).

When is the last frost in Hudson, ME?

The median last spring frost (32 °F) near 04449 is May 13; after May 28 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Old Town 2 W station.

When is the first frost in Hudson, ME?

The median first fall frost near 04449 is September 28, giving a median frost-free growing season of 137 days.

When should I plant tomatoes in 04449?

Start tomato seeds indoors around Mar 18 – Apr 1 and set transplants outside around May 20 – Jun 3, one to three weeks after the median last frost.

How much rain and snow does 04449 get?

About 44.4 inches of precipitation a year (NOAA 1991–2020 normals, Old Town 2 W station).

How hot do summers get in Hudson, ME?

The average high peaks at 79 °F in July, with about 2 days a year at 90 °F or more.

What kind of soil does 04449 have?

The USDA soil survey maps Elliottsville at the center of ZIP 04449: highly decomposed plant material, well drained.

Did spring come early in Hudson, ME in 2026?

Spring leaf-out near 04449 came on Apr 16 in 2026, 9 days earlier than the 1991–2020 average (Apr 25), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Hudson, ME?

Long-day onions: the longest day near 04449 is 15 h 37 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).

Did the zone for 04449 change?

Yes. The 2012 USDA map put 04449 in zone 4b; the 2023 map puts it in zone 5a. The newer map uses 1991–2020 data and more weather stations.