Planting zone for 04650 — Little Deer Isle, ME
ZIP code 04650 (Little Deer Isle, Hancock County) is in USDA zone 6a: the coldest winter night averages −10 to −5 °F. The median last spring frost is May 7 and the first fall frost October 5.
Where ZIP 04650 is
Outlined: the ZIP code area · tap the map for the zone at any spot · scroll or pinch to zoomNot 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.
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 ServiceLoading the forecast for Little Deer Isle, 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 Little Deer Isle, ME
A hard freeze (28 °F) usually ends around April 27 and returns around October 19.
From the NOAA station Belfast, ME — 15 miles away, elevation 20 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 04650
Counted from the median last spring frost (May 7) and first fall frost (Oct 5) 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 04650 came on Apr 17 — 6 days earlier than the 1991–2020 average (Apr 23).
Apr 232026
Apr 17
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 Little Deer Isle, ME
The soil mapped at the center of ZIP 04650 is Schoodic — moderately decomposed plant material, excessively drained.
Map unit: Schoodic-Rock outcrop complex, 0 to 15 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 04650; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.
Climate in Little Deer Isle, ME
Average high and low, by month
Precipitation by month inches · ❄ = snowfall
NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Belfast, ME (15 mi away); precipitation: Belfast, ME (15 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.
Questions about 04650
What planting zone is ZIP code 04650?
ZIP code 04650 (Little Deer Isle, ME) 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 Little Deer Isle, ME?
The median last spring frost (32 °F) near 04650 is May 7; after May 21 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Belfast station.
When is the first frost in Little Deer Isle, ME?
The median first fall frost near 04650 is October 5, giving a median frost-free growing season of 151 days.
When should I plant tomatoes in 04650?
Start tomato seeds indoors around Mar 12 – Mar 26 and set transplants outside around May 14 – May 28, one to three weeks after the median last frost.
How much rain and snow does 04650 get?
About 48.8 inches of precipitation a year and 72 inches of snowfall (NOAA 1991–2020 normals, Belfast station).
How hot do summers get in Little Deer Isle, ME?
The average high peaks at 77 °F in July, with about 2 days a year at 90 °F or more.
What kind of soil does 04650 have?
The USDA soil survey maps Schoodic at the center of ZIP 04650: moderately decomposed plant material, excessively drained, pH about 4.0 (strongly acidic).
Did spring come early in Little Deer Isle, ME in 2026?
Spring leaf-out near 04650 came on Apr 17 in 2026, 6 days earlier than the 1991–2020 average (Apr 23), according to the USA National Phenology Network Spring Index.
What kind of onions grow in Little Deer Isle, ME?
Long-day onions: the longest day near 04650 is 15 h 31 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).
Did the zone for 04650 change?
Yes. The 2012 USDA map put 04650 in zone 5b; the 2023 map puts it in zone 6a. The newer map uses 1991–2020 data and more weather stations.