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

Planting zone for 04774 — Saint Francis, ME

ZIP code 04774 (Saint Francis, Aroostook County) is in USDA zone 4b: the coldest winter night averages −25 to −20 °F. The median last spring frost is June 2 and the first fall frost September 15.

Where ZIP 04774 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.

Zone4b−25 to −20 °F

Coldest night−31.7 to −28.9 °C

Last frostJun 2

First frostSep 15

2012 zone3b

Was 3b on the 2012 map — a full zone warmer now. The zone is the one at the center of the ZIP code; hilly ZIPs can span two zones. What zone 4b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Saint Francis, 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 Saint Francis, ME

JanFebMarAprMayJunJulAugSepOctNovDec

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

Last spring frostJune 2median — 50% chance of a later frost

Safe for tender plantsJune 21only 10% chance of frost after

First fall frostSeptember 15median — 10% chance by Aug 29

Growing season102 daysfrost-free, median

A hard freeze (28 °F) usually ends around May 20 and returns around September 29.

From the NOAA station Allagash, ME — 2 miles away, elevation 597 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 04774

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Apr 21 – May 5

SpinachSow outdoors · Apr 21 – May 12

Broccoli, cabbageStart indoors · Mar 24 – Apr 7

Broccoli, cabbageTransplant · May 12 – May 26

Onion setsPlant outdoors · May 5 – May 19

PotatoesPlant outdoors · May 12 – May 26

LettuceSow outdoors · May 5 – May 19

Carrots, beetsSow outdoors · May 12 – May 26

TomatoesStart indoors · Apr 7 – Apr 21

TomatoesTransplant · Jun 9 – Jun 23

Peppers, eggplantStart indoors · Mar 24 – Apr 7

Peppers, eggplantTransplant · Jun 16 – Jun 30

BeansSow outdoors · Jun 9 – Jun 23

Sweet cornSow outdoors · Jun 9 – Jun 23

Cucumbers, squashSow outdoors · Jun 9 – Jun 23

Fall lettuce, spinachSow outdoors · Jul 21 – Aug 4

GarlicPlant cloves · Sep 1 – Oct 6

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Jun 2) and first fall frost (Sep 15) 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 04774 came on May 3 — 4 days earlier than the 1991–2020 average (May 7).

average
May 72026
May 3

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 Saint Francis, ME

The soil mapped at the center of ZIP 04774 is Hogback — highly decomposed plant material, well drained.

TextureHighly decomposed plant materialtop layer

DrainageWell drainednatural drainage class

Organic matter79.39%high

Hydrologic groupDwater soaks in very slowly

Farmland classNot prime farmlandUSDA classification

Map unit: Hogback-Rawsonville complex, 3 to 25 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 04774; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Saint Francis, ME

Summer high77 °Faverage high, July

Winter low−6 °Faverage low, January

Hot days2days a year at 90 °F or more

Freezing nights218nights a year at 32 °F or less

Growing degree days1,392base 50 °F — the season’s usable heat

Longest day15 h 55 mindaylight on June 21

Shortest day8 h 29 mindaylight on December 21

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

Precipitation37.5 inper year, rain and melted snow

Snowfall100 inper year; 146 days with snow on the ground

Average high and low, by month

Precipitation by month inches · ❄ = snowfall

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

Nearby ZIP codes

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

047434b

Fort Kent, ME · 14 mi

047814a

Wallagrass, ME · 19 mi

047444a

Fort Kent Mills, ME · 22 mi

047394a

Eagle Lake, ME · 22 mi

047684a

Portage, ME · 23 mi

047454b

Frenchville, ME · 31 mi

047794a

Sinclair, ME · 33 mi

047724a

Saint Agatha, ME · 34 mi

Maine planting zones →

Questions about 04774

What planting zone is ZIP code 04774?

ZIP code 04774 (Saint Francis, ME) is in USDA hardiness zone 4b on the 2023 map: the coldest night of an average winter reaches −25 to −20 °F (−31.7 to −28.9 °C).

When is the last frost in Saint Francis, ME?

The median last spring frost (32 °F) near 04774 is June 2; after June 21 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Allagash station.

When is the first frost in Saint Francis, ME?

The median first fall frost near 04774 is September 15, giving a median frost-free growing season of 102 days.

When should I plant tomatoes in 04774?

Start tomato seeds indoors around Apr 7 – Apr 21 and set transplants outside around Jun 9 – Jun 23, one to three weeks after the median last frost.

How much rain and snow does 04774 get?

About 37.5 inches of precipitation a year and 100 inches of snowfall (NOAA 1991–2020 normals, Allagash station).

How hot do summers get in Saint Francis, 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 04774 have?

The USDA soil survey maps Hogback at the center of ZIP 04774: highly decomposed plant material, well drained.

Did spring come early in Saint Francis, ME in 2026?

Spring leaf-out near 04774 came on May 3 in 2026, 4 days earlier than the 1991–2020 average (May 7), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Saint Francis, ME?

Long-day onions: the longest day near 04774 is 15 h 55 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).

Did the zone for 04774 change?

Yes. The 2012 USDA map put 04774 in zone 3b; the 2023 map puts it in zone 4b. The newer map uses 1991–2020 data and more weather stations.