Data: 2023 USDA zones (PRISM/OSU) · NOAA 1991–2020 normals · updated Oct 30, 2026

Planting zone for 49682 — Suttons Bay, MI

ZIP code 49682 (Suttons Bay, Leelanau County) is in USDA zone 6b: the coldest winter night averages −5 to 0 °F. The median last spring frost is April 30 and the first fall frost November 1.

Where ZIP 49682 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.

Zone6b−5 to 0 °F

Coldest night−20.6 to −17.8 °C

Last frostApr 30

First frostNov 1

2012 zone6a

Was 6a 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 6b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Suttons Bay, MI…

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 Suttons Bay, MI

JanFebMarAprMayJunJulAugSepOctNovDec

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

Last spring frostApril 30median — 50% chance of a later frost

Safe for tender plantsMay 15only 10% chance of frost after

First fall frostNovember 1median — 10% chance by Oct 16

Growing season182 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 18 and returns around November 12.

From the NOAA station Nw Michigan Rsch Farm, MI — 7 miles away, elevation 820 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 49682

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Mar 19 – Apr 2

SpinachSow outdoors · Mar 19 – Apr 9

Broccoli, cabbageStart indoors · Feb 19 – Mar 5

Broccoli, cabbageTransplant · Apr 9 – Apr 23

Onion setsPlant outdoors · Apr 2 – Apr 16

PotatoesPlant outdoors · Apr 9 – Apr 23

LettuceSow outdoors · Apr 2 – Apr 16

Carrots, beetsSow outdoors · Apr 9 – Apr 23

TomatoesStart indoors · Mar 5 – Mar 19

TomatoesTransplant · May 7 – May 21

Peppers, eggplantStart indoors · Feb 19 – Mar 5

Peppers, eggplantTransplant · May 14 – May 28

BeansSow outdoors · May 7 – May 21

Sweet cornSow outdoors · May 7 – May 21

Cucumbers, squashSow outdoors · May 7 – May 21

Fall lettuce, spinachSow outdoors · Sep 6 – Sep 20

GarlicPlant cloves · Oct 18 – Nov 22

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 30) and first fall frost (Nov 1) 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 49682 came on Apr 18 — about the same time as the 1991–2020 average (Apr 19).

average
Apr 192026
Apr 18

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 6b in Michigan

582 plants native to the lower 48 states, recorded in Michigan, and rated by the USDA to survive −5 °F or colder — the bottom of zone 6b. 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 Suttons Bay, MI.

Soil in Suttons Bay, MI

The soil mapped at the center of ZIP 49682 is Emmet — sandy loam, well drained.

TextureSandy loamdrains and warms fast; dries out and needs more feeding

pH6.1slightly acidic; most vegetables like 6.0–7.0

DrainageWell drainednatural drainage class

Organic matter2%moderate

Hydrologic groupBwater soaks in moderately

Farmland classNot prime farmlandUSDA classification

Map unit: Emmet-Omena sandy loams, 25 to 50 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 49682; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Suttons Bay, MI

Summer high79 °Faverage high, July

Winter low19 °Faverage low, January

Hot days5days a year at 90 °F or more

Freezing nights133nights a year at 32 °F or less

Growing degree days2,387base 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)

Precipitation34.2 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: Nw Michigan Rsch Farm, MI (7 mi away); precipitation: Northport 5.0 Ssw, MI (5 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

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

496536b

Lake Leelanau, MI · 4 mi

496746b

Omena, MI · 5 mi

496736b

Old Mission, MI · 8 mi

Traverse City, MI · 11 mi

496296a

Elk Rapids, MI · 13 mi

496646b

Maple City, MI · 14 mi

Michigan planting zones →

Questions about 49682

What planting zone is ZIP code 49682?

ZIP code 49682 (Suttons Bay, MI) is in USDA hardiness zone 6b on the 2023 map: the coldest night of an average winter reaches −5 to 0 °F (−20.6 to −17.8 °C).

When is the last frost in Suttons Bay, MI?

The median last spring frost (32 °F) near 49682 is April 30; after May 15 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Nw Michigan Rsch Farm station.

When is the first frost in Suttons Bay, MI?

The median first fall frost near 49682 is November 1, giving a median frost-free growing season of 182 days.

When should I plant tomatoes in 49682?

Start tomato seeds indoors around Mar 5 – Mar 19 and set transplants outside around May 7 – May 21, one to three weeks after the median last frost.

How much rain and snow does 49682 get?

About 34.2 inches of precipitation a year (NOAA 1991–2020 normals, Northport 5.0 Ssw station).

How hot do summers get in Suttons Bay, MI?

The average high peaks at 79 °F in July, with about 5 days a year at 90 °F or more.

What kind of soil does 49682 have?

The USDA soil survey maps Emmet at the center of ZIP 49682: sandy loam, well drained, pH about 6.1 (slightly acidic).

Did spring come early in Suttons Bay, MI in 2026?

Spring leaf-out near 49682 came on Apr 18 in 2026, about the same as the 1991–2020 average (Apr 19), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Suttons Bay, MI?

Long-day onions: the longest day near 49682 is 15 h 37 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).

Did the zone for 49682 change?

Yes. The 2012 USDA map put 49682 in zone 6a; the 2023 map puts it in zone 6b. The newer map uses 1991–2020 data and more weather stations.