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

Planting zone for 55592 — Maple Plain, MN

ZIP code 55592 (Maple Plain, Wright County) is in USDA zone 4b: the coldest winter night averages −25 to −20 °F. The median last spring frost is April 30 and the first fall frost October 9.

Where ZIP 55592 is

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 frostApr 30
First frostOct 9
2012 zone4b

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 4b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Maple Plain, MN…

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 Maple Plain, MN

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 13only 10% chance of frost after
First fall frostOctober 9median — 10% chance by Sep 25
Growing season163 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 19 and returns around October 21.

From the NOAA station Buffalo 2ne, MN — 2 miles away, elevation 991 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 55592

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 · Aug 14 – Aug 28
GarlicPlant cloves · Sep 25 – Oct 30
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 30) and first fall frost (Oct 9) 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 55592 came on Apr 14 — 4 days earlier than the 1991–2020 average (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).

Soil in Maple Plain, MN

The soil mapped at the center of ZIP 55592 is Malardi — sandy loam, somewhat excessively drained.

TextureSandy loamdrains and warms fast; dries out and needs more feeding
pH6.5neutral; most vegetables like 6.0–7.0
DrainageSomewhat excessively drainednatural drainage class
Organic matter3%moderate
Hydrologic groupAwater soaks in fast
Farmland classFarmland of statewide importanceUSDA classification

Map unit: Malardi-Hawick complex, 1 to 6 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 55592; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Maple Plain, MN

Summer high81 °Faverage high, July
Winter low3 °Faverage low, January
Hot days6days a year at 90 °F or more
Freezing nights163nights a year at 32 °F or less
Growing degree days2,462base 50 °F — the season’s usable heat
Longest day15 h 39 mindaylight on June 21
Shortest day8 h 44 mindaylight on December 21
Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)
Precipitation31.7 inper year, rain and melted snow
Snowfall40 inper year; 95 days with snow on the ground

Average high and low, by month

−10°0°10°20°30°40°50°60°70°80°90°32 °FJanuary: average high 21 °F, low 3 °F 21°3° JanFebruary: average high 27 °F, low 7 °F 27°7° FebMarch: average high 39 °F, low 21 °F 39°21° MarApril: average high 54 °F, low 35 °F 54°35° AprMay: average high 67 °F, low 47 °F 67°47° MayJune: average high 77 °F, low 57 °F 77°57° JunJuly: average high 81 °F, low 61 °F 81°61° JulAugust: average high 79 °F, low 59 °F 79°59° AugSeptember: average high 71 °F, low 51 °F 71°51° SepOctober: average high 57 °F, low 37 °F 57°37° OctNovember: average high 40 °F, low 24 °F 40°24° NovDecember: average high 27 °F, low 11 °F 27°11° Dec

Precipitation by month inches · ❄ = snowfall

0″1″2″3″4″5″January: 0.69 in precipitation, 7.3 in snowfall 0.7❄7 JanFebruary: 1.02 in precipitation, 8 in snowfall 1.0❄8 FebMarch: 1.43 in precipitation, 6.8 in snowfall 1.4❄7 MarApril: 2.57 in precipitation, 2.6 in snowfall 2.6❄3 AprMay: 4.23 in precipitation 4.2 MayJune: 4.41 in precipitation 4.4 JunJuly: 4.33 in precipitation 4.3 JulAugust: 4.50 in precipitation 4.5 AugSeptember: 3.39 in precipitation 3.4 SepOctober: 2.51 in precipitation, 0.2 in snowfall 2.5 OctNovember: 1.52 in precipitation, 5.6 in snowfall 1.5❄6 NovDecember: 1.14 in precipitation, 9.3 in snowfall 1.1❄9 Dec

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

Nearby ZIP codes

All 8 nearest ZIP codes share zone 4b.

553134b
Buffalo, MN · 3 mi
553584b
Maple Lake, MN · 6 mi
553624b
Monticello, MN · 7 mi
553764b
Saint Michael, MN · 10 mi
553904b
Waverly, MN · 10 mi
555724b
Rockford, MN · 11 mi
553734b
Rockford, MN · 11 mi
553634b
Montrose, MN · 11 mi

All 4 ZIP codes in Maple Plain → · Minnesota planting zones →

Questions about 55592

What planting zone is ZIP code 55592?

ZIP code 55592 (Maple Plain, MN) 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 Maple Plain, MN?

The median last spring frost (32 °F) near 55592 is April 30; after May 13 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Buffalo 2ne station.

When is the first frost in Maple Plain, MN?

The median first fall frost near 55592 is October 9, giving a median frost-free growing season of 163 days.

When should I plant tomatoes in 55592?

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 55592 get?

About 31.7 inches of precipitation a year and 40 inches of snowfall (NOAA 1991–2020 normals, Buffalo 2ne station).

How hot do summers get in Maple Plain, MN?

The average high peaks at 81 °F in July, with about 6 days a year at 90 °F or more.

What kind of soil does 55592 have?

The USDA soil survey maps Malardi at the center of ZIP 55592: sandy loam, somewhat excessively drained, pH about 6.5 (neutral).

Did spring come early in Maple Plain, MN in 2026?

Spring leaf-out near 55592 came on Apr 14 in 2026, 4 days earlier than the 1991–2020 average (Apr 18), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Maple Plain, MN?

Long-day onions: the longest day near 55592 is 15 h 39 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).