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

Planting zone for 62334 — Elvaston, IL

ZIP code 62334 (Elvaston, Hancock County) is in USDA zone 6a: the coldest winter night averages −10 to −5 °F. The median last spring frost is April 10 and the first fall frost October 27.

Where ZIP 62334 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.

Zone6a−10 to −5 °F

Coldest night−23.3 to −20.6 °C

Last frostApr 10

First frostOct 27

2012 zone5b

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 Service

Loading the forecast for Elvaston, IL…

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 Elvaston, IL

JanFebMarAprMayJunJulAugSepOctNovDec

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

Last spring frostApril 10median — 50% chance of a later frost

Safe for tender plantsApril 26only 10% chance of frost after

First fall frostOctober 27median — 10% chance by Oct 10

Growing season198 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 2 and returns around November 5.

From the NOAA station Keokuk Lock Dam 19, IA — 7 miles away, elevation 528 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 62334

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Feb 27 – Mar 13

SpinachSow outdoors · Feb 27 – Mar 20

Broccoli, cabbageStart indoors · Jan 30 – Feb 13

Broccoli, cabbageTransplant · Mar 20 – Apr 3

Onion setsPlant outdoors · Mar 13 – Mar 27

PotatoesPlant outdoors · Mar 20 – Apr 3

LettuceSow outdoors · Mar 13 – Mar 27

Carrots, beetsSow outdoors · Mar 20 – Apr 3

TomatoesStart indoors · Feb 13 – Feb 27

TomatoesTransplant · Apr 17 – May 1

Peppers, eggplantStart indoors · Jan 30 – Feb 13

Peppers, eggplantTransplant · Apr 24 – May 8

BeansSow outdoors · Apr 17 – May 1

Sweet cornSow outdoors · Apr 17 – May 1

Cucumbers, squashSow outdoors · Apr 17 – May 1

Fall lettuce, spinachSow outdoors · Sep 1 – Sep 15

GarlicPlant cloves · Oct 13 – Nov 17

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 10) and first fall frost (Oct 27) 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 62334 came on Mar 11 — 17 days earlier than the 1991–2020 average (Mar 28).

average
Mar 282026
Mar 11

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 Elvaston, IL

The soil mapped at the center of ZIP 62334 is Ipava — silt loam, somewhat poorly drained.

TextureSilt loama good balance for most vegetables

pH7.3neutral; most vegetables like 6.0–7.0

DrainageSomewhat poorly drainedconsider raised beds

Organic matter2.5%moderate

Hydrologic groupC/Dslow when drained; wet otherwise

Farmland classprime farmlandUSDA classification

Map unit: Ipava silt loam, 2 to 5 percent slopes, eroded.

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 62334; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Elvaston, IL

Summer high86 °Faverage high, July

Winter low17 °Faverage low, January

Hot days26days a year at 90 °F or more

Freezing nights117nights a year at 32 °F or less

Growing degree days3,574base 50 °F — the season’s usable heat

Longest day15 h 04 mindaylight on June 21

Shortest day9 h 17 mindaylight on December 21

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

Precipitation41.3 inper year, rain and melted snow

Snowfall22 inper year

Average high and low, by month

Precipitation by month inches · ❄ = snowfall

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Keokuk Lock Dam 19, IA (7 mi away); precipitation: Carthage, IL (6 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 6a.

West Point, IL · 11 mi

623796a

Warsaw, IL · 12 mi

Illinois planting zones →

Questions about 62334

What planting zone is ZIP code 62334?

ZIP code 62334 (Elvaston, IL) 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 Elvaston, IL?

The median last spring frost (32 °F) near 62334 is April 10; after April 26 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Keokuk Lock Dam 19 station.

When is the first frost in Elvaston, IL?

The median first fall frost near 62334 is October 27, giving a median frost-free growing season of 198 days.

When should I plant tomatoes in 62334?

Start tomato seeds indoors around Feb 13 – Feb 27 and set transplants outside around Apr 17 – May 1, one to three weeks after the median last frost.

How much rain and snow does 62334 get?

About 41.3 inches of precipitation a year and 22 inches of snowfall (NOAA 1991–2020 normals, Carthage station).

How hot do summers get in Elvaston, IL?

The average high peaks at 86 °F in July, with about 26 days a year at 90 °F or more.

What kind of soil does 62334 have?

The USDA soil survey maps Ipava at the center of ZIP 62334: silt loam, somewhat poorly drained, pH about 7.3 (neutral).

Did spring come early in Elvaston, IL in 2026?

Spring leaf-out near 62334 came on Mar 11 in 2026, 17 days earlier than the 1991–2020 average (Mar 28), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Elvaston, IL?

Long-day onions: the longest day near 62334 is 15 h 04 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).

Did the zone for 62334 change?

Yes. The 2012 USDA map put 62334 in zone 5b; the 2023 map puts it in zone 6a. The newer map uses 1991–2020 data and more weather stations.