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

Planting zone for 57434 — Conde, SD

ZIP code 57434 (Conde, Spink County) is in USDA zone 4a: the coldest winter night averages −30 to −25 °F. The median last spring frost is May 6 and the first fall frost September 29.

Where ZIP 57434 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.

Zone4a−30 to −25 °F
Coldest night−34.4 to −31.7 °C
Last frostMay 6
First frostSep 29
2012 zone4a

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 4a means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Conde, SD…

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 Conde, SD

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostMay 6median — 50% chance of a later frost
Safe for tender plantsMay 20only 10% chance of frost after
First fall frostSeptember 29median — 10% chance by Sep 16
Growing season144 daysfrost-free, median

A hard freeze (28 °F) usually ends around April 29 and returns around October 7.

From the NOAA station Conde, SD — 2 miles away, elevation 1,329 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 57434

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Mar 25 – Apr 8
SpinachSow outdoors · Mar 25 – Apr 15
Broccoli, cabbageStart indoors · Feb 25 – Mar 11
Broccoli, cabbageTransplant · Apr 15 – Apr 29
Onion setsPlant outdoors · Apr 8 – Apr 22
PotatoesPlant outdoors · Apr 15 – Apr 29
LettuceSow outdoors · Apr 8 – Apr 22
Carrots, beetsSow outdoors · Apr 15 – Apr 29
TomatoesStart indoors · Mar 11 – Mar 25
TomatoesTransplant · May 13 – May 27
Peppers, eggplantStart indoors · Feb 25 – Mar 11
Peppers, eggplantTransplant · May 20 – Jun 3
BeansSow outdoors · May 13 – May 27
Sweet cornSow outdoors · May 13 – May 27
Cucumbers, squashSow outdoors · May 13 – May 27
Fall lettuce, spinachSow outdoors · Aug 4 – Aug 18
GarlicPlant cloves · Sep 15 – Oct 20
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (May 6) and first fall frost (Sep 29) 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 57434 came on Apr 8 — 10 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 Conde, SD

The soil mapped at the center of ZIP 57434 is Aastad — loam, moderately well drained.

TextureLoama good balance for most vegetables
pH7.0neutral; most vegetables like 6.0–7.0
DrainageModerately well drainednatural drainage class
Organic matter5%high
Hydrologic groupCwater soaks in slowly
Farmland classprime farmlandUSDA classification

Map unit: Aastad-Forman loams, 0 to 3 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 57434; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Conde, SD

Summer high84 °Faverage high, July
Winter low2 °Faverage low, January
Hot days16days a year at 90 °F or more
Freezing nights182nights a year at 32 °F or less
Growing degree days2,516base 50 °F — the season’s usable heat
Longest day15 h 38 mindaylight on June 21
Shortest day8 h 45 mindaylight on December 21
Onions to growLong-daysummer days reach 15+ hours, enough for long-day varieties (intermediate types work too)
Precipitation24.1 inper year, rain and melted snow
Snowfall28 inper year; 86 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 23 °F, low 2 °F 23°2° JanFebruary: average high 28 °F, low 6 °F 28°6° FebMarch: average high 40 °F, low 19 °F 40°19° MarApril: average high 56 °F, low 31 °F 56°31° AprMay: average high 68 °F, low 44 °F 68°44° MayJune: average high 78 °F, low 55 °F 78°55° JunJuly: average high 84 °F, low 60 °F 84°60° JulAugust: average high 82 °F, low 57 °F 82°57° AugSeptember: average high 74 °F, low 48 °F 74°48° SepOctober: average high 60 °F, low 34 °F 60°34° OctNovember: average high 42 °F, low 20 °F 42°20° NovDecember: average high 29 °F, low 8 °F 29°8° Dec

Precipitation by month inches · ❄ = snowfall

0″1″2″3″4″5″January: 0.59 in precipitation, 5.4 in snowfall 0.6❄5 JanFebruary: 0.62 in precipitation, 6.4 in snowfall 0.6❄6 FebMarch: 0.97 in precipitation, 3.9 in snowfall 1.0❄4 MarApril: 2.42 in precipitation, 2.3 in snowfall 2.4❄2 AprMay: 2.83 in precipitation 2.8 MayJune: 4.06 in precipitation 4.1 JunJuly: 3.61 in precipitation 3.6 JulAugust: 2.69 in precipitation 2.7 AugSeptember: 2.57 in precipitation 2.6 SepOctober: 2.27 in precipitation, 0.4 in snowfall 2.3 OctNovember: 0.79 in precipitation, 5.1 in snowfall 0.8❄5 NovDecember: 0.72 in precipitation, 4.5 in snowfall 0.7❄5 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Conde, SD (2 mi away); precipitation: Conde, SD (2 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.

574774b
Turton, SD · 10 mi
574294a
Brentford, SD · 11 mi
574394a
Ferney, SD · 12 mi
574744a
Stratford, SD · 13 mi
572194b
Bristol, SD · 16 mi
574614a
Mellette, SD · 18 mi
574224b
Andover, SD · 19 mi
574794a
Warner, SD · 20 mi

South Dakota planting zones →

Questions about 57434

What planting zone is ZIP code 57434?

ZIP code 57434 (Conde, SD) is in USDA hardiness zone 4a on the 2023 map: the coldest night of an average winter reaches −30 to −25 °F (−34.4 to −31.7 °C).

When is the last frost in Conde, SD?

The median last spring frost (32 °F) near 57434 is May 6; after May 20 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Conde station.

When is the first frost in Conde, SD?

The median first fall frost near 57434 is September 29, giving a median frost-free growing season of 144 days.

When should I plant tomatoes in 57434?

Start tomato seeds indoors around Mar 11 – Mar 25 and set transplants outside around May 13 – May 27, one to three weeks after the median last frost.

How much rain and snow does 57434 get?

About 24.1 inches of precipitation a year and 28 inches of snowfall (NOAA 1991–2020 normals, Conde station).

How hot do summers get in Conde, SD?

The average high peaks at 84 °F in July, with about 16 days a year at 90 °F or more.

What kind of soil does 57434 have?

The USDA soil survey maps Aastad at the center of ZIP 57434: loam, moderately well drained, pH about 7.0 (neutral).

Did spring come early in Conde, SD in 2026?

Spring leaf-out near 57434 came on Apr 8 in 2026, 10 days earlier than the 1991–2020 average (Apr 18), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Conde, SD?

Long-day onions: the longest day near 57434 is 15 h 38 min, so summer days reach 15+ hours, enough for long-day varieties (intermediate types work too).