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

Planting zone for 67660 — Pfeifer, KS

ZIP code 67660 (Pfeifer, Ellis 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 October 10.

Where ZIP 67660 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 frostOct 10
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 Pfeifer, KS…

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 Pfeifer, KS

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 11only 10% chance of frost after
First fall frostOctober 10median — 10% chance by Sep 26
Growing season162 daysfrost-free, median

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

From the NOAA station Bison 3nw, KS — 12 miles away, elevation 2,041 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 67660

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 15 – Aug 29
GarlicPlant cloves · Sep 26 – Oct 31
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Apr 30) and first fall frost (Oct 10) 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 67660 came on Feb 24 — 20 days earlier than the 1991–2020 average (Mar 16).

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 Pfeifer, KS

The soil mapped at the center of ZIP 67660 is Eltree — silt loam, well drained.

TextureSilt loama good balance for most vegetables
pH7.5slightly alkaline; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter2%moderate
Hydrologic groupBwater soaks in moderately
Farmland classprime farmlandUSDA classification

Map unit: Eltree silt loam, 3 to 7 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 67660; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Pfeifer, KS

Summer high92 °Faverage high, July
Winter low16 °Faverage low, January
Hot days71days a year at 90 °F or more
Freezing nights145nights a year at 32 °F or less
Growing degree days3,795base 50 °F — the season’s usable heat
Longest day14 h 53 mindaylight on June 21
Shortest day9 h 27 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation24.2 inper year, rain and melted snow
Snowfall18 inper year; 23 days with snow on the ground

Average high and low, by month

10°20°30°40°50°60°70°80°90°100°32 °FJanuary: average high 43 °F, low 16 °F 43°16° JanFebruary: average high 47 °F, low 18 °F 47°18° FebMarch: average high 58 °F, low 28 °F 58°28° MarApril: average high 67 °F, low 37 °F 67°37° AprMay: average high 76 °F, low 49 °F 76°49° MayJune: average high 88 °F, low 60 °F 88°60° JunJuly: average high 92 °F, low 64 °F 92°64° JulAugust: average high 90 °F, low 62 °F 90°62° AugSeptember: average high 83 °F, low 54 °F 83°54° SepOctober: average high 70 °F, low 39 °F 70°39° OctNovember: average high 56 °F, low 27 °F 56°27° NovDecember: average high 44 °F, low 18 °F 44°18° Dec

Precipitation by month inches · ❄ = snowfall

0″1″2″3″4″5″January: 0.55 in precipitation, 4.2 in snowfall 0.6❄4 JanFebruary: 0.79 in precipitation, 4.8 in snowfall 0.8❄5 FebMarch: 1.33 in precipitation, 2.8 in snowfall 1.3❄3 MarApril: 2.04 in precipitation, 0.7 in snowfall 2.0❄1 AprMay: 4.06 in precipitation 4.1 MayJune: 3.31 in precipitation 3.3 JunJuly: 3.65 in precipitation 3.6 JulAugust: 3.31 in precipitation 3.3 AugSeptember: 1.72 in precipitation 1.7 SepOctober: 1.70 in precipitation, 0.4 in snowfall 1.7 OctNovember: 0.90 in precipitation, 1.7 in snowfall 0.9❄2 NovDecember: 0.88 in precipitation, 3.3 in snowfall 0.9❄3 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Bison 3nw, KS (12 mi away); precipitation: Loretta 1w, KS (6 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

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

675206a
Bison, KS · 9 mi
675656b
Otis, KS · 10 mi
676716b
Victoria, KS · 11 mi
676746b
Walker, KS · 12 mi
675486a
La Crosse, KS · 13 mi
676406b
Gorham, KS · 14 mi
676276b
Catharine, KS · 15 mi
676016b
Hays, KS · 15 mi

Kansas planting zones →

Questions about 67660

What planting zone is ZIP code 67660?

ZIP code 67660 (Pfeifer, KS) 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 Pfeifer, KS?

The median last spring frost (32 °F) near 67660 is April 30; after May 11 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Bison 3nw station.

When is the first frost in Pfeifer, KS?

The median first fall frost near 67660 is October 10, giving a median frost-free growing season of 162 days.

When should I plant tomatoes in 67660?

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 67660 get?

About 24.2 inches of precipitation a year and 18 inches of snowfall (NOAA 1991–2020 normals, Loretta 1w station).

How hot do summers get in Pfeifer, KS?

The average high peaks at 92 °F in July, with about 71 days a year at 90 °F or more.

What kind of soil does 67660 have?

The USDA soil survey maps Eltree at the center of ZIP 67660: silt loam, well drained, pH about 7.5 (slightly alkaline).

Did spring come early in Pfeifer, KS in 2026?

Spring leaf-out near 67660 came on Feb 24 in 2026, 20 days earlier than the 1991–2020 average (Mar 16), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Pfeifer, KS?

Intermediate onions: the longest day near 67660 is 14 h 53 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

Did the zone for 67660 change?

Yes. The 2012 USDA map put 67660 in zone 6a; the 2023 map puts it in zone 6b. The newer map uses 1991–2020 data and more weather stations.