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USDA Hardiness Zone 6a

Frost Dates for 67851 — Holcomb, Kansas

NOAA 1991–2020 normals from Garden City Exp Stn, KS (2,890 ft), 13 miles southeast.

Updated

In Holcomb, the last spring frost (32°F) is around April 28 in half of years and has passed by May 9 in nine years out of ten. The first fall frost comes around October 17, as early as October 1 one year in ten, leaving a typical freeze-free season of 171 days (NOAA, Garden City Exp Stn, KS).

Last spring frost
April 28

50% probability

First fall frost
October 17

50% probability

Growing season
171 days

freeze-free, 50%

Hardiness zone
6a

-10 to -5°F (-23.3 to -20.6°C) coldest night

First snow
November 29

median, 1991–2020

Last snow
March 25

median, 1991–2020

Winters with snow
100%

30 of 30 observed

Snow per year
15.6"

NOAA normal

Frost risk by date in Holcomb

Half of springs at Garden City Exp Stn, KS see their last 32°F night by April 28; only one in ten is past it by April 13, and one in ten still has one after May 9. Planting tender crops after May 3 leaves a 30% risk of a frost on them, after May 5 20%, and after May 9 10%. The 11 days between the even-odds date and the one-in-ten date is narrower than at 97% of the 110 Kansas stations behind this site's ZIP pages.

In fall the first 32°F night comes by October 17 in half of years, as early as October 1 one year in ten, and holds off past October 28 one year in ten. A hard freeze of 28°F follows 8 days later, around October 25; in spring the one-in-ten date for 28°F is May 2, 7 days before the 32°F one. The freeze-free season lasts 171 days in a typical year, shorter than at 90% of the 110 Kansas stations; it reaches 191 days one year in ten and falls short of 151 one year in ten. On average 148 nights a year drop to 32°F or below. Nights of 36°F, when frost can still settle on leaves in low, open spots, continue 8 days longer, to about May 6, and return around October 7. Severe cold of 16°F or below comes every winter, usually between November 19 and March 14.

Spring: the chance of another night this cold after the date
Low90%80%70%60%50%40%30%20%10%
36°FApr 24Apr 29May 1May 4May 6May 8May 10May 13May 18
32°FApr 13Apr 17Apr 21Apr 25Apr 28Apr 30May 3May 5May 9
28°FApr 2Apr 6Apr 10Apr 14Apr 17Apr 20Apr 24Apr 28May 2
24°FMar 19Mar 26Mar 31Apr 2Apr 6Apr 8Apr 12Apr 18Apr 23
20°FMar 7Mar 13Mar 18Mar 23Mar 27Mar 31Apr 2Apr 6Apr 12
16°FFeb 26Mar 3Mar 7Mar 11Mar 14Mar 19Mar 24Mar 31Apr 4
Fall: the chance the first night this cold has come by the date
Low10%20%30%40%50%60%70%80%90%
36°FSep 24Sep 29Oct 2Oct 5Oct 7Oct 10Oct 12Oct 15Oct 19
32°FOct 1Oct 7Oct 11Oct 14Oct 17Oct 20Oct 22Oct 24Oct 28
28°FOct 12Oct 17Oct 21Oct 23Oct 25Oct 28Oct 31Nov 2Nov 6
24°FOct 20Oct 24Oct 28Oct 31Nov 2Nov 5Nov 7Nov 10Nov 15
20°FOct 27Nov 1Nov 4Nov 7Nov 10Nov 13Nov 16Nov 20Nov 24
16°FNov 2Nov 8Nov 12Nov 16Nov 19Nov 22Nov 25Nov 29Dec 4

Freeze probabilities 1991–2020 at Garden City Exp Stn, KS, from NOAA NCEI U.S. Climate Normals. Where a temperature is reached in fewer than 99.5% of years, the dates describe only the years that reach it. Not a forecast.

Frost risk on any date in 67851 →Compare Holcomb with another place →

Weather by month in Holcomb

July is the warmest month at Garden City Exp Stn, KS, averaging 93°F by day and 65°F at night; January is the coldest at 46°F and 17°F. A freezing night is all but certain in every month from October to April (a 90% chance or more). From June to September the chance of a 32°F night stays under 10% each month. In spring, May still brings one in 39% of years.

Warmth for growing adds up to 3,934 growing degree days a year (base 50°F), fewer than at 72% of the 110 Kansas stations. 35% of them (1,375) have built up by the end of June, and July adds the most, 897. Precipitation totals 19.6 inches a year, most in July (3.2") and least in January (0.5"); May to September bring 67% of it.

Monthly normals 1991–2020 at Garden City Exp Stn, KS
MonthHigh °FLow °FPrecip. in32°F nightNights ≤ 32°FGDD 50°F
Jan46170.5100%311
Feb49200.6100%278
Mar59291.1100%2156
Apr68371.799%9160
May78492.839%1422
Jun89603.10%0729
Jul93653.20%0897
Aug91632.80%0831
Sep84541.38%<1564
Oct71401.394%7227
Nov57270.5100%2238
Dec47180.7100%302

Monthly normals 1991–2020 at Garden City Exp Stn, KS (2,890 ft), NOAA NCEI. "32°F night": chance of at least one in the month. GDD: growing degree days, base 50°F.

Compared with the next station

The nearest other station, Lakin, KS, 16 miles southwest of Holcomb, has a last frost 10 days earlier (April 18), a first frost 6 days later (October 23), a season 16 days longer.

Frost dates for 67860 (Lakin) →

When it snows in Holcomb, Kansas

The first measurable snow (0.1 inch or more) in Holcomb usually arrives around November 29, and the last of the season around March 25. Those are the middle dates across the winters of 1991–2020 at Garden City Exp Stn, KS, 12.9 miles away: half of years saw snow earlier, half later. Every one of those winters saw snow. The last 32°F night of spring typically comes 34 days after the last snow.

Planting calendar for 67851

What to do and when, from the 50% frost dates for Holcomb, Kansas
WhenWhat to do
February 17 – March 3Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out.
March 3 – March 17Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early.
March 31 – April 14Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil.
April 28 onwardTransplant tomatoes, peppers, basil, squash, cucumbersThe average last freeze has passed — still watch the actual forecast.
by July 25Sow the autumn crop of carrots, beets and brassicasThey need about twelve weeks to size up before growth stops.
by October 3Harvest tender crops, or be ready to cover themA first freeze two weeks early is well within normal variation.
October 17 onwardPlant garlic, mulch beds, lift tender bulbsGarlic wants a cold spell; bare soil loses structure over winter.

The weeks before and after the 50% dates are general rules of thumb, not NOAA figures; a seed packet gives the timing for each variety.

Where these figures come from

ZIP 67851 is 13 miles from Garden City Exp Stn, KS, which stands at 2,890 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 1 other ZIP code shares the station; its figures are presented in full for 67846 (Garden City). The 2023 USDA Plant Hardiness Zone Map lists ZIP 67851 in zone 6a, the band where the coldest night of the year averaged -10 to -5°F (-23.3 to -20.6°C) over 1991–2020; a zone describes winter lows, not frost dates.

Frost dates across Kansas →

Hardiness zone and temperature range: USDA Plant Hardiness Zone Map 2023 (USDA-ARS, Oregon State University), ZIP-code listing, unchanged. °C converted from °F by this site.

Thirty-year averages, not a forecast: check the forecast before planting out. How stations are matched and which pages are offered to search engines: methodology.

ZIP codes measured at the same station

Other zone 6a places in Kansas