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USDA Hardiness Zone 7a

Frost Dates for 41537 — Jenkins, Kentucky

NOAA 1991–2020 normals from Clintwood 1W, VA (1,566 ft), 8 miles southeast.

Updated

In Jenkins, the last spring frost (32°F) is around April 29 in half of years and has passed by May 15 in nine years out of ten. The first fall frost comes around October 16, as early as October 4 one year in ten, leaving a typical freeze-free season of 169 days (NOAA, Clintwood 1W, VA).

Last spring frost
April 29

50% probability

First fall frost
October 16

50% probability

Growing season
169 days

freeze-free, 50%

Hardiness zone
7a

0 to 5°F (-17.8 to -15.0°C) coldest night

First snow
November 18

median, 1991–2020

Last snow
March 28

median, 1991–2020

Winters with snow
100%

27 of 27 observed

Snow per year
38.4"

NOAA normal

Frost risk by date in Jenkins

Half of springs at Clintwood 1W, VA see their last 32°F night by April 29; only one in ten is past it by April 15, and one in ten still has one after May 15. Planting tender crops after May 5 leaves a 30% risk of a frost on them, after May 9 20%, and after May 15 10%. The 16 days between the even-odds date and the one-in-ten date is narrower than at 68% of the 113 Kentucky stations behind this site's ZIP pages.

In fall the first 32°F night comes by October 16 in half of years, as early as October 4 one year in ten, and holds off past November 1 one year in ten. A hard freeze of 28°F follows 10 days later, around October 26; in spring the one-in-ten date for 28°F is May 3, 12 days before the 32°F one. The freeze-free season lasts 169 days in a typical year, shorter than at 98% of the 113 Kentucky stations; it reaches 190 days one year in ten and falls short of 149 one year in ten. On average 133 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 10 days longer, to about May 9, and return around October 8. Severe cold of 16°F or below comes every winter, usually between December 1 and March 5.

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

Freeze probabilities 1991–2020 at Clintwood 1W, VA, 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 41537 →Compare Jenkins with another place →

Weather by month in Jenkins

July is the warmest month at Clintwood 1W, VA, averaging 82°F by day and 61°F at night; January is the coldest at 43°F and 22°F. A freezing night is all but certain in every month from November 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 41% of years.

Warmth for growing adds up to 3,007 growing degree days a year (base 50°F), the fewest of the 113 Kentucky stations. 36% of them (1,087) have built up by the end of June, and July adds the most, 659. Precipitation totals 49.2 inches a year, most in July (5.3") and least in October (2.8"); May to September bring 46% of it.

Monthly normals 1991–2020 at Clintwood 1W, VA
MonthHigh °FLow °FPrecip. in32°F nightNights ≤ 32°FGDD 50°F
Jan43223.7100%266
Feb47243.9100%238
Mar56294.4100%2140
Apr68384.699%10154
May74484.941%1349
Jun80565.10%0531
Jul82615.30%0659
Aug81604.10%0629
Sep76533.34%<1432
Oct66402.890%7162
Nov55302.8100%2029
Dec46254.3100%259

Monthly normals 1991–2020 at Clintwood 1W, VA (1,566 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, Whitesburg 2SE, KY, 12 miles southwest of Jenkins and 326 feet lower, has a last frost 8 days earlier (April 21), a first frost 6 days later (October 22), a season 14 days longer.

Frost dates for 41858 (Whitesburg) →

When it snows in Jenkins, Kentucky

The first measurable snow (0.1 inch or more) in Jenkins usually arrives around November 18, and the last of the season around March 28. Those are the middle dates across the winters of 1991–2020 at Clintwood 1W, VA, 8 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 32 days after the last snow.

Planting calendar for 41537

What to do and when, from the 50% frost dates for Jenkins, Kentucky
WhenWhat to do
February 18 – March 4Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out.
March 4 – March 18Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early.
April 1 – April 15Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil.
April 29 onwardTransplant tomatoes, peppers, basil, squash, cucumbersThe average last freeze has passed — still watch the actual forecast.
by July 24Sow the autumn crop of carrots, beets and brassicasThey need about twelve weeks to size up before growth stops.
by October 2Harvest tender crops, or be ready to cover themA first freeze two weeks early is well within normal variation.
October 16 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 41537 is 8 miles from Clintwood 1W, VA, which stands at 1,566 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 3 other ZIP codes share the station; its figures are presented in full for 24228 (Clintwood). The 2023 USDA Plant Hardiness Zone Map lists ZIP 41537 in zone 7a, the band where the coldest night of the year averaged 0 to 5°F (-17.8 to -15.0°C) over 1991–2020; a zone describes winter lows, not frost dates.

Frost dates across Kentucky →

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 7a places in Kentucky