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USDA Hardiness Zone 7a

Frost Dates for 41701 — Hazard, Kentucky

NOAA 1991–2020 normals from Buckhorn Lake, KY (780 ft), 16 miles west.

Updated

In Hazard, the last spring frost (32°F) is around April 19 in half of years and has passed by May 2 in nine years out of ten. The first fall frost comes around October 25, as early as October 12 one year in ten, leaving a typical freeze-free season of 188 days (NOAA, Buckhorn Lake, KY).

Last spring frost
April 19

50% probability

First fall frost
October 25

50% probability

Growing season
188 days

freeze-free, 50%

Hardiness zone
7a

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

First snow
January 4

median, 1991–2020

Last snow
February 10

median, 1991–2020

Winters with snow
86%

24 of 28 observed

Snow per year
8.8"

NOAA normal

Frost risk by date in Hazard

Half of springs at Buckhorn Lake, KY see their last 32°F night by April 19; only one in ten is past it by April 8, and one in ten still has one after May 2. Planting tender crops after April 24 leaves a 30% risk of a frost on them, after April 28 20%, and after May 2 10%. The 13 days between the even-odds date and the one-in-ten date is the narrowest of the 113 Kentucky stations behind this site's ZIP pages.

In fall the first 32°F night comes by October 25 in half of years, as early as October 12 one year in ten, and holds off past November 7 one year in ten. A hard freeze of 28°F follows 9 days later, around November 3; in spring the one-in-ten date for 28°F is April 22, 10 days before the 32°F one. The freeze-free season lasts 188 days in a typical year, shorter than at 67% of the 113 Kentucky stations; it reaches 204 days one year in ten and falls short of 170 one year in ten. On average 103 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 April 29, and return around October 16. Severe cold of 16°F or below comes every winter, usually between December 9 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 17Apr 20Apr 23Apr 26Apr 29May 1May 3May 8May 12
32°FApr 8Apr 12Apr 15Apr 17Apr 19Apr 21Apr 24Apr 28May 2
28°FMar 27Apr 1Apr 4Apr 6Apr 9Apr 12Apr 15Apr 18Apr 22
24°FMar 13Mar 19Mar 24Mar 28Mar 31Apr 2Apr 4Apr 7Apr 12
20°FFeb 24Mar 4Mar 10Mar 15Mar 18Mar 22Mar 26Mar 30Apr 2
16°FFeb 7Feb 16Feb 23Feb 28Mar 5Mar 9Mar 14Mar 18Mar 24
Fall: the chance the first night this cold has come by the date
Low10%20%30%40%50%60%70%80%90%
36°FOct 5Oct 9Oct 12Oct 14Oct 16Oct 19Oct 22Oct 25Oct 29
32°FOct 12Oct 17Oct 20Oct 22Oct 25Oct 28Oct 31Nov 2Nov 7
28°FOct 20Oct 25Oct 29Nov 1Nov 3Nov 5Nov 9Nov 12Nov 18
24°FOct 31Nov 4Nov 7Nov 10Nov 14Nov 17Nov 21Nov 26Dec 1
20°FNov 9Nov 14Nov 19Nov 23Nov 27Dec 1Dec 4Dec 8Dec 17
16°FNov 17Nov 25Dec 1Dec 4Dec 9Dec 14Dec 20Dec 25Jan 2

Freeze probabilities 1991–2020 at Buckhorn Lake, KY, 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 41701 →Compare Hazard with another place →

Weather by month in Hazard

July is the warmest month at Buckhorn Lake, KY, averaging 87°F by day and 65°F at night; January is the coldest at 44°F and 25°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 12% of years.

Warmth for growing adds up to 3,922 growing degree days a year (base 50°F), fewer than at 54% of the 113 Kentucky stations. 37% of them (1,451) have built up by the end of June, and July adds the most, 806. Precipitation totals 51.5 inches a year, most in July (5.3") and least in September (3.3"); May to September bring 45% of it.

Monthly normals 1991–2020 at Buckhorn Lake, KY
MonthHigh °FLow °FPrecip. in32°F nightNights ≤ 32°FGDD 50°F
Jan44254.0100%247
Feb49273.9100%2113
Mar59324.8100%1672
Apr70414.598%6222
May78525.012%<1466
Jun84615.00%0672
Jul87655.30%0806
Aug85644.40%0766
Sep80583.30%0570
Oct70453.371%1259
Nov58343.3100%1657
Dec49284.7100%1914

Monthly normals 1991–2020 at Buckhorn Lake, KY (780 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, Skyline 1 SE, KY, 17 miles southeast of Hazard and 303 feet higher, has a last frost 1 day earlier (April 18), a first frost 3 days later (October 28), a season 3 days longer.

Frost dates for 40823 (Cumberland) →

When it snows in Hazard, Kentucky

The first measurable snow (0.1 inch or more) in Hazard usually arrives around January 4, and the last of the season around February 10. Those are the middle dates across the winters of 1991–2020 at Hazard Wtr Wks, KY, 2 miles away: half of years saw snow earlier, half later. Snow fell in 86% of those winters. The last 32°F night of spring typically comes 68 days after the last snow.

Planting calendar for 41701

What to do and when, from the 50% frost dates for Hazard, Kentucky
WhenWhat to do
February 8 – February 22Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out.
February 22 – March 8Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early.
March 22 – April 5Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil.
April 19 onwardTransplant tomatoes, peppers, basil, squash, cucumbersThe average last freeze has passed — still watch the actual forecast.
by August 2Sow the autumn crop of carrots, beets and brassicasThey need about twelve weeks to size up before growth stops.
by October 11Harvest tender crops, or be ready to cover themA first freeze two weeks early is well within normal variation.
October 25 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 41701 is 16 miles from Buckhorn Lake, KY, which stands at 780 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 41701 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.

Other zone 7a places in Kentucky