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
- First fall frost
- October 25
- Growing season
- 188 days
- Hardiness zone
- 7a
50% probability
50% probability
freeze-free, 50%
0 to 5°F (-17.8 to -15.0°C) coldest night
- First snow
- January 4
- Last snow
- February 10
- Winters with snow
- 86%
- Snow per year
- 8.8"
median, 1991–2020
median, 1991–2020
24 of 28 observed
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.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Apr 17 | Apr 20 | Apr 23 | Apr 26 | Apr 29 | May 1 | May 3 | May 8 | May 12 |
| 32°F | Apr 8 | Apr 12 | Apr 15 | Apr 17 | Apr 19 | Apr 21 | Apr 24 | Apr 28 | May 2 |
| 28°F | Mar 27 | Apr 1 | Apr 4 | Apr 6 | Apr 9 | Apr 12 | Apr 15 | Apr 18 | Apr 22 |
| 24°F | Mar 13 | Mar 19 | Mar 24 | Mar 28 | Mar 31 | Apr 2 | Apr 4 | Apr 7 | Apr 12 |
| 20°F | Feb 24 | Mar 4 | Mar 10 | Mar 15 | Mar 18 | Mar 22 | Mar 26 | Mar 30 | Apr 2 |
| 16°F | Feb 7 | Feb 16 | Feb 23 | Feb 28 | Mar 5 | Mar 9 | Mar 14 | Mar 18 | Mar 24 |
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 5 | Oct 9 | Oct 12 | Oct 14 | Oct 16 | Oct 19 | Oct 22 | Oct 25 | Oct 29 |
| 32°F | Oct 12 | Oct 17 | Oct 20 | Oct 22 | Oct 25 | Oct 28 | Oct 31 | Nov 2 | Nov 7 |
| 28°F | Oct 20 | Oct 25 | Oct 29 | Nov 1 | Nov 3 | Nov 5 | Nov 9 | Nov 12 | Nov 18 |
| 24°F | Oct 31 | Nov 4 | Nov 7 | Nov 10 | Nov 14 | Nov 17 | Nov 21 | Nov 26 | Dec 1 |
| 20°F | Nov 9 | Nov 14 | Nov 19 | Nov 23 | Nov 27 | Dec 1 | Dec 4 | Dec 8 | Dec 17 |
| 16°F | Nov 17 | Nov 25 | Dec 1 | Dec 4 | Dec 9 | Dec 14 | Dec 20 | Dec 25 | Jan 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.
| Month | High °F | Low °F | Precip. in | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|---|
| Jan | 44 | 25 | 4.0 | 100% | 24 | 7 |
| Feb | 49 | 27 | 3.9 | 100% | 21 | 13 |
| Mar | 59 | 32 | 4.8 | 100% | 16 | 72 |
| Apr | 70 | 41 | 4.5 | 98% | 6 | 222 |
| May | 78 | 52 | 5.0 | 12% | <1 | 466 |
| Jun | 84 | 61 | 5.0 | 0% | 0 | 672 |
| Jul | 87 | 65 | 5.3 | 0% | 0 | 806 |
| Aug | 85 | 64 | 4.4 | 0% | 0 | 766 |
| Sep | 80 | 58 | 3.3 | 0% | 0 | 570 |
| Oct | 70 | 45 | 3.3 | 71% | 1 | 259 |
| Nov | 58 | 34 | 3.3 | 100% | 16 | 57 |
| Dec | 49 | 28 | 4.7 | 100% | 19 | 14 |
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.
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
| When | What to do |
|---|---|
| February 8 – February 22 | Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out. |
| February 22 – March 8 | Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early. |
| March 22 – April 5 | Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil. |
| April 19 onward | Transplant tomatoes, peppers, basil, squash, cucumbersThe average last freeze has passed — still watch the actual forecast. |
| by August 2 | Sow the autumn crop of carrots, beets and brassicasThey need about twelve weeks to size up before growth stops. |
| by October 11 | Harvest tender crops, or be ready to cover themA first freeze two weeks early is well within normal variation. |
| October 25 onward | Plant 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.
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.