USDA Hardiness Zone 7a
Frost Dates for 42754 — Leitchfield, Kentucky
NOAA 1991–2020 normals from Leitchfield 2 N, KY (620 ft), 2 miles northeast.
Updated
In Leitchfield, the last spring frost (32°F) is around April 26 in half of years and has passed by May 11 in nine years out of ten. The first fall frost comes around October 15, as early as October 4 one year in ten, leaving a typical freeze-free season of 172 days (NOAA, Leitchfield 2 N, KY).
- Last spring frost
- April 26
- First fall frost
- October 15
- Growing season
- 172 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
- December 24
- Last snow
- March 2
- Winters with snow
- 100%
- Snow per year
- 9.4"
median, 1991–2020
median, 1991–2020
19 of 19 observed
NOAA normal
Frost risk by date in Leitchfield
Half of springs at Leitchfield 2 N, KY see their last 32°F night by April 26; only one in ten is past it by April 11, and one in ten still has one after May 11. Planting tender crops after May 2 leaves a 30% risk of a frost on them, after May 5 20%, and after May 11 10%. The 15 days between the even-odds date and the one-in-ten date is narrower than at 85% of the 113 Kentucky stations behind this site's ZIP pages.
In fall the first 32°F night comes by October 15 in half of years, as early as October 4 one year in ten, and holds off past October 26 one year in ten. A hard freeze of 28°F follows 9 days later, around October 24; in spring the one-in-ten date for 28°F is April 30, 11 days before the 32°F one. The freeze-free season lasts 172 days in a typical year, shorter than at 95% of the 113 Kentucky stations; it reaches 191 days one year in ten and falls short of 153 one year in ten. On average 110 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 4, and return around October 6. Severe cold of 16°F or below comes every winter, usually between November 26 and March 11.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Apr 21 | Apr 25 | Apr 29 | May 1 | May 4 | May 7 | May 10 | May 14 | May 19 |
| 32°F | Apr 11 | Apr 15 | Apr 18 | Apr 22 | Apr 26 | Apr 29 | May 2 | May 5 | May 11 |
| 28°F | Mar 30 | Apr 5 | Apr 9 | Apr 11 | Apr 14 | Apr 16 | Apr 19 | Apr 24 | Apr 30 |
| 24°F | Mar 19 | Mar 24 | Mar 29 | Mar 31 | Apr 2 | Apr 6 | Apr 9 | Apr 12 | Apr 17 |
| 20°F | Mar 4 | Mar 11 | Mar 17 | Mar 20 | Mar 24 | Mar 28 | Mar 31 | Apr 3 | Apr 8 |
| 16°F | Feb 21 | Feb 27 | Mar 2 | Mar 6 | Mar 11 | Mar 16 | Mar 19 | Mar 23 | Mar 29 |
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Sep 25 | Sep 30 | Oct 2 | Oct 4 | Oct 6 | Oct 8 | Oct 10 | Oct 13 | Oct 17 |
| 32°F | Oct 4 | Oct 7 | Oct 10 | Oct 12 | Oct 15 | Oct 17 | Oct 20 | Oct 22 | Oct 26 |
| 28°F | Oct 11 | Oct 16 | Oct 19 | Oct 22 | Oct 24 | Oct 27 | Oct 30 | Nov 1 | Nov 5 |
| 24°F | Oct 21 | Oct 25 | Oct 30 | Nov 1 | Nov 3 | Nov 5 | Nov 9 | Nov 13 | Nov 18 |
| 20°F | Nov 1 | Nov 4 | Nov 7 | Nov 11 | Nov 13 | Nov 16 | Nov 20 | Nov 25 | Dec 1 |
| 16°F | Nov 8 | Nov 13 | Nov 17 | Nov 21 | Nov 26 | Nov 30 | Dec 3 | Dec 7 | Dec 14 |
Freeze probabilities 1991–2020 at Leitchfield 2 N, 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 42754 →Compare Leitchfield with another place →
Weather by month in Leitchfield
July is the warmest month at Leitchfield 2 N, KY, averaging 86°F by day and 64°F at night; January is the coldest at 42°F and 21°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 34% of years.
Warmth for growing adds up to 3,561 growing degree days a year (base 50°F), fewer than at 89% of the 113 Kentucky stations. 37% of them (1,304) have built up by the end of June, and July adds the most, 759. Precipitation totals 49.8 inches a year, most in May (4.9") and least in September (3.3"); May to September bring 42% of it.
| Month | High °F | Low °F | Precip. in | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|---|
| Jan | 42 | 21 | 3.5 | 100% | 24 | 7 |
| Feb | 47 | 22 | 4.1 | 100% | 22 | 11 |
| Mar | 56 | 31 | 4.7 | 100% | 16 | 52 |
| Apr | 67 | 41 | 4.6 | 99% | 6 | 187 |
| May | 75 | 51 | 4.9 | 34% | <1 | 411 |
| Jun | 83 | 60 | 4.3 | 0% | 0 | 636 |
| Jul | 86 | 64 | 4.2 | 0% | 0 | 759 |
| Aug | 85 | 61 | 4.1 | 0% | 0 | 719 |
| Sep | 80 | 54 | 3.3 | 6% | <1 | 514 |
| Oct | 69 | 42 | 4.0 | 97% | 5 | 205 |
| Nov | 56 | 32 | 3.4 | 100% | 16 | 51 |
| Dec | 46 | 24 | 4.7 | 100% | 22 | 9 |
Monthly normals 1991–2020 at Leitchfield 2 N, KY (620 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, Mcdaniels, KY, 14 miles northwest of Leitchfield and 195 feet lower, has a last frost 15 days earlier (April 11), a first frost 11 days later (October 26), a season 24 days longer.
When it snows in Leitchfield, Kentucky
The first measurable snow (0.1 inch or more) in Leitchfield usually arrives around December 24, and the last of the season around March 2. Those are the middle dates across the winters of 1991–2020 at Leitchfield 2 N, KY, 2.4 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 55 days after the last snow.
Planting calendar for 42754
| When | What to do |
|---|---|
| February 15 – March 1 | Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out. |
| March 1 – March 15 | Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early. |
| March 29 – April 12 | Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil. |
| April 26 onward | Transplant tomatoes, peppers, basil, squash, cucumbersThe average last freeze has passed — still watch the actual forecast. |
| by July 23 | Sow the autumn crop of carrots, beets and brassicasThey need about twelve weeks to size up before growth stops. |
| by October 1 | Harvest tender crops, or be ready to cover themA first freeze two weeks early is well within normal variation. |
| October 15 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 42754 is 2 miles from Leitchfield 2 N, KY, which stands at 620 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 1 other ZIP code shares the station. The 2023 USDA Plant Hardiness Zone Map lists ZIP 42754 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.