USDA Hardiness Zone 6b
Frost Dates for 41164 — Olive Hill, Kentucky
NOAA 1991–2020 normals from Olive Hill 5NE, KY (888 ft), 6 miles northeast.
Updated
In Olive Hill, the last spring frost (32°F) is around April 24 in half of years and has passed by May 12 in nine years out of ten. The first fall frost comes around October 18, as early as October 6 one year in ten, leaving a typical freeze-free season of 174 days (NOAA, Olive Hill 5NE, KY).
- Last spring frost
- April 24
- First fall frost
- October 18
- Growing season
- 174 days
- Hardiness zone
- 6b
50% probability
50% probability
freeze-free, 50%
-5 to 0°F (-20.6 to -17.8°C) coldest night
- First snow
- December 4
- Last snow
- March 4
- Winters with snow
- 100%
- Snow per year
- 17.5"
median, 1991–2020
median, 1991–2020
16 of 16 observed
NOAA normal
Frost risk by date in Olive Hill
Half of springs at Olive Hill 5NE, KY see their last 32°F night by April 24; only one in ten is past it by April 13, and one in ten still has one after May 12. Planting tender crops after May 2 leaves a 30% risk of a frost on them, after May 6 20%, and after May 12 10%. The 18 days between the even-odds date and the one-in-ten date is wider than at 54% of the 113 Kentucky stations behind this site's ZIP pages.
In fall the first 32°F night comes by October 18 in half of years, as early as October 6 one year in ten, and holds off past October 30 one year in ten. A hard freeze of 28°F follows 9 days later, around October 27; in spring the one-in-ten date for 28°F is May 1, 11 days before the 32°F one. The freeze-free season lasts 174 days in a typical year, shorter than at 92% of the 113 Kentucky stations; it reaches 192 days one year in ten and falls short of 154 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 11 days longer, to about May 5, and return around October 9. Severe cold of 16°F or below comes every winter, usually between November 30 and March 7.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Apr 22 | Apr 26 | Apr 30 | May 2 | May 5 | May 8 | May 11 | May 15 | May 19 |
| 32°F | Apr 13 | Apr 17 | Apr 20 | Apr 22 | Apr 24 | Apr 29 | May 2 | May 6 | May 12 |
| 28°F | Apr 1 | Apr 5 | Apr 8 | Apr 11 | Apr 14 | Apr 17 | Apr 19 | Apr 23 | May 1 |
| 24°F | Mar 17 | Mar 22 | Mar 27 | Mar 30 | Apr 1 | Apr 3 | Apr 6 | Apr 9 | Apr 15 |
| 20°F | Mar 2 | Mar 9 | Mar 13 | Mar 17 | Mar 20 | Mar 24 | Mar 27 | Mar 30 | Apr 2 |
| 16°F | Feb 13 | Feb 22 | Feb 28 | Mar 4 | Mar 7 | Mar 11 | Mar 16 | Mar 20 | Mar 24 |
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Sep 29 | Oct 2 | Oct 5 | Oct 7 | Oct 9 | Oct 11 | Oct 14 | Oct 16 | Oct 20 |
| 32°F | Oct 6 | Oct 10 | Oct 13 | Oct 15 | Oct 18 | Oct 20 | Oct 22 | Oct 25 | Oct 30 |
| 28°F | Oct 14 | Oct 18 | Oct 21 | Oct 24 | Oct 27 | Oct 30 | Nov 1 | Nov 4 | Nov 8 |
| 24°F | Oct 24 | Oct 29 | Nov 1 | Nov 3 | Nov 6 | Nov 8 | Nov 11 | Nov 15 | Nov 22 |
| 20°F | Nov 3 | Nov 7 | Nov 11 | Nov 14 | Nov 17 | Nov 20 | Nov 25 | Dec 1 | Dec 5 |
| 16°F | Nov 11 | Nov 16 | Nov 22 | Nov 26 | Nov 30 | Dec 3 | Dec 8 | Dec 16 | Dec 24 |
Freeze probabilities 1991–2020 at Olive Hill 5NE, 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 41164 →Compare Olive Hill with another place →
Weather by month in Olive Hill
July is the warmest month at Olive Hill 5NE, KY, averaging 82°F by day and 63°F at night; January is the coldest at 40°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 3,154 growing degree days a year (base 50°F), fewer than at 99% of the 113 Kentucky stations. 37% of them (1,165) have built up by the end of June, and July adds the most, 696. Precipitation totals 50.0 inches a year, most in July (6.1") and least in November (3.0"); May to September bring 48% of it.
| Month | High °F | Low °F | Precip. in | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|---|
| Jan | 40 | 21 | 3.4 | 100% | 27 | 5 |
| Feb | 45 | 23 | 3.3 | 100% | 24 | 11 |
| Mar | 54 | 29 | 4.9 | 100% | 21 | 45 |
| Apr | 66 | 38 | 4.4 | 99% | 10 | 156 |
| May | 74 | 50 | 4.9 | 34% | 1 | 378 |
| Jun | 79 | 59 | 5.1 | 0% | 0 | 570 |
| Jul | 82 | 63 | 6.1 | 0% | 0 | 696 |
| Aug | 82 | 60 | 4.1 | 0% | 0 | 651 |
| Sep | 76 | 54 | 3.7 | 1% | 0 | 443 |
| Oct | 66 | 41 | 3.1 | 92% | 6 | 162 |
| Nov | 54 | 30 | 3.0 | 100% | 21 | 31 |
| Dec | 44 | 26 | 4.0 | 100% | 24 | 8 |
Monthly normals 1991–2020 at Olive Hill 5NE, KY (888 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, Gimlet 9N, KY, 6 miles southeast of Olive Hill and 232 feet higher, has a last frost 14 days earlier (April 10), a first frost 13 days later (October 31), a season 27 days longer.
When it snows in Olive Hill, Kentucky
The first measurable snow (0.1 inch or more) in Olive Hill usually arrives around December 4, and the last of the season around March 4. Those are the middle dates across the winters of 1991–2020 at Olive Hill 5NE, KY, 5.5 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 51 days after the last snow.
Planting calendar for 41164
| When | What to do |
|---|---|
| February 13 – February 27 | Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out. |
| February 27 – March 13 | Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early. |
| March 27 – April 10 | Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil. |
| April 24 onward | Transplant tomatoes, peppers, basil, squash, cucumbersThe average last freeze has passed — still watch the actual forecast. |
| by July 26 | Sow the autumn crop of carrots, beets and brassicasThey need about twelve weeks to size up before growth stops. |
| by October 4 | Harvest tender crops, or be ready to cover themA first freeze two weeks early is well within normal variation. |
| October 18 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 41164 is 6 miles from Olive Hill 5NE, KY, which stands at 888 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 41164 in zone 6b, the band where the coldest night of the year averaged -5 to 0°F (-20.6 to -17.8°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.