Frost dates for Knob Lick 4s, KY
At Knob Lick 4s, the median last spring frost (32°F) is Apr 5 and the median first fall frost is Nov 2, for a typical growing season of 211 days. For a 90% chance that the last frost has passed, wait until Apr 24. Nearby ZIP codes are in USDA hardiness zone 7a.
- Apr 5Last spring frost (median)50% chance of 32°F after this date
- Apr 24Safer planting date10% chance of 32°F after this date
- Nov 2First fall frost (median)50% chance of 32°F by this date
- 211 daysGrowing season (median)between 32°F freezes
Last spring frost dates
The chance that the temperature drops to the threshold after each date.
| Temperature | 90% chance later | 50% chance later | 10% chance later |
|---|---|---|---|
| 36°F | Apr 3 | Apr 18 | May 8 |
| 32°F | Mar 21 | Apr 5 | Apr 24 |
| 28°F | Mar 9 | Mar 25 | Apr 8 |
| 24°F | Feb 24 | Mar 15 | Mar 30 |
First fall frost dates
The chance that the temperature has dropped to the threshold by each date.
| Temperature | 10% chance by | 50% chance by | 90% chance by |
|---|---|---|---|
| 36°F | Oct 12 | Oct 24 | Nov 4 |
| 32°F | Oct 21 | Nov 2 | Nov 18 |
| 28°F | Nov 1 | Nov 14 | Dec 2 |
| 24°F | Nov 8 | Nov 26 | Dec 15 |
Growing season length
Days between the last spring and first fall freeze, as the length reached in 9, 5 and 1 out of 10 years.
| Temperature | 9 in 10 years at least | 5 in 10 years at least | 1 in 10 years at least |
|---|---|---|---|
| 36°F | 165 days | 186 days | 206 days |
| 32°F | 187 days | 211 days | 231 days |
| 28°F | 212 days | 233 days | 254 days |
| 24°F | 232 days | 254 days | 281 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 100% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 42154 | 7a | 0 to 5°F | 3 km |
| 42129 | 7a | 0 to 5°F | 11 km |
| 42214 | 7a | 0 to 5°F | 11 km |
Not the official USDA Plant Hardiness Zone Map. Zones shown here are the values published in the USDA-ARS / Oregon State University PRISM Group 2023 ZIP code tables, shown unaltered. For the official interactive map, visit planthardiness.ars.usda.gov.
About this station
- NOAA station ID USC00154449, at 37.0244, -85.6986, elevation 311 m (1,020 ft).
- Data quality: Estimated from nearby stations (2+ years), 9 years of freeze data.
- Average days per year at or below 32°F: 81.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Summer Shade (15 km)
- Glasgow (19 km)
- Greensburg (31 km)
- Barren River Lake (40 km)
- Mammoth Cave (42 km)
- Millerstown 4e (53 km)
- Bowling Green 21 NNE (54 km)
- Scottsville (56 km)
Sources
- NOAA National Centers for Environmental Information, U.S. Climate Normals 1991–2020, annual/seasonal normals by station (version 1.0.1), file dated June 27, 2023; documentation.
- USDA Agricultural Research Service and PRISM Group, Oregon State University, 2023 Plant Hardiness Zone Map ZIP code tables (CONUS, Alaska, Hawaii, Puerto Rico), files dated November 17, 2023. Data © PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed November 1, 2026. Official map: planthardiness.ars.usda.gov.
- U.S. Census Bureau, 2024 Gazetteer ZIP Code Tabulation Areas file, dated August 30, 2024 (ZIP centroids used to find the nearest station).
Freeze dates are 30-year probabilities, not forecasts. Check your local forecast before planting tender plants.