Frost dates for Shelbyville 1 E, KY
At Shelbyville 1 E, the median last spring frost (32°F) is May 1 and the median first fall frost is Oct 10, for a typical growing season of 161 days. For a 90% chance that the last frost has passed, wait until May 15. Nearby ZIP codes are in USDA hardiness zones 6b to 7a.
- May 1Last spring frost (median)50% chance of 32°F after this date
- May 15Safer planting date10% chance of 32°F after this date
- Oct 10First fall frost (median)50% chance of 32°F by this date
- 161 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 28 | May 9 | May 25 |
| 32°F | Apr 19 | May 1 | May 15 |
| 28°F | Apr 10 | Apr 24 | May 7 |
| 24°F | Mar 30 | Apr 13 | Apr 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 | Sep 15 | Oct 1 | Oct 14 |
| 32°F | Sep 24 | Oct 10 | Oct 25 |
| 28°F | Oct 4 | Oct 21 | Nov 4 |
| 24°F | Oct 16 | Nov 1 | Nov 12 |
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 | 122 days | 143 days | 162 days |
| 32°F | 142 days | 161 days | 181 days |
| 28°F | 160 days | 179 days | 199 days |
| 24°F | 180 days | 199 days | 220 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 |
|---|---|---|---|
| 40065 | 6b | -5 to 0°F | 2 km |
| 40022 | 6b | -5 to 0°F | 14 km |
| 40076 | 6b | -5 to 0°F | 14 km |
| 40067 | 6b | -5 to 0°F | 15 km |
| 40019 | 6b | -5 to 0°F | 19 km |
| 40023 | 7a | 0 to 5°F | 20 km |
| 40057 | 6b | -5 to 0°F | 24 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 USC00157324, at 38.2000, -85.2000, elevation 222 m (730 ft).
- Data quality: Representative (10+ years), 11 years of freeze data.
- Average days per year at or below 32°F: 139.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Taylorsville Lake (24 km)
- Frankfort Capital City Airport (26 km)
- Crestwood 4ne (26 km)
- Louisville WFO (40 km)
- Louisville Bowman Field (41 km)
- Versailles 3 NNW (41 km)
- Bardstown 5e (45 km)
- Louisville Intl Airport (47 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.