Frost dates for Millerstown 4e, KY
At Millerstown 4e, the median last spring frost (32°F) is Apr 21 and the median first fall frost is Oct 18, for a typical growing season of 178 days. For a 90% chance that the last frost has passed, wait until May 6. Nearby ZIP codes are in USDA hardiness zone 7a.
- Apr 21Last spring frost (median)50% chance of 32°F after this date
- May 6Safer planting date10% chance of 32°F after this date
- Oct 18First fall frost (median)50% chance of 32°F by this date
- 178 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 17 | May 1 | May 14 |
| 32°F | Apr 8 | Apr 21 | May 6 |
| 28°F | Mar 28 | Apr 10 | Apr 26 |
| 24°F | Mar 13 | Mar 31 | Apr 13 |
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 1 | Oct 10 | Oct 20 |
| 32°F | Oct 6 | Oct 18 | Oct 28 |
| 28°F | Oct 14 | Oct 26 | Nov 6 |
| 24°F | Oct 23 | Nov 4 | Nov 21 |
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 | 144 days | 160 days | 177 days |
| 32°F | 160 days | 178 days | 196 days |
| 28°F | 179 days | 198 days | 218 days |
| 24°F | 199 days | 220 days | 242 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 |
|---|---|---|---|
| 42784 | 7a | 0 to 5°F | 7 km |
| 42788 | 7a | 0 to 5°F | 11 km |
| 42776 | 7a | 0 to 5°F | 12 km |
| 42726 | 7a | 0 to 5°F | 13 km |
| 42713 | 7a | 0 to 5°F | 14 km |
| 42765 | 7a | 0 to 5°F | 16 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 USC00155444, at 37.4336, -86.0089, elevation 183 m (600 ft).
- Data quality: Estimated from nearby stations (2+ years), 9 years of freeze data.
- Average days per year at or below 32°F: 113.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Leitchfield 2 N (26 km)
- Hodgenville Lincoln P (27 km)
- Nolin River Lake (27 km)
- Bowling Green 21 NNE (28 km)
- Elizabethtown Wp Cs (30 km)
- Mammoth Cave (36 km)
- McDaniels (44 km)
- Corners (45 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.