Frost dates for Jamestown Wastewater Plant, KY
At Jamestown Wastewater Plant, the median last spring frost (32°F) is Apr 18 and the median first fall frost is Oct 24, for a typical growing season of 189 days. For a 90% chance that the last frost has passed, wait until May 3. Nearby ZIP codes are in USDA hardiness zone 7a.
- Apr 18Last spring frost (median)50% chance of 32°F after this date
- May 3Safer planting date10% chance of 32°F after this date
- Oct 24First fall frost (median)50% chance of 32°F by this date
- 189 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 14 | Apr 28 | May 12 |
| 32°F | Apr 2 | Apr 18 | May 3 |
| 28°F | Mar 20 | Apr 6 | Apr 25 |
| 24°F | Mar 5 | Mar 27 | Apr 14 |
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 2 | Oct 15 | Oct 27 |
| 32°F | Oct 11 | Oct 24 | Nov 5 |
| 28°F | Oct 21 | Nov 2 | Nov 15 |
| 24°F | Oct 31 | Nov 11 | Nov 30 |
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 | 150 days | 169 days | 189 days |
| 32°F | 169 days | 189 days | 208 days |
| 28°F | 189 days | 210 days | 231 days |
| 24°F | 208 days | 232 days | 257 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 |
|---|---|---|---|
| 42642 | 7a | 0 to 5°F | 6 km |
| 42629 | 7a | 0 to 5°F | 12 km |
| 42741 | 7a | 0 to 5°F | 18 km |
| 42528 | 7a | 0 to 5°F | 20 km |
| 42565 | 7a | 0 to 5°F | 20 km |
| 42728 | 7a | 0 to 5°F | 24 km |
| 42753 | 7a | 0 to 5°F | 27 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 USC00154208, at 37.0056, -85.0617, elevation 271 m (890 ft).
- Data quality: Representative (10+ years), 16 years of freeze data.
- Average days per year at or below 32°F: 111.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Monticello 3 NE (26 km)
- Somerset 2 N (41 km)
- Greensburg (48 km)
- Bradfordsville (55 km)
- Knob Lick 4s (57 km)
- Summer Shade (59 km)
- Stearns 2s (64 km)
- Mount Vernon (75 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.