Frost dates for Old Hickory Dam, TN
At Old Hickory Dam, the median last spring frost (32°F) is Apr 11 and the median first fall frost is Oct 29, for a typical growing season of 200 days. For a 90% chance that the last frost has passed, wait until Apr 26. Nearby ZIP codes are in USDA hardiness zone 7b.
- Apr 11Last spring frost (median)50% chance of 32°F after this date
- Apr 26Safer planting date10% chance of 32°F after this date
- Oct 29First fall frost (median)50% chance of 32°F by this date
- 200 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 9 | Apr 24 | May 8 |
| 32°F | Mar 26 | Apr 11 | Apr 26 |
| 28°F | Mar 13 | Mar 31 | Apr 14 |
| 24°F | Feb 27 | Mar 18 | Apr 3 |
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 10 | Oct 21 | Oct 30 |
| 32°F | Oct 18 | Oct 29 | Nov 9 |
| 28°F | Oct 27 | Nov 6 | Nov 21 |
| 24°F | Nov 4 | Nov 16 | Dec 2 |
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 | 162 days | 179 days | 199 days |
| 32°F | 182 days | 200 days | 220 days |
| 28°F | 201 days | 221 days | 243 days |
| 24°F | 223 days | 245 days | 269 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 |
|---|---|---|---|
| 37115 | 7b | 5 to 10°F | 6 km |
| 37075 | 7b | 5 to 10°F | 7 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 USC00406803, at 36.2953, -86.6569, elevation 140 m (460 ft).
- Data quality: Representative (10+ years), 10 years of freeze data.
- Average days per year at or below 32°F: 86.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Old Hickory WFO (10 km)
- Shelby Bottoms Nature (16 km)
- Goodlettsville 7wnw (16 km)
- White House (17 km)
- Nashville Intl Airport (20 km)
- Nashville Berry Field (20 km)
- Springfield Exp. Station (26 km)
- Lebanon (31 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.