Frost dates for Neapolis Reservoir & Edu Station, TN
At Neapolis Reservoir & Edu Station, the median last spring frost (32°F) is Apr 5 and the median first fall frost is Oct 29, for a typical growing season of 208 days. For a 90% chance that the last frost has passed, wait until Apr 22. Nearby ZIP codes are in USDA hardiness zone 7b.
- Apr 5Last spring frost (median)50% chance of 32°F after this date
- Apr 22Safer planting date10% chance of 32°F after this date
- Oct 29First fall frost (median)50% chance of 32°F by this date
- 208 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 1 | Apr 17 | May 2 |
| 32°F | Mar 17 | Apr 5 | Apr 22 |
| 28°F | Mar 2 | Mar 22 | Apr 10 |
| 24°F | Feb 16 | Mar 7 | Mar 29 |
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 8 | Oct 20 | Nov 1 |
| 32°F | Oct 16 | Oct 29 | Nov 10 |
| 28°F | Oct 26 | Nov 8 | Nov 29 |
| 24°F | Nov 4 | Nov 21 | Dec 11 |
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 | 163 days | 185 days | 205 days |
| 32°F | 188 days | 208 days | 232 days |
| 28°F | 208 days | 231 days | 258 days |
| 24°F | 231 days | 258 days | 285 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 100% |
Closest ZIP codes (each is closer to another station)
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 37174 | 7b | 5 to 10°F | 6 km |
| 38401 | 7b | 5 to 10°F | 11 km |
| 37179 | 7b | 5 to 10°F | 11 km |
| 38482 | 7b | 5 to 10°F | 18 km |
| 37064 | 7b | 5 to 10°F | 18 km |
| 38487 | 7b | 5 to 10°F | 24 km |
| 37046 | 7b | 5 to 10°F | 25 km |
| 38476 | 7b | 5 to 10°F | 26 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 USC00406435, at 35.7197, -86.9653, elevation 213 m (700 ft).
- Data quality: Representative (10+ years), 23 years of freeze data.
- Average days per year at or below 32°F: 91.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Thompson Station (6 km)
- Columbia 3 WNW (14 km)
- Franklin Sewage Plant (26 km)
- Mount Pleasant 1n (28 km)
- Fairview Bowie Nat Center (32 km)
- Brentwood (34 km)
- Lewisburg Exp. Station (37 km)
- Warner Park (38 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.