Frost dates for Lewisburg Exp. Station, TN
At Lewisburg Exp. Station, the median last spring frost (32°F) is Apr 14 and the median first fall frost is Oct 22, for a typical growing season of 192 days. For a 90% chance that the last frost has passed, wait until Apr 30. Nearby ZIP codes are in USDA hardiness zone 7b.
- Apr 14Last spring frost (median)50% chance of 32°F after this date
- Apr 30Safer planting date10% chance of 32°F after this date
- Oct 22First fall frost (median)50% chance of 32°F by this date
- 192 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 10 | Apr 26 | May 11 |
| 32°F | Mar 31 | Apr 14 | Apr 30 |
| 28°F | Mar 16 | Apr 3 | Apr 20 |
| 24°F | Feb 28 | Mar 24 | Apr 10 |
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 13 | Oct 26 |
| 32°F | Oct 9 | Oct 22 | Nov 5 |
| 28°F | Oct 18 | Nov 2 | Nov 17 |
| 24°F | Oct 29 | Nov 14 | Dec 4 |
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 | 148 days | 170 days | 190 days |
| 32°F | 169 days | 192 days | 213 days |
| 28°F | 190 days | 213 days | 238 days |
| 24°F | 210 days | 236 days | 263 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 |
|---|---|---|---|
| 37091 | 7b | 5 to 10°F | 9 km |
| 37019 | 7b | 5 to 10°F | 9 km |
| 37047 | 7b | 5 to 10°F | 11 km |
| 38451 | 7b | 5 to 10°F | 17 km |
| 37144 | 7b | 5 to 10°F | 18 km |
| 38472 | 7b | 5 to 10°F | 21 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 USC00405187, at 35.4139, -86.8086, elevation 240 m (787 ft).
- Data quality: Standard (24+ years of data), 28 years of freeze data.
- Average days per year at or below 32°F: 95.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Shelbyville Water Dept (31 km)
- Pulaski Wastewater Plant (33 km)
- Columbia 3 WNW (35 km)
- Neapolis Reservoir & Edu Station (37 km)
- Mount Pleasant 1n (39 km)
- Fayetteville Water Plant (39 km)
- Thompson Station (40 km)
- Lynchburg (42 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.