Last spring frost
Mar 31
Frost Dates for Oliver Springs, TN
First fall frost
Nov 4
Growing season
218 days
Hardiness zone
7a
In an average year around Oliver Springs, TN, the last spring frost (32°F) is about Mar 31 and the first fall frost is about Nov 4, giving roughly a 218-day growing season. To be safe most years, wait until Mar 11 before setting out tender plants.
Last spring frost
Dates the last frost of spring typically ends. Plant tender crops after the risk has passed for your comfort level.
| Frost intensity | Early (10%) | Average (50%) | Late (90%) |
|---|---|---|---|
| Light (36°F) | Apr 30 | Apr 12 | Mar 28 |
| Freeze (32°F) | Apr 15 | Mar 31 | Mar 11 |
| Hard (28°F) | Apr 3 | Mar 18 | Feb 26 |
| Severe (24°F) | Mar 23 | Mar 4 | Feb 9 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Apr 30 | Apr 23 | Apr 20 | Apr 16 | Apr 12 | Apr 9 | Apr 6 | Apr 2 | Mar 28 |
| 32°F | Apr 15 | Apr 9 | Apr 5 | Apr 2 | Mar 31 | Mar 27 | Mar 23 | Mar 18 | Mar 11 |
| 28°F | Apr 3 | Mar 30 | Mar 26 | Mar 21 | Mar 18 | Mar 14 | Mar 8 | Mar 4 | Feb 26 |
| 24°F | Mar 23 | Mar 17 | Mar 13 | Mar 7 | Mar 4 | Feb 28 | Feb 24 | Feb 18 | Feb 9 |
| 20°F | Mar 13 | Mar 5 | Feb 27 | Feb 22 | Feb 17 | Feb 10 | Feb 5 | Jan 31 | Jan 21 |
| 16°F | Mar 2 | Feb 21 | Feb 11 | Feb 5 | Feb 1 | Jan 28 | Jan 22 | Jan 14 | Jan 5 |
First fall frost
Dates the first frost of fall typically arrives. Count back by a crop's days-to-maturity to know your planting cutoff.
| Frost intensity | Early (10%) | Average (50%) | Late (90%) |
|---|---|---|---|
| Light (36°F) | Oct 14 | Oct 27 | Nov 8 |
| Freeze (32°F) | Oct 22 | Nov 4 | Nov 18 |
| Hard (28°F) | Nov 1 | Nov 15 | Dec 4 |
| Severe (24°F) | Nov 11 | Dec 1 | Dec 23 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 14 | Oct 18 | Oct 22 | Oct 25 | Oct 27 | Oct 29 | Nov 1 | Nov 3 | Nov 8 |
| 32°F | Oct 22 | Oct 27 | Oct 30 | Nov 1 | Nov 4 | Nov 6 | Nov 9 | Nov 13 | Nov 18 |
| 28°F | Nov 1 | Nov 5 | Nov 9 | Nov 12 | Nov 15 | Nov 18 | Nov 23 | Nov 29 | Dec 4 |
| 24°F | Nov 11 | Nov 17 | Nov 22 | Nov 26 | Dec 1 | Dec 4 | Dec 10 | Dec 17 | Dec 23 |
| 20°F | Nov 26 | Dec 3 | Dec 8 | Dec 14 | Dec 21 | Dec 25 | Dec 31 | Jan 5 | Jan 13 |
| 16°F | Dec 10 | Dec 20 | Dec 25 | Dec 31 | Jan 3 | Jan 7 | Jan 12 | Jan 18 | Jan 27 |
Growing season is measured at 32°F with about 50% probability. Hardiness zone from the 2023 USDA map; frost normals from NOAA 1991-2020.
Where this data comes from
@endif These dates are computed from the nearest official weather station with long-term records: Oak Ridge Asos, Tn, about 10.3 miles away@if(!empty($station['elevation_ft'])), at 910 ft elevation. The further the station and the greater the elevation difference from your yard, the more your local frost timing can vary.
How we calculate these dates
Frost and freeze dates come from the NOAA 1991–2020 U.S. Climate Normals, the National Oceanic and Atmospheric Administration's 30-year averages for each weather station. A date shown at the 50% level is the median: in half of years the frost falls on or before it. The 10% and 90% columns show the early and late ends of the range, so you can plant on the odds you're comfortable with. These are long-term averages, not a forecast for this year - always check your local outlook before planting.
Source: NOAA National Centers for Environmental Information, 1991–2020 Climate Normals (public domain). Harman is not affiliated with or endorsed by NOAA.
Frequently asked questions
When is the last frost in Oliver Springs, TN?
On average, the last spring frost (32°F) around Oliver Springs, TN is about Mar 31. In cooler years it can run later, so for a safer bet many gardeners wait until Mar 11.
When is the first frost in the fall?
The first fall frost around Oliver Springs, TN typically arrives about Nov 4. Count back by a crop's days to maturity to find the latest date you can plant it.
When can I plant tomatoes and other tender crops?
Tender crops like tomatoes, peppers and basil are damaged by frost, so wait until the last spring frost has passed - around Mar 31 on average, or Mar 11 to be safe most years.
How long is the growing season here?
The frost-free growing season (between the last spring and first fall 32°F frost) is about 218 days in a typical year.
Are these dates a forecast for this year?
No. They are 30-year averages from the NOAA 1991–2020 Climate Normals, not a prediction for the current year. Use them for planning and always check your local weather forecast before planting or protecting crops.
Local weather for 37710 Planting calendar → Tennessee frost dates →
Data source: NOAA 1991–2020 Climate Normals · Page updated Aug 4, 2026