Frost dates for 37388Tullahoma, TN
The average last spring frost in Tullahoma is April 6 and the average first fall frost is October 30, giving a typical growing season of about 207 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Apr 6
- Average first fall frost
- Oct 30
- Growing season
- 207 days
Safer after Apr 23 (1-in-10 risk)
Possible by Oct 18 (1-in-10 risk)
Last frost typically in 154 days
Frost risk by date
NOAA reports frost dates as probabilities. The middle date is the average (a 50% chance). For spring, the 10% date is a safer planting date: frost after it happens in about 1 year in 10. Light frost (36°F) can damage tender plants; a hard freeze (28°F) kills most annuals.
| Temperature | Last spring: 90% / 50% / 10% chance | First fall: 10% / 50% / 90% chance | Growing season (50%) | Years with at least one |
|---|---|---|---|---|
| Light frost (36°F) | Apr 3 · Apr 19 · May 4 | Oct 9 · Oct 21 · Nov 2 | 184 days | 100% |
| Frost / freeze (32°F) | Mar 21 · Apr 6 · Apr 23 | Oct 18 · Oct 30 · Nov 12 | 207 days | 100% |
| Hard freeze (28°F) | Mar 6 · Mar 26 · Apr 11 | Oct 27 · Nov 8 · Nov 26 | 230 days | 100% |
Planting calendar for Tullahoma
Planting windows from the University of Maryland Extension calendar, shifted to your average frost dates. Use them as a starting point and adjust for seed packet instructions and local conditions.
| Crop | Task | Window |
|---|---|---|
| Tomatoes | Start seeds indoors | Mar 6 – May 12 |
| Tomatoes | Transplant outdoors | Apr 22 – Jul 10 |
| Peppers | Start seeds indoors | Mar 6 – Apr 6 |
| Peppers | Transplant outdoors | May 6 – Jun 6 |
| Eggplant | Start seeds indoors | Mar 23 – Apr 21 |
| Eggplant | Transplant outdoors | May 6 – Jun 6 |
| Cucumbers | Sow outdoors | May 6 – Jul 20 |
| Summer squash | Sow outdoors | Apr 22 – Jun 6 |
| Winter squash & pumpkins | Sow outdoors | May 6 – Jun 6 |
| Snap beans | Sow outdoors | Apr 22 – Aug 12 |
| Sweet corn | Sow outdoors | Apr 22 – Jul 10 |
| Watermelon & cantaloupe | Sow outdoors | May 6 – Jun 6 |
| Okra | Sow outdoors | Apr 29 – May 22 |
| Peas | Sow outdoors (spring) | Mar 6 – Apr 21 |
| Potatoes | Plant outdoors (spring) | Mar 6 – May 6 |
| Onions | Start seeds indoors (spring) | Jan 23 – Feb 19 |
| Onions | Transplant outdoors (spring) | Mar 23 – Apr 21 |
| Broccoli | Start seeds indoors (spring) | Feb 16 – Mar 22 |
| Broccoli | Transplant outdoors (spring) | Mar 23 – Apr 21 |
| Broccoli | Start seeds indoors (fall) | Jun 30 – Jul 10 |
| Broccoli | Transplant outdoors (fall) | Jul 30 – Aug 10 |
| Cabbage | Start seeds indoors (spring) | Feb 6 – Mar 6 |
| Cabbage | Transplant outdoors (spring) | Mar 6 – Apr 6 |
| Cabbage | Start seeds indoors (fall) | Jun 20 – Jul 20 |
| Cabbage | Transplant outdoors (fall) | Jul 20 – Aug 20 |
| Leaf lettuce | Sow outdoors (spring) | Mar 6 – May 22 |
| Leaf lettuce | Sow outdoors (fall) | Jul 20 – Sep 5 |
| Spinach | Sow outdoors (spring) | Feb 27 – Apr 12 |
| Spinach | Sow outdoors (fall) | Aug 6 – Sep 10 |
| Radishes | Sow outdoors (spring) | Mar 6 – Apr 26 |
| Radishes | Sow outdoors (fall) | Jul 20 – Sep 20 |
| Kale | Sow outdoors (spring) | Mar 23 – Apr 12 |
| Kale | Sow outdoors (fall) | Jul 13 – Aug 20 |
| Carrots | Sow outdoors (spring) | Apr 6 – May 22 |
| Carrots | Sow outdoors (fall) | Jun 20 – Aug 5 |
| Garlic | Plant outdoors (fall) | Oct 20 – Nov 20 |
Where these dates come from
ZIP code 37388 is matched to the NOAA station Tullahoma, TN, 1 km away, at 1,022 ft elevation (34 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Tullahoma, TN (used) | 1,022 ft | Apr 6 | Oct 30 |
| Lynchburg, TN | 810 ft | Apr 15 | Oct 25 |
| Wartrace 6E, TN | 1,014 ft | Apr 1 | Nov 2 |
| Manchester #2, TN | 1,070 ft | Apr 13 | Oct 24 |
Frost dates near Tullahoma
- Normandy, TN 37360 · last Apr 6, first Oct 30
- Estill Springs, TN 37330 · last Apr 6, first Oct 30
- Lynchburg, TN 37352 · last Apr 15, first Oct 25
- Decherd, TN 37324 · last Apr 6, first Oct 29
- Winchester, TN 37398 · last Apr 6, first Oct 29
- Manchester, TN 37355 · last Apr 13, first Oct 24
- Wartrace, TN 37183 · last Apr 7, first Oct 29
- Arnold Afb, TN 37389 · last Apr 13, first Oct 24
Frequently asked questions
- When is the last frost in Tullahoma, TN?
- For ZIP code 37388, the average last spring frost (32°F) is April 6, based on NOAA 1991-2020 climate normals for the Tullahoma, TN weather station. There is a 1-in-10 chance of a frost after April 23.
- When is the first frost in Tullahoma, TN?
- The average first fall frost (32°F) is October 30. There is a 1-in-10 chance of frost by October 18, so tender plants are at risk from that point on.
- How long is the growing season in 37388?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 207 days long.
- Are these frost dates a forecast?
- No. They are 30-year averages and probabilities from NOAA weather station records. Use them to plan, then watch your local forecast before planting tender crops or leaving them uncovered.