Frost dates for 37067Franklin, TN
The average last spring frost in Franklin is April 3 and the average first fall frost is October 31, giving a typical growing season of about 210 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Apr 3
- Average first fall frost
- Oct 31
- Growing season
- 210 days
Safer after Apr 20 (1-in-10 risk)
Possible by Oct 18 (1-in-10 risk)
Last frost typically in 151 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) | Mar 31 · Apr 16 · May 2 | Oct 10 · Oct 22 · Nov 3 | 187 days | 100% |
| Frost / freeze (32°F) | Mar 17 · Apr 3 · Apr 20 | Oct 18 · Oct 31 · Nov 13 | 210 days | 100% |
| Hard freeze (28°F) | Mar 2 · Mar 22 · Apr 8 | Oct 30 · Nov 10 · Nov 30 | 233 days | 100% |
Planting calendar for Franklin
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 3 – May 9 |
| Tomatoes | Transplant outdoors | Apr 19 – Jul 11 |
| Peppers | Start seeds indoors | Mar 3 – Apr 3 |
| Peppers | Transplant outdoors | May 3 – Jun 3 |
| Eggplant | Start seeds indoors | Mar 20 – Apr 18 |
| Eggplant | Transplant outdoors | May 3 – Jun 3 |
| Cucumbers | Sow outdoors | May 3 – Jul 21 |
| Summer squash | Sow outdoors | Apr 19 – Jun 3 |
| Winter squash & pumpkins | Sow outdoors | May 3 – Jun 3 |
| Snap beans | Sow outdoors | Apr 19 – Aug 13 |
| Sweet corn | Sow outdoors | Apr 19 – Jul 11 |
| Watermelon & cantaloupe | Sow outdoors | May 3 – Jun 3 |
| Okra | Sow outdoors | Apr 26 – May 19 |
| Peas | Sow outdoors (spring) | Mar 3 – Apr 18 |
| Potatoes | Plant outdoors (spring) | Mar 3 – May 3 |
| Onions | Start seeds indoors (spring) | Jan 20 – Feb 16 |
| Onions | Transplant outdoors (spring) | Mar 20 – Apr 18 |
| Broccoli | Start seeds indoors (spring) | Feb 13 – Mar 19 |
| Broccoli | Transplant outdoors (spring) | Mar 20 – Apr 18 |
| Broccoli | Start seeds indoors (fall) | Jul 1 – Jul 11 |
| Broccoli | Transplant outdoors (fall) | Jul 31 – Aug 11 |
| Cabbage | Start seeds indoors (spring) | Feb 3 – Mar 3 |
| Cabbage | Transplant outdoors (spring) | Mar 3 – Apr 3 |
| Cabbage | Start seeds indoors (fall) | Jun 21 – Jul 21 |
| Cabbage | Transplant outdoors (fall) | Jul 21 – Aug 21 |
| Leaf lettuce | Sow outdoors (spring) | Mar 3 – May 19 |
| Leaf lettuce | Sow outdoors (fall) | Jul 21 – Sep 6 |
| Spinach | Sow outdoors (spring) | Feb 24 – Apr 9 |
| Spinach | Sow outdoors (fall) | Aug 7 – Sep 11 |
| Radishes | Sow outdoors (spring) | Mar 3 – Apr 23 |
| Radishes | Sow outdoors (fall) | Jul 21 – Sep 21 |
| Kale | Sow outdoors (spring) | Mar 20 – Apr 9 |
| Kale | Sow outdoors (fall) | Jul 14 – Aug 21 |
| Carrots | Sow outdoors (spring) | Apr 3 – May 19 |
| Carrots | Sow outdoors (fall) | Jun 21 – Aug 6 |
| Garlic | Plant outdoors (fall) | Oct 21 – Nov 21 |
Where these dates come from
ZIP code 37067 is matched to the NOAA station Franklin Sewage Plt, TN, 9.8 km away, at 655 ft elevation (172 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Franklin Sewage Plt, TN (used) | 655 ft | Apr 3 | Oct 31 |
| Brentwood, TN | 707 ft | Apr 15 | Oct 26 |
| Smyrna 6S, TN | 550 ft | Apr 13 | Oct 21 |
| Warner Park, TN | 625 ft | Apr 6 | Nov 1 |
Frost dates near Franklin
- Nolensville, TN 37135 · last Apr 3, first Oct 31
- Franklin, TN 37065 · last Apr 3, first Oct 31
- Brentwood, TN 37027 · last Apr 3, first Oct 31
- Arrington, TN 37014 · last Apr 14, first Oct 25
- College Grove, TN 37046 · last Apr 5, first Oct 29
- Thompsons Station, TN 37179 · last Apr 5, first Oct 29
- Nashville, TN 37220 · last Mar 31, first Nov 3
- Antioch, TN 37011 · last Mar 31, first Nov 3
Frequently asked questions
- When is the last frost in Franklin, TN?
- For ZIP code 37067, the average last spring frost (32°F) is April 3, based on NOAA 1991-2020 climate normals for the Franklin Sewage Plt, TN weather station. There is a 1-in-10 chance of a frost after April 20.
- When is the first frost in Franklin, TN?
- The average first fall frost (32°F) is October 31. 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 37067?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 210 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.