Frost dates for 37074Hartsville, TN
The average last spring frost in Hartsville is April 10 and the average first fall frost is October 30, giving a typical growing season of about 202 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Apr 10
- Average first fall frost
- Oct 30
- Growing season
- 202 days
Safer after Apr 29 (1-in-10 risk)
Possible by Oct 18 (1-in-10 risk)
Last frost typically in 158 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 5 · Apr 22 · May 8 | Oct 9 · Oct 22 · Nov 1 | 183 days | 100% |
| Frost / freeze (32°F) | Mar 22 · Apr 10 · Apr 29 | Oct 18 · Oct 30 · Nov 12 | 202 days | 100% |
| Hard freeze (28°F) | Mar 8 · Mar 29 · Apr 13 | Oct 27 · Nov 9 · Nov 27 | 227 days | 100% |
Planting calendar for Hartsville
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 10 – May 16 |
| Tomatoes | Transplant outdoors | Apr 26 – Jul 10 |
| Peppers | Start seeds indoors | Mar 10 – Apr 10 |
| Peppers | Transplant outdoors | May 10 – Jun 10 |
| Eggplant | Start seeds indoors | Mar 27 – Apr 25 |
| Eggplant | Transplant outdoors | May 10 – Jun 10 |
| Cucumbers | Sow outdoors | May 10 – Jul 20 |
| Summer squash | Sow outdoors | Apr 26 – Jun 10 |
| Winter squash & pumpkins | Sow outdoors | May 10 – Jun 10 |
| Snap beans | Sow outdoors | Apr 26 – Aug 12 |
| Sweet corn | Sow outdoors | Apr 26 – Jul 10 |
| Watermelon & cantaloupe | Sow outdoors | May 10 – Jun 10 |
| Okra | Sow outdoors | May 3 – May 26 |
| Peas | Sow outdoors (spring) | Mar 10 – Apr 25 |
| Potatoes | Plant outdoors (spring) | Mar 10 – May 10 |
| Onions | Start seeds indoors (spring) | Jan 27 – Feb 23 |
| Onions | Transplant outdoors (spring) | Mar 27 – Apr 25 |
| Broccoli | Start seeds indoors (spring) | Feb 20 – Mar 26 |
| Broccoli | Transplant outdoors (spring) | Mar 27 – Apr 25 |
| Broccoli | Start seeds indoors (fall) | Jun 30 – Jul 10 |
| Broccoli | Transplant outdoors (fall) | Jul 30 – Aug 10 |
| Cabbage | Start seeds indoors (spring) | Feb 10 – Mar 10 |
| Cabbage | Transplant outdoors (spring) | Mar 10 – Apr 10 |
| Cabbage | Start seeds indoors (fall) | Jun 20 – Jul 20 |
| Cabbage | Transplant outdoors (fall) | Jul 20 – Aug 20 |
| Leaf lettuce | Sow outdoors (spring) | Mar 10 – May 26 |
| Leaf lettuce | Sow outdoors (fall) | Jul 20 – Sep 5 |
| Spinach | Sow outdoors (spring) | Mar 3 – Apr 16 |
| Spinach | Sow outdoors (fall) | Aug 6 – Sep 10 |
| Radishes | Sow outdoors (spring) | Mar 10 – Apr 30 |
| Radishes | Sow outdoors (fall) | Jul 20 – Sep 20 |
| Kale | Sow outdoors (spring) | Mar 27 – Apr 16 |
| Kale | Sow outdoors (fall) | Jul 13 – Aug 20 |
| Carrots | Sow outdoors (spring) | Apr 10 – May 26 |
| Carrots | Sow outdoors (fall) | Jun 20 – Aug 5 |
| Garlic | Plant outdoors (fall) | Oct 20 – Nov 20 |
Where these dates come from
ZIP code 37074 is matched to the NOAA station Lebanon 7 N, TN, 13.6 km away, at 510 ft elevation (44 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Lebanon 7 N, TN (used) | 510 ft | Apr 10 | Oct 30 |
| Hartsville, TN | 511 ft | Apr 12 | Oct 26 |
| Bethpage 1 S, TN | 560 ft | Apr 16 | Oct 23 |
| Lafayette, TN | 975 ft | Apr 3 | Nov 1 |
Frost dates near Hartsville
- Dixon Springs, TN 37057 · last Apr 3, first Nov 1
- Castalian Springs, TN 37031 · last Apr 16, first Oct 23
- Riddleton, TN 37151 · last Apr 10, first Oct 29
- Bethpage, TN 37022 · last Apr 16, first Oct 23
- Lafayette, TN 37083 · last Apr 3, first Nov 1
- Westmoreland, TN 37186 · last Apr 3, first Nov 1
- Pleasant Shade, TN 37145 · last Apr 10, first Oct 29
- Lebanon, TN 37088 · last Apr 6, first Oct 28
Frequently asked questions
- When is the last frost in Hartsville, TN?
- For ZIP code 37074, the average last spring frost (32°F) is April 10, based on NOAA 1991-2020 climate normals for the Lebanon 7 N, TN weather station. There is a 1-in-10 chance of a frost after April 29.
- When is the first frost in Hartsville, 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 37074?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 202 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.