Frost dates for 37744Greeneville, TN
The average last spring frost in Greeneville is April 20 and the average first fall frost is October 22, giving a typical growing season of about 185 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Apr 20
- Average first fall frost
- Oct 22
- Growing season
- 185 days
Safer after May 8 (1-in-10 risk)
Possible by Oct 8 (1-in-10 risk)
Last frost typically in 168 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 18 · May 2 · May 16 | Oct 1 · Oct 13 · Oct 28 | 165 days | 100% |
| Frost / freeze (32°F) | Apr 4 · Apr 20 · May 8 | Oct 8 · Oct 22 · Nov 3 | 185 days | 100% |
| Hard freeze (28°F) | Mar 22 · Apr 6 · Apr 24 | Oct 17 · Nov 1 · Nov 12 | 207 days | 100% |
Planting calendar for Greeneville
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 20 – May 26 |
| Tomatoes | Transplant outdoors | May 6 – Jul 2 |
| Peppers | Start seeds indoors | Mar 20 – Apr 20 |
| Peppers | Transplant outdoors | May 20 – Jun 20 |
| Eggplant | Start seeds indoors | Apr 6 – May 5 |
| Eggplant | Transplant outdoors | May 20 – Jun 20 |
| Cucumbers | Sow outdoors | May 20 – Jul 12 |
| Summer squash | Sow outdoors | May 6 – Jun 20 |
| Winter squash & pumpkins | Sow outdoors | May 20 – Jun 20 |
| Snap beans | Sow outdoors | May 6 – Aug 4 |
| Sweet corn | Sow outdoors | May 6 – Jul 2 |
| Watermelon & cantaloupe | Sow outdoors | May 20 – Jun 20 |
| Okra | Sow outdoors | May 13 – Jun 5 |
| Peas | Sow outdoors (spring) | Mar 20 – May 5 |
| Potatoes | Plant outdoors (spring) | Mar 20 – May 20 |
| Onions | Start seeds indoors (spring) | Feb 6 – Mar 5 |
| Onions | Transplant outdoors (spring) | Apr 6 – May 5 |
| Broccoli | Start seeds indoors (spring) | Mar 2 – Apr 5 |
| Broccoli | Transplant outdoors (spring) | Apr 6 – May 5 |
| Broccoli | Start seeds indoors (fall) | Jun 22 – Jul 2 |
| Broccoli | Transplant outdoors (fall) | Jul 22 – Aug 2 |
| Cabbage | Start seeds indoors (spring) | Feb 20 – Mar 20 |
| Cabbage | Transplant outdoors (spring) | Mar 20 – Apr 20 |
| Cabbage | Start seeds indoors (fall) | Jun 12 – Jul 12 |
| Cabbage | Transplant outdoors (fall) | Jul 12 – Aug 12 |
| Leaf lettuce | Sow outdoors (spring) | Mar 20 – Jun 5 |
| Leaf lettuce | Sow outdoors (fall) | Jul 12 – Aug 28 |
| Spinach | Sow outdoors (spring) | Mar 13 – Apr 26 |
| Spinach | Sow outdoors (fall) | Jul 29 – Sep 2 |
| Radishes | Sow outdoors (spring) | Mar 20 – May 10 |
| Radishes | Sow outdoors (fall) | Jul 12 – Sep 12 |
| Kale | Sow outdoors (spring) | Apr 6 – Apr 26 |
| Kale | Sow outdoors (fall) | Jul 5 – Aug 12 |
| Carrots | Sow outdoors (spring) | Apr 20 – Jun 5 |
| Carrots | Sow outdoors (fall) | Jun 12 – Jul 28 |
| Garlic | Plant outdoors (fall) | Oct 12 – Nov 12 |
Where these dates come from
ZIP code 37744 is matched to the NOAA station Greeneville Exp Stn, TN, 7 km away, at 1,320 ft elevation (114 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Greeneville Exp Stn, TN (used) | 1,320 ft | Apr 20 | Oct 22 |
| Rogersville 1 Ne, TN | 1,355 ft | Apr 14 | Oct 24 |
| Hot Springs, NC | 1,345 ft | Apr 11 | Oct 29 |
| Newport 1 Nw, TN | 1,036 ft | Apr 7 | Oct 29 |
Frost dates near Greeneville
- Greeneville, TN 37743 · last Apr 20, first Oct 22
- Mosheim, TN 37818 · last Apr 20, first Oct 22
- Afton, TN 37616 · last Apr 20, first Oct 22
- Midway, TN 37809 · last Apr 20, first Oct 22
- Chuckey, TN 37641 · last Apr 21, first Oct 23
- Bulls Gap, TN 37711 · last Apr 14, first Oct 24
- Mohawk, TN 37810 · last Apr 7, first Oct 29
- Limestone, TN 37681 · last Apr 21, first Oct 23
Frequently asked questions
- When is the last frost in Greeneville, TN?
- For ZIP code 37744, the average last spring frost (32°F) is April 20, based on NOAA 1991-2020 climate normals for the Greeneville Exp Stn, TN weather station. There is a 1-in-10 chance of a frost after May 8.
- When is the first frost in Greeneville, TN?
- The average first fall frost (32°F) is October 22. There is a 1-in-10 chance of frost by October 8, so tender plants are at risk from that point on.
- How long is the growing season in 37744?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 185 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.