Frost dates for 30286Thomaston, GA
The average last spring frost in Thomaston is March 23 and the average first fall frost is November 12, giving a typical growing season of about 234 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Mar 23
- Average first fall frost
- Nov 12
- Growing season
- 234 days
Safer after Apr 11 (1-in-10 risk)
Possible by Oct 31 (1-in-10 risk)
First frost typically in 9 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 19 · Apr 5 · Apr 20 | Oct 20 · Nov 1 · Nov 16 | 211 days | 100% |
| Frost / freeze (32°F) | Mar 1 · Mar 23 · Apr 11 | Oct 31 · Nov 12 · Nov 28 | 234 days | 100% |
| Hard freeze (28°F) | Feb 14 · Mar 10 · Mar 29 | Nov 7 · Nov 26 · Dec 18 | 260 days | 100% |
Planting calendar for Thomaston
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 | Feb 20 – Apr 28 |
| Tomatoes | Transplant outdoors | Apr 8 – Jul 23 |
| Peppers | Start seeds indoors | Feb 20 – Mar 23 |
| Peppers | Transplant outdoors | Apr 22 – May 23 |
| Eggplant | Start seeds indoors | Mar 9 – Apr 7 |
| Eggplant | Transplant outdoors | Apr 22 – May 23 |
| Cucumbers | Sow outdoors | Apr 22 – Aug 2 |
| Summer squash | Sow outdoors | Apr 8 – May 23 |
| Winter squash & pumpkins | Sow outdoors | Apr 22 – May 23 |
| Snap beans | Sow outdoors | Apr 8 – Aug 25 |
| Sweet corn | Sow outdoors | Apr 8 – Jul 23 |
| Watermelon & cantaloupe | Sow outdoors | Apr 22 – May 23 |
| Okra | Sow outdoors | Apr 15 – May 8 |
| Peas | Sow outdoors (spring) | Feb 20 – Apr 7 |
| Potatoes | Plant outdoors (spring) | Feb 20 – Apr 22 |
| Onions | Start seeds indoors (spring) | Jan 9 – Feb 5 |
| Onions | Transplant outdoors (spring) | Mar 9 – Apr 7 |
| Broccoli | Start seeds indoors (spring) | Feb 2 – Mar 8 |
| Broccoli | Transplant outdoors (spring) | Mar 9 – Apr 7 |
| Broccoli | Start seeds indoors (fall) | Jul 13 – Jul 23 |
| Broccoli | Transplant outdoors (fall) | Aug 12 – Aug 23 |
| Cabbage | Start seeds indoors (spring) | Jan 23 – Feb 20 |
| Cabbage | Transplant outdoors (spring) | Feb 20 – Mar 23 |
| Cabbage | Start seeds indoors (fall) | Jul 3 – Aug 2 |
| Cabbage | Transplant outdoors (fall) | Aug 2 – Sep 2 |
| Leaf lettuce | Sow outdoors (spring) | Feb 20 – May 8 |
| Leaf lettuce | Sow outdoors (fall) | Aug 2 – Sep 18 |
| Spinach | Sow outdoors (spring) | Feb 13 – Mar 29 |
| Spinach | Sow outdoors (fall) | Aug 19 – Sep 23 |
| Radishes | Sow outdoors (spring) | Feb 20 – Apr 12 |
| Radishes | Sow outdoors (fall) | Aug 2 – Oct 3 |
| Kale | Sow outdoors (spring) | Mar 9 – Mar 29 |
| Kale | Sow outdoors (fall) | Jul 26 – Sep 2 |
| Carrots | Sow outdoors (spring) | Mar 23 – May 8 |
| Carrots | Sow outdoors (fall) | Jul 3 – Aug 18 |
| Garlic | Plant outdoors (fall) | Nov 2 – Dec 3 |
Where these dates come from
ZIP code 30286 is matched to the NOAA station Thomaston 4Se, GA, 7.4 km away, at 620 ft elevation (144 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Thomaston 4Se, GA (used) | 620 ft | Mar 23 | Nov 12 |
| The Rock Rch, GA | 821 ft | Mar 18 | Nov 14 |
| Talbotton, GA | 620 ft | Apr 1 | Nov 3 |
| Experiment, GA | 934 ft | Mar 20 | Nov 13 |
Frost dates near Thomaston
- The Rock, GA 30285 · last Mar 18, first Nov 14
- Meansville, GA 30256 · last Mar 18, first Nov 14
- Molena, GA 30258 · last Mar 18, first Nov 14
- Yatesville, GA 31097 · last Mar 23, first Nov 12
- Zebulon, GA 30295 · last Mar 18, first Nov 14
- Barnesville, GA 30204 · last Mar 18, first Nov 14
- Concord, GA 30206 · last Mar 26, first Nov 6
- Woodland, GA 31836 · last Apr 1, first Nov 3
Frequently asked questions
- When is the last frost in Thomaston, GA?
- For ZIP code 30286, the average last spring frost (32°F) is March 23, based on NOAA 1991-2020 climate normals for the Thomaston 4Se, GA weather station. There is a 1-in-10 chance of a frost after April 11.
- When is the first frost in Thomaston, GA?
- The average first fall frost (32°F) is November 12. There is a 1-in-10 chance of frost by October 31, so tender plants are at risk from that point on.
- How long is the growing season in 30286?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 234 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.