Frost dates for 30420Cobbtown, GA
The average last spring frost in Cobbtown is March 2 and the average first fall frost is November 27, giving a typical growing season of about 269 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Mar 2
- Average first fall frost
- Nov 27
- Growing season
- 269 days
Safer after Mar 25 (1-in-10 risk)
Possible by Nov 7 (1-in-10 risk)
First frost typically in 24 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) | Feb 27 · Mar 19 · Apr 7 | Nov 1 · Nov 13 · Dec 5 | 241 days | 100% |
| Frost / freeze (32°F) | Feb 2 · Mar 2 · Mar 25 | Nov 7 · Nov 27 · Dec 28 | 269 days | 100% |
| Hard freeze (28°F) | Jan 14 · Feb 12 · Mar 12 | Nov 17 · Dec 16 · Jan 14 | 305 days | 97% |
Planting calendar for Cobbtown
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 | Jan 30 – Apr 7 |
| Tomatoes | Transplant outdoors | Mar 18 – Aug 7 |
| Peppers | Start seeds indoors | Jan 30 – Mar 2 |
| Peppers | Transplant outdoors | Apr 1 – May 2 |
| Eggplant | Start seeds indoors | Feb 16 – Mar 17 |
| Eggplant | Transplant outdoors | Apr 1 – May 2 |
| Cucumbers | Sow outdoors | Apr 1 – Aug 17 |
| Summer squash | Sow outdoors | Mar 18 – May 2 |
| Winter squash & pumpkins | Sow outdoors | Apr 1 – May 2 |
| Snap beans | Sow outdoors | Mar 18 – Sep 9 |
| Sweet corn | Sow outdoors | Mar 18 – Aug 7 |
| Watermelon & cantaloupe | Sow outdoors | Apr 1 – May 2 |
| Okra | Sow outdoors | Mar 25 – Apr 17 |
| Peas | Sow outdoors (spring) | Jan 30 – Mar 17 |
| Potatoes | Plant outdoors (spring) | Jan 30 – Apr 1 |
| Onions | Start seeds indoors (spring) | Dec 19 – Jan 15 |
| Onions | Transplant outdoors (spring) | Feb 16 – Mar 17 |
| Broccoli | Start seeds indoors (spring) | Jan 12 – Feb 15 |
| Broccoli | Transplant outdoors (spring) | Feb 16 – Mar 17 |
| Broccoli | Start seeds indoors (fall) | Jul 28 – Aug 7 |
| Broccoli | Transplant outdoors (fall) | Aug 27 – Sep 7 |
| Cabbage | Start seeds indoors (spring) | Jan 2 – Jan 30 |
| Cabbage | Transplant outdoors (spring) | Jan 30 – Mar 2 |
| Cabbage | Start seeds indoors (fall) | Jul 18 – Aug 17 |
| Cabbage | Transplant outdoors (fall) | Aug 17 – Sep 17 |
| Leaf lettuce | Sow outdoors (spring) | Jan 30 – Apr 17 |
| Leaf lettuce | Sow outdoors (fall) | Aug 17 – Oct 3 |
| Spinach | Sow outdoors (spring) | Jan 23 – Mar 8 |
| Spinach | Sow outdoors (fall) | Sep 3 – Oct 8 |
| Radishes | Sow outdoors (spring) | Jan 30 – Mar 22 |
| Radishes | Sow outdoors (fall) | Aug 17 – Oct 18 |
| Kale | Sow outdoors (spring) | Feb 16 – Mar 8 |
| Kale | Sow outdoors (fall) | Aug 10 – Sep 17 |
| Carrots | Sow outdoors (spring) | Mar 2 – Apr 17 |
| Carrots | Sow outdoors (fall) | Jul 18 – Sep 2 |
| Garlic | Plant outdoors (fall) | Nov 17 – Dec 18 |
Where these dates come from
ZIP code 30420 is matched to the NOAA station Metter, GA, 16.1 km away, at 120 ft elevation (136 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Metter, GA (used) | 120 ft | Mar 2 | Nov 27 |
| Glennville 3Nw, GA | 200 ft | Mar 9 | Nov 24 |
| Brooklet 1 W, GA | 180 ft | Mar 7 | Nov 21 |
| Baxley 5Nnw, GA | 213 ft | Mar 15 | Nov 18 |
Frost dates near Cobbtown
- Collins, GA 30421 · last Mar 9, first Nov 24
- Manassas, GA 30438 · last Mar 9, first Nov 24
- Metter, GA 30439 · last Mar 2, first Nov 27
- Lyons, GA 30436 · last Mar 9, first Nov 24
- Bellville, GA 30414 · last Mar 9, first Nov 24
- Reidsville, GA 30499 · last Mar 9, first Nov 24
- Stillmore, GA 30464 · last Mar 2, first Nov 27
- Pulaski, GA 30451 · last Mar 7, first Nov 21
Frequently asked questions
- When is the last frost in Cobbtown, GA?
- For ZIP code 30420, the average last spring frost (32°F) is March 2, based on NOAA 1991-2020 climate normals for the Metter, GA weather station. There is a 1-in-10 chance of a frost after March 25.
- When is the first frost in Cobbtown, GA?
- The average first fall frost (32°F) is November 27. There is a 1-in-10 chance of frost by November 7, so tender plants are at risk from that point on.
- How long is the growing season in 30420?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 269 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.