Frost dates for 30421Collins, GA
The average last spring frost in Collins is March 9 and the average first fall frost is November 24, giving a typical growing season of about 258 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Mar 9
- Average first fall frost
- Nov 24
- Growing season
- 258 days
Safer after Mar 30 (1-in-10 risk)
Possible by Nov 5 (1-in-10 risk)
First frost typically in 21 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 4 · Mar 23 · Apr 10 | Oct 27 · Nov 9 · Nov 30 | 231 days | 100% |
| Frost / freeze (32°F) | Feb 16 · Mar 9 · Mar 30 | Nov 5 · Nov 24 · Dec 15 | 258 days | 100% |
| Hard freeze (28°F) | Jan 23 · Feb 23 · Mar 17 | Nov 18 · Dec 9 · Jan 8 | 291 days | 99% |
Planting calendar for Collins
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 6 – Apr 14 |
| Tomatoes | Transplant outdoors | Mar 25 – Aug 4 |
| Peppers | Start seeds indoors | Feb 6 – Mar 9 |
| Peppers | Transplant outdoors | Apr 8 – May 9 |
| Eggplant | Start seeds indoors | Feb 23 – Mar 24 |
| Eggplant | Transplant outdoors | Apr 8 – May 9 |
| Cucumbers | Sow outdoors | Apr 8 – Aug 14 |
| Summer squash | Sow outdoors | Mar 25 – May 9 |
| Winter squash & pumpkins | Sow outdoors | Apr 8 – May 9 |
| Snap beans | Sow outdoors | Mar 25 – Sep 6 |
| Sweet corn | Sow outdoors | Mar 25 – Aug 4 |
| Watermelon & cantaloupe | Sow outdoors | Apr 8 – May 9 |
| Okra | Sow outdoors | Apr 1 – Apr 24 |
| Peas | Sow outdoors (spring) | Feb 6 – Mar 24 |
| Potatoes | Plant outdoors (spring) | Feb 6 – Apr 8 |
| Onions | Start seeds indoors (spring) | Dec 26 – Jan 22 |
| Onions | Transplant outdoors (spring) | Feb 23 – Mar 24 |
| Broccoli | Start seeds indoors (spring) | Jan 19 – Feb 22 |
| Broccoli | Transplant outdoors (spring) | Feb 23 – Mar 24 |
| Broccoli | Start seeds indoors (fall) | Jul 25 – Aug 4 |
| Broccoli | Transplant outdoors (fall) | Aug 24 – Sep 4 |
| Cabbage | Start seeds indoors (spring) | Jan 9 – Feb 6 |
| Cabbage | Transplant outdoors (spring) | Feb 6 – Mar 9 |
| Cabbage | Start seeds indoors (fall) | Jul 15 – Aug 14 |
| Cabbage | Transplant outdoors (fall) | Aug 14 – Sep 14 |
| Leaf lettuce | Sow outdoors (spring) | Feb 6 – Apr 24 |
| Leaf lettuce | Sow outdoors (fall) | Aug 14 – Sep 30 |
| Spinach | Sow outdoors (spring) | Jan 30 – Mar 15 |
| Spinach | Sow outdoors (fall) | Aug 31 – Oct 5 |
| Radishes | Sow outdoors (spring) | Feb 6 – Mar 29 |
| Radishes | Sow outdoors (fall) | Aug 14 – Oct 15 |
| Kale | Sow outdoors (spring) | Feb 23 – Mar 15 |
| Kale | Sow outdoors (fall) | Aug 7 – Sep 14 |
| Carrots | Sow outdoors (spring) | Mar 9 – Apr 24 |
| Carrots | Sow outdoors (fall) | Jul 15 – Aug 30 |
| Garlic | Plant outdoors (fall) | Nov 14 – Dec 15 |
Where these dates come from
ZIP code 30421 is matched to the NOAA station Glennville 3Nw, GA, 26.5 km away, at 200 ft elevation (26 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Glennville 3Nw, GA (used) | 200 ft | Mar 9 | Nov 24 |
| Metter, GA | 120 ft | Mar 2 | Nov 27 |
| Baxley 5Nnw, GA | 213 ft | Mar 15 | Nov 18 |
| Brooklet 1 W, GA | 180 ft | Mar 7 | Nov 21 |
Frost dates near Collins
- Manassas, GA 30438 · last Mar 9, first Nov 24
- Cobbtown, GA 30420 · last Mar 2, first Nov 27
- Reidsville, GA 30499 · last Mar 9, first Nov 24
- Bellville, GA 30414 · last Mar 9, first Nov 24
- Hagan, GA 30429 · last Mar 9, first Nov 24
- Lyons, GA 30436 · last Mar 9, first Nov 24
- Claxton, GA 30417 · last Mar 9, first Nov 24
- Metter, GA 30439 · last Mar 2, first Nov 27
Frequently asked questions
- When is the last frost in Collins, GA?
- For ZIP code 30421, the average last spring frost (32°F) is March 9, based on NOAA 1991-2020 climate normals for the Glennville 3Nw, GA weather station. There is a 1-in-10 chance of a frost after March 30.
- When is the first frost in Collins, GA?
- The average first fall frost (32°F) is November 24. There is a 1-in-10 chance of frost by November 5, so tender plants are at risk from that point on.
- How long is the growing season in 30421?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 258 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.