Frost dates for 31760Irwinville, GA
The average last spring frost in Irwinville is March 2 and the average first fall frost is November 25, giving a typical growing season of about 268 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Mar 2
- Average first fall frost
- Nov 25
- Growing season
- 268 days
Safer after Mar 22 (1-in-10 risk)
Possible by Nov 6 (1-in-10 risk)
First frost typically in 22 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 25 · Mar 17 · Apr 4 | Oct 28 · Nov 11 · Nov 30 | 241 days | 100% |
| Frost / freeze (32°F) | Feb 4 · Mar 2 · Mar 22 | Nov 6 · Nov 25 · Dec 19 | 268 days | 100% |
| Hard freeze (28°F) | Jan 13 · Feb 13 · Mar 13 | Nov 18 · Dec 12 · Jan 12 | 302 days | 99% |
Planting calendar for Irwinville
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 5 |
| 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 15 |
| Summer squash | Sow outdoors | Mar 18 – May 2 |
| Winter squash & pumpkins | Sow outdoors | Apr 1 – May 2 |
| Snap beans | Sow outdoors | Mar 18 – Sep 7 |
| Sweet corn | Sow outdoors | Mar 18 – Aug 5 |
| 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 26 – Aug 5 |
| Broccoli | Transplant outdoors (fall) | Aug 25 – Sep 5 |
| Cabbage | Start seeds indoors (spring) | Jan 2 – Jan 30 |
| Cabbage | Transplant outdoors (spring) | Jan 30 – Mar 2 |
| Cabbage | Start seeds indoors (fall) | Jul 16 – Aug 15 |
| Cabbage | Transplant outdoors (fall) | Aug 15 – Sep 15 |
| Leaf lettuce | Sow outdoors (spring) | Jan 30 – Apr 17 |
| Leaf lettuce | Sow outdoors (fall) | Aug 15 – Oct 1 |
| Spinach | Sow outdoors (spring) | Jan 23 – Mar 8 |
| Spinach | Sow outdoors (fall) | Sep 1 – Oct 6 |
| Radishes | Sow outdoors (spring) | Jan 30 – Mar 22 |
| Radishes | Sow outdoors (fall) | Aug 15 – Oct 16 |
| Kale | Sow outdoors (spring) | Feb 16 – Mar 8 |
| Kale | Sow outdoors (fall) | Aug 8 – Sep 15 |
| Carrots | Sow outdoors (spring) | Mar 2 – Apr 17 |
| Carrots | Sow outdoors (fall) | Jul 16 – Aug 31 |
| Garlic | Plant outdoors (fall) | Nov 15 – Dec 16 |
Where these dates come from
ZIP code 31760 is matched to the NOAA station Fitzgerald, GA, 14.9 km away, at 370 ft elevation (39 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Fitzgerald, GA (used) | 370 ft | Mar 2 | Nov 25 |
| Ashburn 3 Ene, GA | 435 ft | Mar 11 | Nov 20 |
| Tifton, GA | 380 ft | Mar 11 | Nov 19 |
| Pridgen, GA | 300 ft | Mar 12 | Nov 17 |
Frost dates near Irwinville
- Rebecca, GA 31783 · last Mar 11, first Nov 20
- Fitzgerald, GA 31750 · last Mar 2, first Nov 25
- Mystic, GA 31769 · last Mar 2, first Nov 25
- Ocilla, GA 31774 · last Mar 11, first Nov 19
- Sycamore, GA 31790 · last Mar 11, first Nov 20
- Chula, GA 31733 · last Mar 11, first Nov 19
- Ashburn, GA 31714 · last Mar 11, first Nov 20
- Rochelle, GA 31079 · last Mar 13, first Nov 14
Frequently asked questions
- When is the last frost in Irwinville, GA?
- For ZIP code 31760, the average last spring frost (32°F) is March 2, based on NOAA 1991-2020 climate normals for the Fitzgerald, GA weather station. There is a 1-in-10 chance of a frost after March 22.
- When is the first frost in Irwinville, GA?
- The average first fall frost (32°F) is November 25. There is a 1-in-10 chance of frost by November 6, so tender plants are at risk from that point on.
- How long is the growing season in 31760?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 268 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.