Frost dates for 30623Bostwick, GA
The average last spring frost in Bostwick is March 24 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 24
- Average first fall frost
- Nov 12
- Growing season
- 234 days
Safer after Apr 12 (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 20 · Apr 7 · Apr 22 | Oct 18 · Nov 1 · Nov 16 | 208 days | 100% |
| Frost / freeze (32°F) | Mar 1 · Mar 24 · Apr 12 | Oct 31 · Nov 12 · Dec 2 | 234 days | 100% |
| Hard freeze (28°F) | Feb 6 · Mar 5 · Mar 28 | Nov 10 · Nov 28 · Dec 25 | 267 days | 100% |
Planting calendar for Bostwick
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 21 – Apr 29 |
| Tomatoes | Transplant outdoors | Apr 9 – Jul 23 |
| Peppers | Start seeds indoors | Feb 21 – Mar 24 |
| Peppers | Transplant outdoors | Apr 23 – May 24 |
| Eggplant | Start seeds indoors | Mar 10 – Apr 8 |
| Eggplant | Transplant outdoors | Apr 23 – May 24 |
| Cucumbers | Sow outdoors | Apr 23 – Aug 2 |
| Summer squash | Sow outdoors | Apr 9 – May 24 |
| Winter squash & pumpkins | Sow outdoors | Apr 23 – May 24 |
| Snap beans | Sow outdoors | Apr 9 – Aug 25 |
| Sweet corn | Sow outdoors | Apr 9 – Jul 23 |
| Watermelon & cantaloupe | Sow outdoors | Apr 23 – May 24 |
| Okra | Sow outdoors | Apr 16 – May 9 |
| Peas | Sow outdoors (spring) | Feb 21 – Apr 8 |
| Potatoes | Plant outdoors (spring) | Feb 21 – Apr 23 |
| Onions | Start seeds indoors (spring) | Jan 10 – Feb 6 |
| Onions | Transplant outdoors (spring) | Mar 10 – Apr 8 |
| Broccoli | Start seeds indoors (spring) | Feb 3 – Mar 9 |
| Broccoli | Transplant outdoors (spring) | Mar 10 – Apr 8 |
| Broccoli | Start seeds indoors (fall) | Jul 13 – Jul 23 |
| Broccoli | Transplant outdoors (fall) | Aug 12 – Aug 23 |
| Cabbage | Start seeds indoors (spring) | Jan 24 – Feb 21 |
| Cabbage | Transplant outdoors (spring) | Feb 21 – Mar 24 |
| Cabbage | Start seeds indoors (fall) | Jul 3 – Aug 2 |
| Cabbage | Transplant outdoors (fall) | Aug 2 – Sep 2 |
| Leaf lettuce | Sow outdoors (spring) | Feb 21 – May 9 |
| Leaf lettuce | Sow outdoors (fall) | Aug 2 – Sep 18 |
| Spinach | Sow outdoors (spring) | Feb 14 – Mar 30 |
| Spinach | Sow outdoors (fall) | Aug 19 – Sep 23 |
| Radishes | Sow outdoors (spring) | Feb 21 – Apr 13 |
| Radishes | Sow outdoors (fall) | Aug 2 – Oct 3 |
| Kale | Sow outdoors (spring) | Mar 10 – Mar 30 |
| Kale | Sow outdoors (fall) | Jul 26 – Sep 2 |
| Carrots | Sow outdoors (spring) | Mar 24 – May 9 |
| Carrots | Sow outdoors (fall) | Jul 3 – Aug 18 |
| Garlic | Plant outdoors (fall) | Nov 2 – Dec 3 |
Where these dates come from
ZIP code 30623 is matched to the NOAA station Watkinsville 5 Sse, GA, 12.6 km away, at 741 ft elevation (20 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Watkinsville 5 Sse, GA (used) | 741 ft | Mar 24 | Nov 12 |
| U Of Ga Plt Sci, GA | 840 ft | Mar 27 | Nov 8 |
| Winder 4S, GA | 889 ft | Apr 3 | Nov 7 |
| Athens Ben Epps Ap, GA | 785 ft | Mar 23 | Nov 10 |
Frost dates near Bostwick
- High Shoals, GA 30645 · last Mar 24, first Nov 12
- Good Hope, GA 30641 · last Mar 27, first Nov 8
- Bishop, GA 30621 · last Mar 24, first Nov 12
- Farmington, GA 30638 · last Mar 24, first Nov 12
- Rutledge, GA 30663 · last Mar 22, first Nov 14
- Watkinsville, GA 30677 · last Mar 24, first Nov 12
- Madison, GA 30650 · last Mar 24, first Nov 12
- Social Circle, GA 30025 · last Mar 22, first Nov 14
Frequently asked questions
- When is the last frost in Bostwick, GA?
- For ZIP code 30623, the average last spring frost (32°F) is March 24, based on NOAA 1991-2020 climate normals for the Watkinsville 5 Sse, GA weather station. There is a 1-in-10 chance of a frost after April 12.
- When is the first frost in Bostwick, 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 30623?
- 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.