Frost dates for 30172Shannon, GA
The average last spring frost in Shannon is March 29 and the average first fall frost is November 3, giving a typical growing season of about 219 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Mar 29
- Average first fall frost
- Nov 3
- Growing season
- 219 days
Safer after Apr 15 (1-in-10 risk)
Possible by Oct 22 (1-in-10 risk)
First frost typically in 0 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 25 · Apr 11 · Apr 28 | Oct 12 · Oct 25 · Nov 6 | 195 days | 100% |
| Frost / freeze (32°F) | Mar 12 · Mar 29 · Apr 15 | Oct 22 · Nov 3 · Nov 18 | 219 days | 100% |
| Hard freeze (28°F) | Feb 25 · Mar 16 · Apr 3 | Oct 30 · Nov 14 · Dec 2 | 245 days | 100% |
Planting calendar for Shannon
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 26 – May 4 |
| Tomatoes | Transplant outdoors | Apr 14 – Jul 14 |
| Peppers | Start seeds indoors | Feb 26 – Mar 29 |
| Peppers | Transplant outdoors | Apr 28 – May 29 |
| Eggplant | Start seeds indoors | Mar 15 – Apr 13 |
| Eggplant | Transplant outdoors | Apr 28 – May 29 |
| Cucumbers | Sow outdoors | Apr 28 – Jul 24 |
| Summer squash | Sow outdoors | Apr 14 – May 29 |
| Winter squash & pumpkins | Sow outdoors | Apr 28 – May 29 |
| Snap beans | Sow outdoors | Apr 14 – Aug 16 |
| Sweet corn | Sow outdoors | Apr 14 – Jul 14 |
| Watermelon & cantaloupe | Sow outdoors | Apr 28 – May 29 |
| Okra | Sow outdoors | Apr 21 – May 14 |
| Peas | Sow outdoors (spring) | Feb 26 – Apr 13 |
| Potatoes | Plant outdoors (spring) | Feb 26 – Apr 28 |
| Onions | Start seeds indoors (spring) | Jan 15 – Feb 11 |
| Onions | Transplant outdoors (spring) | Mar 15 – Apr 13 |
| Broccoli | Start seeds indoors (spring) | Feb 8 – Mar 14 |
| Broccoli | Transplant outdoors (spring) | Mar 15 – Apr 13 |
| Broccoli | Start seeds indoors (fall) | Jul 4 – Jul 14 |
| Broccoli | Transplant outdoors (fall) | Aug 3 – Aug 14 |
| Cabbage | Start seeds indoors (spring) | Jan 29 – Feb 26 |
| Cabbage | Transplant outdoors (spring) | Feb 26 – Mar 29 |
| Cabbage | Start seeds indoors (fall) | Jun 24 – Jul 24 |
| Cabbage | Transplant outdoors (fall) | Jul 24 – Aug 24 |
| Leaf lettuce | Sow outdoors (spring) | Feb 26 – May 14 |
| Leaf lettuce | Sow outdoors (fall) | Jul 24 – Sep 9 |
| Spinach | Sow outdoors (spring) | Feb 19 – Apr 4 |
| Spinach | Sow outdoors (fall) | Aug 10 – Sep 14 |
| Radishes | Sow outdoors (spring) | Feb 26 – Apr 18 |
| Radishes | Sow outdoors (fall) | Jul 24 – Sep 24 |
| Kale | Sow outdoors (spring) | Mar 15 – Apr 4 |
| Kale | Sow outdoors (fall) | Jul 17 – Aug 24 |
| Carrots | Sow outdoors (spring) | Mar 29 – May 14 |
| Carrots | Sow outdoors (fall) | Jun 24 – Aug 9 |
| Garlic | Plant outdoors (fall) | Oct 24 – Nov 24 |
Where these dates come from
ZIP code 30172 is matched to the NOAA station Rome R B Russell Ap, GA, 6.9 km away, at 639 ft elevation (198 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Rome R B Russell Ap, GA (used) | 639 ft | Mar 29 | Nov 3 |
| Rome, GA | 685 ft | Apr 1 | Nov 3 |
| Summerville, GA | 639 ft | Apr 7 | Oct 30 |
| Cedartown, GA | 785 ft | Mar 30 | Nov 4 |
Frost dates near Shannon
- Coosa, GA 30129 · last Mar 29, first Nov 3
- Rome, GA 30163 · last Mar 29, first Nov 3
- Mount Berry, GA 30149 · last Apr 1, first Nov 3
- Armuchee, GA 30105 · last Mar 29, first Nov 3
- Lyerly, GA 30730 · last Apr 7, first Oct 30
- Lindale, GA 30147 · last Apr 1, first Nov 3
- Summerville, GA 30747 · last Apr 7, first Oct 30
- Plainville, GA 30733 · last Mar 29, first Nov 3
Frequently asked questions
- When is the last frost in Shannon, GA?
- For ZIP code 30172, the average last spring frost (32°F) is March 29, based on NOAA 1991-2020 climate normals for the Rome R B Russell Ap, GA weather station. There is a 1-in-10 chance of a frost after April 15.
- When is the first frost in Shannon, GA?
- The average first fall frost (32°F) is November 3. There is a 1-in-10 chance of frost by October 22, so tender plants are at risk from that point on.
- How long is the growing season in 30172?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 219 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.