Frost dates for 30665Siloam, GA
The average last spring frost in Siloam is March 27 and the average first fall frost is November 8, giving a typical growing season of about 226 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Mar 27
- Average first fall frost
- Nov 8
- Growing season
- 226 days
Safer after Apr 13 (1-in-10 risk)
Possible by Oct 25 (1-in-10 risk)
First frost typically in 5 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 23 · Apr 9 · Apr 28 | Oct 16 · Oct 30 · Nov 12 | 203 days | 100% |
| Frost / freeze (32°F) | Mar 6 · Mar 27 · Apr 13 | Oct 25 · Nov 8 · Nov 26 | 226 days | 100% |
| Hard freeze (28°F) | Feb 17 · Mar 12 · Mar 31 | Nov 4 · Nov 23 · Dec 17 | 256 days | 100% |
Planting calendar for Siloam
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 24 – May 2 |
| Tomatoes | Transplant outdoors | Apr 12 – Jul 19 |
| Peppers | Start seeds indoors | Feb 24 – Mar 27 |
| Peppers | Transplant outdoors | Apr 26 – May 27 |
| Eggplant | Start seeds indoors | Mar 13 – Apr 11 |
| Eggplant | Transplant outdoors | Apr 26 – May 27 |
| Cucumbers | Sow outdoors | Apr 26 – Jul 29 |
| Summer squash | Sow outdoors | Apr 12 – May 27 |
| Winter squash & pumpkins | Sow outdoors | Apr 26 – May 27 |
| Snap beans | Sow outdoors | Apr 12 – Aug 21 |
| Sweet corn | Sow outdoors | Apr 12 – Jul 19 |
| Watermelon & cantaloupe | Sow outdoors | Apr 26 – May 27 |
| Okra | Sow outdoors | Apr 19 – May 12 |
| Peas | Sow outdoors (spring) | Feb 24 – Apr 11 |
| Potatoes | Plant outdoors (spring) | Feb 24 – Apr 26 |
| Onions | Start seeds indoors (spring) | Jan 13 – Feb 9 |
| Onions | Transplant outdoors (spring) | Mar 13 – Apr 11 |
| Broccoli | Start seeds indoors (spring) | Feb 6 – Mar 12 |
| Broccoli | Transplant outdoors (spring) | Mar 13 – Apr 11 |
| Broccoli | Start seeds indoors (fall) | Jul 9 – Jul 19 |
| Broccoli | Transplant outdoors (fall) | Aug 8 – Aug 19 |
| Cabbage | Start seeds indoors (spring) | Jan 27 – Feb 24 |
| Cabbage | Transplant outdoors (spring) | Feb 24 – Mar 27 |
| Cabbage | Start seeds indoors (fall) | Jun 29 – Jul 29 |
| Cabbage | Transplant outdoors (fall) | Jul 29 – Aug 29 |
| Leaf lettuce | Sow outdoors (spring) | Feb 24 – May 12 |
| Leaf lettuce | Sow outdoors (fall) | Jul 29 – Sep 14 |
| Spinach | Sow outdoors (spring) | Feb 17 – Apr 2 |
| Spinach | Sow outdoors (fall) | Aug 15 – Sep 19 |
| Radishes | Sow outdoors (spring) | Feb 24 – Apr 16 |
| Radishes | Sow outdoors (fall) | Jul 29 – Sep 29 |
| Kale | Sow outdoors (spring) | Mar 13 – Apr 2 |
| Kale | Sow outdoors (fall) | Jul 22 – Aug 29 |
| Carrots | Sow outdoors (spring) | Mar 27 – May 12 |
| Carrots | Sow outdoors (fall) | Jun 29 – Aug 14 |
| Garlic | Plant outdoors (fall) | Oct 29 – Nov 29 |
Where these dates come from
ZIP code 30665 is matched to the NOAA station Siloam 3N, GA, 3 km away, at 695 ft elevation (14 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Siloam 3N, GA (used) | 695 ft | Mar 27 | Nov 8 |
| Lexington, GA | 726 ft | Mar 31 | Nov 6 |
| Watkinsville 5 Sse, GA | 741 ft | Mar 24 | Nov 12 |
| Washington 2 Ese, GA | 620 ft | Mar 22 | Nov 13 |
Frost dates near Siloam
- White Plains, GA 30678 · last Mar 27, first Nov 8
- Greensboro, GA 30642 · last Mar 27, first Nov 8
- Union Point, GA 30669 · last Mar 27, first Nov 8
- Crawfordville, GA 30631 · last Mar 27, first Nov 8
- Maxeys, GA 30671 · last Mar 27, first Nov 8
- Buckhead, GA 30625 · last Mar 27, first Nov 8
- Stephens, GA 30667 · last Mar 27, first Nov 8
- Sharon, GA 30664 · last Mar 22, first Nov 13
Frequently asked questions
- When is the last frost in Siloam, GA?
- For ZIP code 30665, the average last spring frost (32°F) is March 27, based on NOAA 1991-2020 climate normals for the Siloam 3N, GA weather station. There is a 1-in-10 chance of a frost after April 13.
- When is the first frost in Siloam, GA?
- The average first fall frost (32°F) is November 8. There is a 1-in-10 chance of frost by October 25, so tender plants are at risk from that point on.
- How long is the growing season in 30665?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 226 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.