Frost dates for 30447Norristown, GA
The average last spring frost in Norristown is March 14 and the average first fall frost is November 13, giving a typical growing season of about 247 days. Dates are based on NOAA 1991-2020 climate normals.
- Average last spring frost
- Mar 14
- Average first fall frost
- Nov 13
- Growing season
- 247 days
Safer after Apr 1 (1-in-10 risk)
Possible by Nov 1 (1-in-10 risk)
First frost typically in 10 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 9 · Mar 29 · Apr 14 | Oct 22 · Nov 3 · Nov 18 | 221 days | 100% |
| Frost / freeze (32°F) | Feb 20 · Mar 14 · Apr 1 | Nov 1 · Nov 13 · Dec 2 | 247 days | 100% |
| Hard freeze (28°F) | Jan 31 · Feb 26 · Mar 18 | Nov 8 · Nov 27 · Dec 24 | 275 days | 100% |
Planting calendar for Norristown
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 11 – Apr 19 |
| Tomatoes | Transplant outdoors | Mar 30 – Jul 24 |
| Peppers | Start seeds indoors | Feb 11 – Mar 14 |
| Peppers | Transplant outdoors | Apr 13 – May 14 |
| Eggplant | Start seeds indoors | Feb 28 – Mar 29 |
| Eggplant | Transplant outdoors | Apr 13 – May 14 |
| Cucumbers | Sow outdoors | Apr 13 – Aug 3 |
| Summer squash | Sow outdoors | Mar 30 – May 14 |
| Winter squash & pumpkins | Sow outdoors | Apr 13 – May 14 |
| Snap beans | Sow outdoors | Mar 30 – Aug 26 |
| Sweet corn | Sow outdoors | Mar 30 – Jul 24 |
| Watermelon & cantaloupe | Sow outdoors | Apr 13 – May 14 |
| Okra | Sow outdoors | Apr 6 – Apr 29 |
| Peas | Sow outdoors (spring) | Feb 11 – Mar 29 |
| Potatoes | Plant outdoors (spring) | Feb 11 – Apr 13 |
| Onions | Start seeds indoors (spring) | Dec 31 – Jan 27 |
| Onions | Transplant outdoors (spring) | Feb 28 – Mar 29 |
| Broccoli | Start seeds indoors (spring) | Jan 24 – Feb 27 |
| Broccoli | Transplant outdoors (spring) | Feb 28 – Mar 29 |
| Broccoli | Start seeds indoors (fall) | Jul 14 – Jul 24 |
| Broccoli | Transplant outdoors (fall) | Aug 13 – Aug 24 |
| Cabbage | Start seeds indoors (spring) | Jan 14 – Feb 11 |
| Cabbage | Transplant outdoors (spring) | Feb 11 – Mar 14 |
| Cabbage | Start seeds indoors (fall) | Jul 4 – Aug 3 |
| Cabbage | Transplant outdoors (fall) | Aug 3 – Sep 3 |
| Leaf lettuce | Sow outdoors (spring) | Feb 11 – Apr 29 |
| Leaf lettuce | Sow outdoors (fall) | Aug 3 – Sep 19 |
| Spinach | Sow outdoors (spring) | Feb 4 – Mar 20 |
| Spinach | Sow outdoors (fall) | Aug 20 – Sep 24 |
| Radishes | Sow outdoors (spring) | Feb 11 – Apr 3 |
| Radishes | Sow outdoors (fall) | Aug 3 – Oct 4 |
| Kale | Sow outdoors (spring) | Feb 28 – Mar 20 |
| Kale | Sow outdoors (fall) | Jul 27 – Sep 3 |
| Carrots | Sow outdoors (spring) | Mar 14 – Apr 29 |
| Carrots | Sow outdoors (fall) | Jul 4 – Aug 19 |
| Garlic | Plant outdoors (fall) | Nov 3 – Dec 4 |
Where these dates come from
ZIP code 30447 is matched to the NOAA station Dublin, GA, 39.7 km away, at 230 ft elevation (6 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Dublin, GA (used) | 230 ft | Mar 14 | Nov 13 |
| Kite, GA | 311 ft | Mar 21 | Nov 8 |
| Dublin 2, GA | 200 ft | Mar 14 | Nov 16 |
| Metter, GA | 120 ft | Mar 2 | Nov 27 |
Frost dates near Norristown
- Adrian, GA 31002 · last Mar 21, first Nov 8
- Nunez, GA 30448 · last Mar 18, first Nov 11
- Swainsboro, GA 30401 · last Mar 18, first Nov 11
- Soperton, GA 30457 · last Mar 14, first Nov 13
- Tarrytown, GA 30470 · last Mar 14, first Nov 13
- Kite, GA 31049 · last Mar 21, first Nov 8
- Stillmore, GA 30464 · last Mar 2, first Nov 27
- Rockledge, GA 30454 · last Mar 14, first Nov 13
Frequently asked questions
- When is the last frost in Norristown, GA?
- For ZIP code 30447, the average last spring frost (32°F) is March 14, based on NOAA 1991-2020 climate normals for the Dublin, GA weather station. There is a 1-in-10 chance of a frost after April 1.
- When is the first frost in Norristown, GA?
- The average first fall frost (32°F) is November 13. There is a 1-in-10 chance of frost by November 1, so tender plants are at risk from that point on.
- How long is the growing season in 30447?
- In half of years, the frost-free season (between the last and first 32°F frost) is at least 247 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.