USDA Hardiness Zone 8b
Frost Dates for 30810 — Gibson, Georgia
NOAA 1991–2020 normals from Warrenton, GA (490 ft), 12 miles north.
Updated
In Gibson, the last spring frost (32°F) is around March 29 in half of years and has passed by April 14 in nine years out of ten. The first fall frost comes around November 7, as early as October 25 one year in ten, leaving a typical freeze-free season of 225 days (NOAA, Warrenton, GA).
- Last spring frost
- March 29
- First fall frost
- November 7
- Growing season
- 225 days
- Hardiness zone
- 8b
50% probability
50% probability
freeze-free, 50%
15 to 20°F (-9.4 to -6.7°C) coldest night
- First snow
- Rare
- Last snow
- Rare
- Winters with snow
- 10%
- Snow per year
- 0.3"
median, 1991–2020
median, 1991–2020
2 of 20 observed
NOAA normal
Frost risk by date in Gibson
Half of springs at Warrenton, GA see their last 32°F night by March 29; only one in ten is past it by March 8, and one in ten still has one after April 14. Planting tender crops after April 5 leaves a 30% risk of a frost on them, after April 8 20%, and after April 14 10%. The 16 days between the even-odds date and the one-in-ten date is narrower than at 70% of the 127 Georgia stations behind this site's ZIP pages.
In fall the first 32°F night comes by November 7 in half of years, as early as October 25 one year in ten, and holds off past November 26 one year in ten. A hard freeze of 28°F follows 15 days later, around November 22; in spring the one-in-ten date for 28°F is April 2, 12 days before the 32°F one. The freeze-free season lasts 225 days in a typical year, shorter than at 68% of the 127 Georgia stations; it reaches 252 days one year in ten and falls short of 204 one year in ten. On average 58 nights a year drop to 32°F or below. Nights of 36°F, when frost can still settle on leaves in low, open spots, continue 10 days longer, to about April 8, and return around October 29. Nights of 24°F, cold enough to damage hardier plants, come in 100% of winters and 16°F in 59%.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Mar 23 | Mar 30 | Apr 2 | Apr 5 | Apr 8 | Apr 12 | Apr 15 | Apr 19 | Apr 24 |
| 32°F | Mar 8 | Mar 15 | Mar 20 | Mar 25 | Mar 29 | Apr 1 | Apr 5 | Apr 8 | Apr 14 |
| 28°F | Feb 15 | Feb 25 | Mar 3 | Mar 7 | Mar 13 | Mar 17 | Mar 21 | Mar 27 | Apr 2 |
| 24°F | Jan 28 | Feb 5 | Feb 12 | Feb 18 | Feb 24 | Feb 28 | Mar 6 | Mar 12 | Mar 18 |
| 20°F90% of yrs | Jan 5 | Jan 17 | Jan 25 | Jan 31 | Feb 4 | Feb 9 | Feb 17 | Feb 27 | Mar 6 |
| 16°F59% of yrs | Dec 29 | Jan 5 | Jan 13 | Jan 18 | Jan 24 | Jan 29 | Feb 2 | Feb 7 | Feb 21 |
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 17 | Oct 21 | Oct 24 | Oct 26 | Oct 29 | Nov 1 | Nov 2 | Nov 6 | Nov 11 |
| 32°F | Oct 25 | Oct 31 | Nov 2 | Nov 5 | Nov 7 | Nov 10 | Nov 15 | Nov 19 | Nov 26 |
| 28°F | Nov 5 | Nov 9 | Nov 13 | Nov 18 | Nov 22 | Nov 26 | Dec 1 | Dec 5 | Dec 15 |
| 24°F | Nov 17 | Nov 23 | Nov 30 | Dec 3 | Dec 8 | Dec 16 | Dec 26 | Jan 1 | Jan 10 |
| 20°F90% of yrs | Dec 1 | Dec 8 | Dec 18 | Dec 26 | Jan 1 | Jan 4 | Jan 10 | Jan 18 | Feb 1 |
| 16°F59% of yrs | Dec 13 | Dec 24 | Dec 31 | Jan 4 | Jan 8 | Jan 14 | Jan 20 | Jan 27 | Feb 6 |
Freeze probabilities 1991–2020 at Warrenton, GA, from NOAA NCEI U.S. Climate Normals. Where a temperature is reached in fewer than 99.5% of years, the dates describe only the years that reach it. Not a forecast.
Frost risk on any date in 30810 →Compare Gibson with another place →
Weather by month in Gibson
July is the warmest month at Warrenton, GA, averaging 91°F by day and 69°F at night; January is the coldest at 56°F and 33°F. A freezing night is all but certain in every month from November to March (a 90% chance or more). From May to September the chance of a 32°F night stays under 10% each month. In spring, April still brings one in 42% of years.
Warmth for growing adds up to 5,228 growing degree days a year (base 50°F), fewer than at 59% of the 127 Georgia stations. 40% of them (2,071) have built up by the end of June, and July adds the most, 935.
| Month | High °F | Low °F | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|
| Jan | 56 | 33 | 100% | 16 | 56 |
| Feb | 59 | 35 | 99% | 12 | 63 |
| Mar | 67 | 41 | 91% | 7 | 187 |
| Apr | 75 | 48 | 42% | 1 | 356 |
| May | 82 | 57 | 0% | 0 | 609 |
| Jun | 88 | 65 | 0% | 0 | 799 |
| Jul | 91 | 69 | 0% | 0 | 935 |
| Aug | 90 | 68 | 0% | 0 | 894 |
| Sep | 84 | 62 | 0% | 0 | 699 |
| Oct | 75 | 51 | 22% | 1 | 409 |
| Nov | 66 | 40 | 92% | 7 | 152 |
| Dec | 58 | 35 | 99% | 14 | 69 |
Monthly normals 1991–2020 at Warrenton, GA (490 ft), NOAA NCEI. "32°F night": chance of at least one in the month. GDD: growing degree days, base 50°F.
Compared with the next station
The nearest other station, Thomson 1.5SE, GA, 16 miles north of Gibson, has a last frost 15 days earlier (March 14), a first frost 10 days later (November 17), a season 27 days longer.
When it snows in Gibson, Georgia
Measurable snow is rare here: only 2 of 20 winters from 1991 to 2020 recorded 0.1 inch or more at Gibson, GA, 1.1 miles away, so there is no typical first-snow date to plan around.
Planting calendar for 30810
| When | What to do |
|---|---|
| January 18 – February 1 | Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out. |
| February 1 – February 15 | Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early. |
| March 1 – March 15 | Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil. |
| March 29 onward | Transplant tomatoes, peppers, basil, squash, cucumbersThe average last freeze has passed — still watch the actual forecast. |
| by August 15 | Sow the autumn crop of carrots, beets and brassicasThey need about twelve weeks to size up before growth stops. |
| by October 24 | Harvest tender crops, or be ready to cover themA first freeze two weeks early is well within normal variation. |
| November 7 onward | Plant garlic, mulch beds, lift tender bulbsGarlic wants a cold spell; bare soil loses structure over winter. |
The weeks before and after the 50% dates are general rules of thumb, not NOAA figures; a seed packet gives the timing for each variety.
Where these figures come from
ZIP 30810 is 12 miles from Warrenton, GA, which stands at 490 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 1 other ZIP code shares the station; its figures are presented in full for 30828 (Warrenton). The 2023 USDA Plant Hardiness Zone Map lists ZIP 30810 in zone 8b, the band where the coldest night of the year averaged 15 to 20°F (-9.4 to -6.7°C) over 1991–2020; a zone describes winter lows, not frost dates.
Hardiness zone and temperature range: USDA Plant Hardiness Zone Map 2023 (USDA-ARS, Oregon State University), ZIP-code listing, unchanged. °C converted from °F by this site.
Thirty-year averages, not a forecast: check the forecast before planting out. How stations are matched and which pages are offered to search engines: methodology.