USDA Hardiness Zone 8a
Frost Dates for 30185 — Whitesburg, Georgia
NOAA 1991–2020 normals from Newnan 7 WNW, GA (795 ft), 8 miles south.
Updated
In Whitesburg, the last spring frost (32°F) is around April 3 in half of years and has passed by April 18 in nine years out of ten. The first fall frost comes around November 2, as early as October 22 one year in ten, leaving a typical freeze-free season of 214 days (NOAA, Newnan 7 WNW, GA).
- Last spring frost
- April 3
- First fall frost
- November 2
- Growing season
- 214 days
- Hardiness zone
- 8a
50% probability
50% probability
freeze-free, 50%
10 to 15°F (-12.2 to -9.4°C) coldest night
- First snow
- Rare
- Last snow
- Rare
- Winters with snow
- 20%
- Snow per year
- 0.6"
median, 1991–2020
median, 1991–2020
5 of 25 observed
NOAA normal
Frost risk by date in Whitesburg
Half of springs at Newnan 7 WNW, GA see their last 32°F night by April 3; only one in ten is past it by March 16, and one in ten still has one after April 18. Planting tender crops after April 9 leaves a 30% risk of a frost on them, after April 13 20%, and after April 18 10%. The 15 days between the even-odds date and the one-in-ten date is narrower than at 83% of the 127 Georgia stations behind this site's ZIP pages.
In fall the first 32°F night comes by November 2 in half of years, as early as October 22 one year in ten, and holds off past November 18 one year in ten. A hard freeze of 28°F follows 13 days later, around November 15; in spring the one-in-ten date for 28°F is April 8, 10 days before the 32°F one. The freeze-free season lasts 214 days in a typical year, shorter than at 85% of the 127 Georgia stations; it reaches 237 days one year in ten and falls short of 193 one year in ten. On average 61 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 11 days longer, to about April 14, and return around October 25. Nights of 24°F, cold enough to damage hardier plants, come in 100% of winters and 16°F in 83%.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Mar 31 | Apr 4 | Apr 8 | Apr 11 | Apr 14 | Apr 18 | Apr 21 | Apr 26 | May 1 |
| 32°F | Mar 16 | Mar 22 | Mar 27 | Mar 31 | Apr 3 | Apr 6 | Apr 9 | Apr 13 | Apr 18 |
| 28°F | Feb 28 | Mar 9 | Mar 14 | Mar 18 | Mar 21 | Mar 25 | Mar 29 | Apr 2 | Apr 8 |
| 24°F | Feb 10 | Feb 20 | Feb 27 | Mar 3 | Mar 9 | Mar 13 | Mar 17 | Mar 20 | Mar 27 |
| 20°F98% of yrs | Jan 19 | Jan 29 | Feb 4 | Feb 12 | Feb 19 | Feb 26 | Mar 3 | Mar 10 | Mar 16 |
| 16°F83% of yrs | Jan 2 | Jan 12 | Jan 20 | Jan 27 | Jan 31 | Feb 6 | Feb 14 | Feb 27 | Mar 6 |
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 13 | Oct 18 | Oct 21 | Oct 23 | Oct 25 | Oct 28 | Oct 30 | Nov 1 | Nov 5 |
| 32°F | Oct 22 | Oct 26 | Oct 30 | Nov 1 | Nov 2 | Nov 5 | Nov 7 | Nov 11 | Nov 18 |
| 28°F | Nov 1 | Nov 4 | Nov 8 | Nov 11 | Nov 15 | Nov 18 | Nov 22 | Nov 28 | Dec 3 |
| 24°F | Nov 9 | Nov 15 | Nov 20 | Nov 26 | Dec 1 | Dec 3 | Dec 7 | Dec 17 | Dec 29 |
| 20°F98% of yrs | Nov 22 | Dec 1 | Dec 5 | Dec 13 | Dec 22 | Dec 27 | Jan 1 | Jan 7 | Jan 17 |
| 16°F83% of yrs | Dec 8 | Dec 20 | Dec 27 | Jan 1 | Jan 4 | Jan 8 | Jan 15 | Jan 22 | Feb 1 |
Freeze probabilities 1991–2020 at Newnan 7 WNW, 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 30185 →Compare Whitesburg with another place →
Weather by month in Whitesburg
July is the warmest month at Newnan 7 WNW, GA, averaging 90°F by day and 68°F at night; January is the coldest at 54°F and 31°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 58% of years.
Warmth for growing adds up to 4,984 growing degree days a year (base 50°F), fewer than at 73% of the 127 Georgia stations. 39% of them (1,957) have built up by the end of June, and July adds the most, 897. Precipitation totals 52.6 inches a year, most in March (5.4") and least in October (3.0"); May to September bring 40% of it.
| Month | High °F | Low °F | Precip. in | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|---|
| Jan | 54 | 31 | 4.9 | 100% | 17 | 37 |
| Feb | 60 | 34 | 5.1 | 100% | 12 | 61 |
| Mar | 67 | 39 | 5.4 | 96% | 7 | 167 |
| Apr | 75 | 47 | 4.2 | 58% | 1 | 337 |
| May | 81 | 56 | 3.7 | 0% | 0 | 580 |
| Jun | 87 | 65 | 3.9 | 0% | 0 | 775 |
| Jul | 90 | 68 | 4.7 | 0% | 0 | 897 |
| Aug | 89 | 68 | 4.6 | 0% | 0 | 877 |
| Sep | 84 | 62 | 3.9 | 0% | 0 | 682 |
| Oct | 75 | 49 | 3.0 | 38% | 1 | 379 |
| Nov | 66 | 39 | 4.1 | 97% | 7 | 138 |
| Dec | 57 | 33 | 5.1 | 100% | 16 | 54 |
Monthly normals 1991–2020 at Newnan 7 WNW, GA (795 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, Carrollton, GA, 11 miles northwest of Whitesburg and 200 feet higher, has a last frost 6 days earlier (March 28), a first frost 3 days later (November 5), a season 8 days longer.
When it snows in Whitesburg, Georgia
Measurable snow is rare here: only 5 of 25 winters from 1991 to 2020 recorded 0.1 inch or more at Carrollton, GA, 10.9 miles away, so there is no typical first-snow date to plan around.
Planting calendar for 30185
| When | What to do |
|---|---|
| January 23 – February 6 | Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out. |
| February 6 – February 20 | Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early. |
| March 6 – March 20 | Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil. |
| April 3 onward | Transplant tomatoes, peppers, basil, squash, cucumbersThe average last freeze has passed — still watch the actual forecast. |
| by August 10 | Sow the autumn crop of carrots, beets and brassicasThey need about twelve weeks to size up before growth stops. |
| by October 19 | Harvest tender crops, or be ready to cover themA first freeze two weeks early is well within normal variation. |
| November 2 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 30185 is 8 miles from Newnan 7 WNW, GA, which stands at 795 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 2 other ZIP codes share the station; its figures are presented in full for 30263 (Newnan). The 2023 USDA Plant Hardiness Zone Map lists ZIP 30185 in zone 8a, the band where the coldest night of the year averaged 10 to 15°F (-12.2 to -9.4°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.