USDA Hardiness Zone 8a
Frost Dates for 30730 — Lyerly, Georgia
NOAA 1991–2020 normals from Summerville, GA (639 ft), 6 miles north.
Updated
In Lyerly, the last spring frost (32°F) is around April 7 in half of years and has passed by April 23 in nine years out of ten. The first fall frost comes around October 30, as early as October 18 one year in ten, leaving a typical freeze-free season of 204 days (NOAA, Summerville, GA).
- Last spring frost
- April 7
- First fall frost
- October 30
- Growing season
- 204 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
- 25%
- Snow per year
- 0.3"
median, 1991–2020
median, 1991–2020
6 of 24 observed
NOAA normal
Frost risk by date in Lyerly
Half of springs at Summerville, GA see their last 32°F night by April 7; only one in ten is past it by March 20, and one in ten still has one after April 23. Planting tender crops after April 14 leaves a 30% risk of a frost on them, after April 18 20%, and after April 23 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 October 30 in half of years, as early as October 18 one year in ten, and holds off past November 10 one year in ten. A hard freeze of 28°F follows 8 days later, around November 7; in spring the one-in-ten date for 28°F is April 11, 12 days before the 32°F one. The freeze-free season lasts 204 days in a typical year, shorter than at 91% of the 127 Georgia stations; it reaches 225 days one year in ten and falls short of 184 one year in ten. On average 83 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 13 days longer, to about April 20, and return around October 21. Severe cold of 16°F or below comes in 91% of winters, usually between January 1 and February 4.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Apr 4 | Apr 9 | Apr 14 | Apr 17 | Apr 20 | Apr 23 | Apr 26 | Apr 30 | May 4 |
| 32°F | Mar 20 | Mar 28 | Apr 1 | Apr 4 | Apr 7 | Apr 10 | Apr 14 | Apr 18 | Apr 23 |
| 28°F | Mar 6 | Mar 13 | Mar 17 | Mar 22 | Mar 27 | Mar 30 | Apr 2 | Apr 6 | Apr 11 |
| 24°F | Feb 19 | Feb 26 | Mar 2 | Mar 7 | Mar 12 | Mar 16 | Mar 20 | Mar 26 | Mar 31 |
| 20°F | Jan 28 | Feb 4 | Feb 12 | Feb 19 | Feb 25 | Mar 1 | Mar 6 | Mar 13 | Mar 19 |
| 16°F91% of yrs | Jan 5 | Jan 17 | Jan 25 | Jan 31 | Feb 4 | Feb 11 | Feb 19 | Feb 28 | Mar 8 |
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 9 | Oct 13 | Oct 16 | Oct 18 | Oct 21 | Oct 23 | Oct 26 | Oct 29 | Nov 1 |
| 32°F | Oct 18 | Oct 22 | Oct 25 | Oct 27 | Oct 30 | Nov 1 | Nov 3 | Nov 6 | Nov 10 |
| 28°F | Oct 26 | Oct 31 | Nov 1 | Nov 5 | Nov 7 | Nov 10 | Nov 14 | Nov 18 | Nov 25 |
| 24°F | Nov 4 | Nov 8 | Nov 11 | Nov 15 | Nov 19 | Nov 24 | Nov 28 | Dec 2 | Dec 13 |
| 20°F | Nov 12 | Nov 19 | Nov 25 | Nov 30 | Dec 4 | Dec 10 | Dec 20 | Dec 30 | Jan 8 |
| 16°F91% of yrs | Nov 26 | Dec 4 | Dec 15 | Dec 25 | Jan 1 | Jan 5 | Jan 11 | Jan 18 | Feb 1 |
Freeze probabilities 1991–2020 at Summerville, 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 30730 →Compare Lyerly with another place →
Weather by month in Lyerly
July is the warmest month at Summerville, GA, averaging 90°F by day and 67°F at night; January is the coldest at 52°F and 29°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 71% of years.
Warmth for growing adds up to 4,608 growing degree days a year (base 50°F), fewer than at 86% of the 127 Georgia stations. 38% of them (1,750) have built up by the end of June, and July adds the most, 883. Precipitation totals 58.3 inches a year, most in December (6.3") and least in October (3.8"); May to September bring 38% of it.
| Month | High °F | Low °F | Precip. in | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|---|
| Jan | 52 | 29 | 5.0 | 100% | 21 | 28 |
| Feb | 57 | 31 | 5.4 | 100% | 17 | 35 |
| Mar | 64 | 37 | 6.1 | 98% | 10 | 118 |
| Apr | 73 | 45 | 5.0 | 71% | 2 | 285 |
| May | 80 | 55 | 4.4 | 0% | 0 | 535 |
| Jun | 87 | 63 | 4.9 | 0% | 0 | 748 |
| Jul | 90 | 67 | 4.3 | 0% | 0 | 883 |
| Aug | 89 | 66 | 4.3 | 0% | 0 | 856 |
| Sep | 84 | 59 | 4.2 | 0% | 0 | 651 |
| Oct | 75 | 47 | 3.8 | 56% | 3 | 339 |
| Nov | 63 | 36 | 4.6 | 99% | 14 | 90 |
| Dec | 55 | 32 | 6.3 | 100% | 18 | 40 |
Monthly normals 1991–2020 at Summerville, GA (639 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, Rome R B Russell Airport, GA, 14 miles east of Lyerly, has a last frost 9 days earlier (March 29), a first frost 4 days later (November 3), a season 15 days longer.
When it snows in Lyerly, Georgia
Measurable snow is rare here: only 6 of 24 winters from 1991 to 2020 recorded 0.1 inch or more at Summerville, GA, 5.5 miles away, so there is no typical first-snow date to plan around.
Planting calendar for 30730
| When | What to do |
|---|---|
| January 27 – February 10 | Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out. |
| February 10 – February 24 | Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early. |
| March 10 – March 24 | Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil. |
| April 7 onward | Transplant tomatoes, peppers, basil, squash, cucumbersThe average last freeze has passed — still watch the actual forecast. |
| by August 7 | Sow the autumn crop of carrots, beets and brassicasThey need about twelve weeks to size up before growth stops. |
| by October 16 | Harvest tender crops, or be ready to cover themA first freeze two weeks early is well within normal variation. |
| October 30 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 30730 is 6 miles from Summerville, GA, which stands at 639 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 30747 (Summerville). The 2023 USDA Plant Hardiness Zone Map lists ZIP 30730 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.