USDA Hardiness Zone 8b
Frost Dates for 31021 — Dublin, Georgia
NOAA 1991–2020 normals from Dublin, GA (230 ft), 3 miles northeast.
Updated
In Dublin, the last spring frost (32°F) is around March 14 in half of years and has passed by April 1 in nine years out of ten. The first fall frost comes around November 13, as early as November 1 one year in ten, leaving a typical freeze-free season of 247 days (NOAA, Dublin, GA).
- Last spring frost
- March 14
- First fall frost
- November 13
- Growing season
- 247 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
- 0%
- Snow per year
- 0"
median, 1991–2020
median, 1991–2020
0 of 20 observed
NOAA normal
Frost risk by date in Dublin
Half of springs at Dublin, GA see their last 32°F night by March 14; only one in ten is past it by February 20, and one in ten still has one after April 1. Planting tender crops after March 21 leaves a 30% risk of a frost on them, after March 26 20%, and after April 1 10%. The 18 days between the even-odds date and the one-in-ten date is narrower than at 41% of the 127 Georgia stations behind this site's ZIP pages.
In fall the first 32°F night comes by November 13 in half of years, as early as November 1 one year in ten, and holds off past December 2 one year in ten. A hard freeze of 28°F follows 14 days later, around November 27; in spring the one-in-ten date for 28°F is March 18, 14 days before the 32°F one. The freeze-free season lasts 247 days in a typical year, longer than at 64% of the 127 Georgia stations; it reaches 273 days one year in ten and falls short of 224 one year in ten. On average 47 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 15 days longer, to about March 29, and return around November 3. Nights of 24°F, cold enough to damage hardier plants, come in 97% of winters and 16°F in 35%.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Mar 9 | Mar 16 | Mar 20 | Mar 25 | Mar 29 | Apr 1 | Apr 4 | Apr 8 | Apr 14 |
| 32°F | Feb 20 | Feb 28 | Mar 5 | Mar 10 | Mar 14 | Mar 17 | Mar 21 | Mar 26 | Apr 1 |
| 28°F | Jan 31 | Feb 6 | Feb 14 | Feb 20 | Feb 26 | Mar 1 | Mar 6 | Mar 12 | Mar 18 |
| 24°F97% of yrs | Jan 10 | Jan 21 | Jan 29 | Feb 1 | Feb 6 | Feb 12 | Feb 19 | Feb 28 | Mar 7 |
| 20°F73% of yrs | Dec 27 | Jan 5 | Jan 13 | Jan 20 | Jan 26 | Jan 31 | Feb 3 | Feb 10 | Feb 23 |
| 16°F35% of yrs | too rare for a date | ||||||||
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 22 | Oct 27 | Oct 31 | Nov 1 | Nov 3 | Nov 6 | Nov 8 | Nov 12 | Nov 18 |
| 32°F | Nov 1 | Nov 4 | Nov 7 | Nov 10 | Nov 13 | Nov 16 | Nov 20 | Nov 25 | Dec 2 |
| 28°F | Nov 8 | Nov 15 | Nov 19 | Nov 23 | Nov 27 | Dec 1 | Dec 5 | Dec 13 | Dec 24 |
| 24°F97% of yrs | Nov 21 | Nov 28 | Dec 2 | Dec 7 | Dec 14 | Dec 23 | Dec 31 | Jan 5 | Jan 18 |
| 20°F73% of yrs | Dec 3 | Dec 11 | Dec 20 | Dec 29 | Jan 2 | Jan 9 | Jan 15 | Jan 23 | Feb 2 |
| 16°F35% of yrs | too rare for a date | ||||||||
Freeze probabilities 1991–2020 at Dublin, 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 31021 →Compare Dublin with another place →
Weather by month in Dublin
July is the warmest month at Dublin, GA, averaging 94°F by day and 71°F at night; January is the coldest at 58°F and 35°F. A freezing night is all but certain in every month from December to February (a 90% chance or more). From May to October the chance of a 32°F night stays under 10% each month. In spring, March still brings one in 76% of years and April still brings one in 10% of years.
Warmth for growing adds up to 5,953 growing degree days a year (base 50°F), more than at 67% of the 127 Georgia stations. 41% of them (2,430) have built up by the end of June, and July adds the most, 1,007. Precipitation totals 47.4 inches a year, most in June (5.3") and least in May (2.6"); May to September bring 44% of it.
| Month | High °F | Low °F | Precip. in | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|---|
| Jan | 58 | 35 | 4.4 | 100% | 14 | 71 |
| Feb | 62 | 38 | 4.1 | 95% | 10 | 92 |
| Mar | 71 | 44 | 4.6 | 76% | 4 | 258 |
| Apr | 78 | 51 | 2.8 | 10% | <1 | 436 |
| May | 86 | 59 | 2.6 | 0% | 0 | 698 |
| Jun | 91 | 68 | 5.3 | 0% | 0 | 876 |
| Jul | 94 | 71 | 4.5 | 0% | 0 | 1007 |
| Aug | 92 | 70 | 4.8 | 0% | 0 | 970 |
| Sep | 87 | 64 | 3.6 | 0% | 0 | 771 |
| Oct | 78 | 53 | 3.2 | 8% | <1 | 480 |
| Nov | 69 | 42 | 3.1 | 85% | 5 | 200 |
| Dec | 61 | 37 | 4.4 | 98% | 13 | 96 |
Monthly normals 1991–2020 at Dublin, GA (230 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, Dublin 2, GA, 3 miles northeast of Dublin, has the same 50% last-frost date, a first frost 3 days later (November 16).
When it snows in Dublin, Georgia
Measurable snow is rare here: only 0 of 20 winters from 1991 to 2020 recorded 0.1 inch or more at Dublin, GA, 2.8 miles away, so there is no typical first-snow date to plan around.
Planting calendar for 31021
| When | What to do |
|---|---|
| January 3 – January 17 | Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out. |
| January 17 – January 31 | Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early. |
| February 14 – February 28 | Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil. |
| March 14 onward | Transplant tomatoes, peppers, basil, squash, cucumbersThe average last freeze has passed — still watch the actual forecast. |
| by August 21 | Sow the autumn crop of carrots, beets and brassicasThey need about twelve weeks to size up before growth stops. |
| by October 30 | Harvest tender crops, or be ready to cover themA first freeze two weeks early is well within normal variation. |
| November 13 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 31021 is 3 miles from Dublin, GA, which stands at 230 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 2 other ZIP codes share the station. The 2023 USDA Plant Hardiness Zone Map lists ZIP 31021 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.