USDA Hardiness Zone 8b
Frost Dates for 30411 — Alamo, Georgia
NOAA 1991–2020 normals from Hazlehurst, GA (250 ft), 22 miles southeast.
Updated
In Alamo, the last spring frost (32°F) is around March 12 in half of years and has passed by March 28 in nine years out of ten. The first fall frost comes around November 17, as early as November 1 one year in ten, leaving a typical freeze-free season of 251 days (NOAA, Hazlehurst, GA).
- Last spring frost
- March 12
- First fall frost
- November 17
- Growing season
- 251 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
- —
median, 1991–2020
median, 1991–2020
0 of 24 observed
NOAA normal
Frost risk by date in Alamo
Half of springs at Hazlehurst, GA see their last 32°F night by March 12; only one in ten is past it by February 18, and one in ten still has one after March 28. Planting tender crops after March 18 leaves a 30% risk of a frost on them, after March 23 20%, and after March 28 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 17 in half of years, as early as November 1 one year in ten, and holds off past December 8 one year in ten. A hard freeze of 28°F follows 17 days later, around December 4; in spring the one-in-ten date for 28°F is March 18, 10 days before the 32°F one. The freeze-free season lasts 251 days in a typical year, longer than at 70% of the 127 Georgia stations; it reaches 281 days one year in ten and falls short of 225 one year in ten. On average 33 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 12 days longer, to about March 24, and return around November 6. Nights of 24°F, cold enough to damage hardier plants, come in 93% of winters and 16°F in 26%.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Mar 6 | Mar 12 | Mar 17 | Mar 21 | Mar 24 | Mar 28 | Mar 31 | Apr 5 | Apr 10 |
| 32°F | Feb 18 | Feb 26 | Mar 3 | Mar 7 | Mar 12 | Mar 15 | Mar 18 | Mar 23 | Mar 28 |
| 28°F | Jan 29 | Feb 6 | Feb 13 | Feb 18 | Feb 24 | Mar 2 | Mar 6 | Mar 12 | Mar 18 |
| 24°F93% of yrs | Jan 6 | Jan 18 | Jan 24 | Jan 31 | Feb 4 | Feb 8 | Feb 15 | Feb 24 | Mar 5 |
| 20°F64% of yrs | Dec 27 | Jan 4 | Jan 11 | Jan 17 | Jan 23 | Jan 29 | Feb 2 | Feb 8 | Feb 19 |
| 16°F26% of yrs | too rare for a date | ||||||||
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 24 | Oct 29 | Nov 1 | Nov 3 | Nov 6 | Nov 8 | Nov 12 | Nov 16 | Nov 21 |
| 32°F | Nov 1 | Nov 6 | Nov 10 | Nov 14 | Nov 17 | Nov 21 | Nov 25 | Dec 1 | Dec 8 |
| 28°F | Nov 12 | Nov 19 | Nov 25 | Nov 30 | Dec 4 | Dec 9 | Dec 15 | Dec 24 | Jan 4 |
| 24°F93% of yrs | Nov 27 | Dec 5 | Dec 11 | Dec 18 | Dec 24 | Jan 1 | Jan 5 | Jan 13 | Jan 27 |
| 20°F64% of yrs | Dec 8 | Dec 18 | Dec 26 | Jan 1 | Jan 5 | Jan 10 | Jan 16 | Jan 25 | Feb 5 |
| 16°F26% of yrs | too rare for a date | ||||||||
Freeze probabilities 1991–2020 at Hazlehurst, 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 30411 →Compare Alamo with another place →
Weather by month in Alamo
July is the warmest month at Hazlehurst, GA, averaging 92°F by day and 72°F at night; January is the coldest at 60°F and 38°F. A freezing night is all but certain in every month from December to February (a 90% chance or more). From April to October the chance of a 32°F night stays under 10% each month. In spring, March still brings one in 72% of years.
Warmth for growing adds up to 6,270 growing degree days a year (base 50°F), more than at 78% of the 127 Georgia stations. 42% of them (2,603) have built up by the end of June, and July adds the most, 993. Precipitation totals 51.1 inches a year, most in August (6.9") and least in October (3.0"); May to September bring 48% of it.
| Month | High °F | Low °F | Precip. in | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|---|
| Jan | 60 | 38 | 4.2 | 99% | 12 | 110 |
| Feb | 64 | 41 | 4.2 | 95% | 7 | 133 |
| Mar | 71 | 47 | 4.4 | 72% | 2 | 293 |
| Apr | 78 | 53 | 3.7 | 6% | <1 | 467 |
| May | 85 | 62 | 3.3 | 0% | 0 | 722 |
| Jun | 90 | 69 | 5.3 | 0% | 0 | 877 |
| Jul | 92 | 72 | 4.5 | 0% | 0 | 993 |
| Aug | 91 | 71 | 6.9 | 0% | 0 | 967 |
| Sep | 87 | 66 | 4.5 | 0% | 0 | 789 |
| Oct | 79 | 55 | 3.0 | 9% | <1 | 527 |
| Nov | 70 | 45 | 3.0 | 76% | 3 | 251 |
| Dec | 63 | 40 | 4.1 | 95% | 9 | 140 |
Monthly normals 1991–2020 at Hazlehurst, GA (250 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, Eastman 1 W, GA, 24 miles west of Alamo and 150 feet higher, has a last frost 7 days earlier (March 5), a first frost 7 days later (November 24), a season 12 days longer.
When it snows in Alamo, Georgia
Measurable snow is rare here: only 0 of 24 winters from 1991 to 2020 recorded 0.1 inch or more at Eastman 1 W, GA, 24.5 miles away, so there is no typical first-snow date to plan around.
Planting calendar for 30411
| When | What to do |
|---|---|
| January 1 – January 15 | Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out. |
| January 15 – January 29 | Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early. |
| February 12 – February 26 | Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil. |
| March 12 onward | Transplant tomatoes, peppers, basil, squash, cucumbersThe average last freeze has passed — still watch the actual forecast. |
| by August 25 | Sow the autumn crop of carrots, beets and brassicasThey need about twelve weeks to size up before growth stops. |
| by November 3 | Harvest tender crops, or be ready to cover themA first freeze two weeks early is well within normal variation. |
| November 17 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 30411 is 22 miles from Hazlehurst, GA, which stands at 250 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. 5 other ZIP codes share the station; its figures are presented in full for 31539 (Hazlehurst). The 2023 USDA Plant Hardiness Zone Map lists ZIP 30411 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.