USDA Hardiness Zone 8b
Frost Dates for 29510 — Andrews, South Carolina
NOAA 1991–2020 normals from Andrews, SC (35 ft), 2 miles southeast.
Updated
In Andrews, the last spring frost (32°F) is around March 23 in half of years and has passed by April 7 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 237 days (NOAA, Andrews, SC).
- Last spring frost
- March 23
- First fall frost
- November 13
- Growing season
- 237 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
- —
median, 1991–2020
median, 1991–2020
2 of 20 observed
NOAA normal
Frost risk by date in Andrews
Half of springs at Andrews, SC see their last 32°F night by March 23; only one in ten is past it by March 4, and one in ten still has one after April 7. Planting tender crops after March 29 leaves a 30% risk of a frost on them, after April 1 20%, and after April 7 10%. The 15 days between the even-odds date and the one-in-ten date is narrower than at 66% of the 105 South Carolina 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 1 one year in ten. A hard freeze of 28°F follows 12 days later, around November 25; in spring the one-in-ten date for 28°F is March 27, 11 days before the 32°F one. The freeze-free season lasts 237 days in a typical year, longer than at 64% of the 105 South Carolina stations; it reaches 264 days one year in ten and falls short of 213 one year in ten. On average 44 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 3, and return around November 3. Nights of 24°F, cold enough to damage hardier plants, come in 99% of winters and 16°F in 44%.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Mar 19 | Mar 25 | Mar 29 | Mar 31 | Apr 3 | Apr 7 | Apr 10 | Apr 14 | Apr 19 |
| 32°F | Mar 4 | Mar 10 | Mar 16 | Mar 19 | Mar 23 | Mar 26 | Mar 29 | Apr 1 | Apr 7 |
| 28°F | Feb 13 | Feb 23 | Feb 28 | Mar 4 | Mar 8 | Mar 13 | Mar 17 | Mar 22 | Mar 27 |
| 24°F99% of yrs | Jan 19 | Jan 30 | Feb 5 | Feb 11 | Feb 18 | Feb 26 | Mar 2 | Mar 7 | Mar 17 |
| 20°F83% of yrs | Jan 1 | Jan 11 | Jan 18 | Jan 24 | Jan 30 | Feb 2 | Feb 10 | Feb 21 | Mar 2 |
| 16°F44% of yrs | too rare for a date | ||||||||
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 22 | Oct 27 | Oct 30 | Nov 1 | Nov 3 | Nov 5 | Nov 7 | Nov 11 | Nov 17 |
| 32°F | Nov 1 | Nov 4 | Nov 6 | Nov 9 | Nov 13 | Nov 16 | Nov 20 | Nov 25 | Dec 1 |
| 28°F | Nov 7 | Nov 12 | Nov 17 | Nov 21 | Nov 25 | Nov 29 | Dec 2 | Dec 8 | Dec 20 |
| 24°F99% of yrs | Nov 19 | Nov 26 | Dec 1 | Dec 7 | Dec 12 | Dec 21 | Dec 28 | Jan 4 | Jan 14 |
| 20°F83% of yrs | Dec 2 | Dec 11 | Dec 20 | Dec 26 | Jan 1 | Jan 5 | Jan 10 | Jan 18 | Jan 29 |
| 16°F44% of yrs | too rare for a date | ||||||||
Freeze probabilities 1991–2020 at Andrews, SC, 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 29510 →Compare Andrews with another place →
Weather by month in Andrews
July is the warmest month at Andrews, SC, averaging 90°F by day and 71°F at night; January is the coldest at 58°F and 34°F. A freezing night is all but certain in every month from December to March (a 90% chance or more). From May to October the chance of a 32°F night stays under 10% each month. In spring, April still brings one in 22% of years.
Warmth for growing adds up to 5,518 growing degree days a year (base 50°F), more than at 59% of the 105 South Carolina stations. 40% of them (2,195) have built up by the end of June, and July adds the most, 947.
| Month | High °F | Low °F | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|
| Jan | 58 | 34 | 100% | 14 | 69 |
| Feb | 61 | 36 | 98% | 9 | 83 |
| Mar | 68 | 42 | 91% | 4 | 203 |
| Apr | 76 | 49 | 22% | <1 | 384 |
| May | 82 | 59 | 0% | 0 | 639 |
| Jun | 87 | 67 | 0% | 0 | 817 |
| Jul | 90 | 71 | 0% | 0 | 947 |
| Aug | 88 | 70 | 0% | 0 | 905 |
| Sep | 84 | 65 | 0% | 0 | 726 |
| Oct | 77 | 53 | 9% | <1 | 462 |
| Nov | 67 | 42 | 87% | 5 | 186 |
| Dec | 61 | 36 | 98% | 11 | 97 |
Monthly normals 1991–2020 at Andrews, SC (35 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, Georgetown Co Airport, SC, 18 miles southeast of Andrews, has a last frost 11 days earlier (March 12), a first frost 11 days later (November 24), a season 21 days longer.
When it snows in Andrews, South Carolina
Measurable snow is rare here: only 2 of 20 winters from 1991 to 2020 recorded 0.1 inch or more at Andrews, SC, 1.6 miles away, so there is no typical first-snow date to plan around.
Planting calendar for 29510
| When | What to do |
|---|---|
| January 12 – January 26 | Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out. |
| January 26 – February 9 | Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early. |
| February 23 – March 9 | Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil. |
| March 23 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 29510 is 2 miles from Andrews, SC, which stands at 35 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 29510 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.
Frost dates across South Carolina →
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.