USDA Hardiness Zone 8b
Frost Dates for 29625 — Anderson, South Carolina
NOAA 1991–2020 normals from Anderson Co Airport, SC (760 ft), 2 miles south.
Updated
In Anderson, the last spring frost (32°F) is around March 29 in half of years and has passed by April 13 in nine years out of ten. The first fall frost comes around November 8, as early as October 26 one year in ten, leaving a typical freeze-free season of 227 days (NOAA, Anderson Co Airport, SC).
- Last spring frost
- March 29
- First fall frost
- November 8
- Growing season
- 227 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
- January 20
- Last snow
- January 24
- Winters with snow
- 79%
- Snow per year
- 2.2"
median, 1991–2020
median, 1991–2020
22 of 28 observed
NOAA normal
Frost risk by date in Anderson
Half of springs at Anderson Co Airport, SC see their last 32°F night by March 29; only one in ten is past it by March 11, and one in ten still has one after April 13. Planting tender crops after April 4 leaves a 30% risk of a frost on them, after April 8 20%, and after April 13 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 8 in half of years, as early as October 26 one year in ten, and holds off past November 23 one year in ten. A hard freeze of 28°F follows 13 days later, around November 21; in spring the one-in-ten date for 28°F is April 1, 12 days before the 32°F one. The freeze-free season lasts 227 days in a typical year, shorter than at 58% of the 105 South Carolina stations; it reaches 248 days one year in ten and falls short of 206 one year in ten. On average 53 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 April 10, and return around October 28. Nights of 24°F, cold enough to damage hardier plants, come in 100% of winters and 16°F in 61%.
| Low | 90% | 80% | 70% | 60% | 50% | 40% | 30% | 20% | 10% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Mar 26 | Mar 31 | Apr 4 | Apr 6 | Apr 10 | Apr 13 | Apr 16 | Apr 19 | Apr 24 |
| 32°F | Mar 11 | Mar 18 | Mar 22 | Mar 26 | Mar 29 | Apr 1 | Apr 4 | Apr 8 | Apr 13 |
| 28°F | Feb 21 | Feb 28 | Mar 5 | Mar 10 | Mar 15 | Mar 18 | Mar 22 | Mar 27 | Apr 1 |
| 24°F | Jan 30 | Feb 5 | Feb 14 | Feb 20 | Feb 26 | Mar 3 | Mar 9 | Mar 13 | Mar 20 |
| 20°F93% of yrs | Jan 4 | Jan 16 | Jan 24 | Jan 30 | Feb 3 | Feb 9 | Feb 18 | Feb 27 | Mar 8 |
| 16°F61% of yrs | Jan 1 | Jan 8 | Jan 13 | Jan 20 | Jan 26 | Jan 31 | Feb 4 | Feb 13 | Feb 26 |
| Low | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 17 | Oct 20 | Oct 23 | Oct 26 | Oct 28 | Oct 31 | Nov 2 | Nov 5 | Nov 10 |
| 32°F | Oct 26 | Oct 31 | Nov 2 | Nov 5 | Nov 8 | Nov 10 | Nov 14 | Nov 17 | Nov 23 |
| 28°F | Nov 6 | Nov 11 | Nov 14 | Nov 17 | Nov 21 | Nov 25 | Nov 28 | Dec 3 | Dec 11 |
| 24°F | Nov 16 | Nov 24 | Nov 29 | Dec 2 | Dec 6 | Dec 12 | Dec 21 | Dec 29 | Jan 5 |
| 20°F93% of yrs | Nov 29 | Dec 6 | Dec 14 | Dec 22 | Dec 29 | Jan 2 | Jan 8 | Jan 15 | Jan 26 |
| 16°F61% of yrs | Dec 14 | Dec 24 | Jan 1 | Jan 6 | Jan 11 | Jan 15 | Jan 22 | Jan 28 | Feb 5 |
Freeze probabilities 1991–2020 at Anderson Co Airport, 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 29625 →Compare Anderson with another place →
Weather by month in Anderson
July is the warmest month at Anderson Co Airport, SC, averaging 90°F by day and 70°F at night; January is the coldest at 53°F and 33°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 42% of years.
Warmth for growing adds up to 5,114 growing degree days a year (base 50°F), fewer than at 70% of the 105 South Carolina stations. 39% of them (2,008) have built up by the end of June, and July adds the most, 938. Precipitation totals 46.3 inches a year, most in December (4.4") and least in October (3.1"); May to September bring 42% of it.
| Month | High °F | Low °F | Precip. in | 32°F night | Nights ≤ 32°F | GDD 50°F |
|---|---|---|---|---|---|---|
| Jan | 53 | 33 | 4.1 | 100% | 16 | 34 |
| Feb | 57 | 36 | 3.9 | 99% | 11 | 53 |
| Mar | 65 | 42 | 4.3 | 94% | 5 | 168 |
| Apr | 73 | 49 | 3.6 | 42% | 1 | 344 |
| May | 81 | 58 | 3.7 | 0% | 0 | 603 |
| Jun | 87 | 67 | 4.2 | 0% | 0 | 805 |
| Jul | 90 | 70 | 3.8 | 0% | 0 | 938 |
| Aug | 89 | 70 | 3.9 | 0% | 0 | 904 |
| Sep | 83 | 63 | 3.7 | 0% | 0 | 699 |
| Oct | 73 | 51 | 3.1 | 22% | 1 | 389 |
| Nov | 63 | 41 | 3.6 | 94% | 7 | 128 |
| Dec | 55 | 36 | 4.4 | 99% | 13 | 49 |
Monthly normals 1991–2020 at Anderson Co Airport, SC (760 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, Anderson, SC, 3 miles east of Anderson, has a last frost 6 days earlier (March 23), a first frost 3 days later (November 11), a season 7 days longer.
When it snows in Anderson, South Carolina
The first measurable snow (0.1 inch or more) in Anderson usually arrives around January 20, and the last of the season around January 24. Those are the middle dates across the winters of 1991–2020 at Clemson Univ, SC, 10.7 miles away: half of years saw snow earlier, half later. Snow fell in 79% of those winters. The last 32°F night of spring typically comes 64 days after the last snow.
Planting calendar for 29625
| When | What to do |
|---|---|
| January 18 – February 1 | Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out. |
| February 1 – February 15 | Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early. |
| March 1 – March 15 | Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil. |
| March 29 onward | Transplant tomatoes, peppers, basil, squash, cucumbersThe average last freeze has passed — still watch the actual forecast. |
| by August 16 | Sow the autumn crop of carrots, beets and brassicasThey need about twelve weeks to size up before growth stops. |
| by October 25 | Harvest tender crops, or be ready to cover themA first freeze two weeks early is well within normal variation. |
| November 8 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 29625 is 2 miles from Anderson Co Airport, SC, which stands at 760 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 29625 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.