Graniteville, South Carolina climate: Normal weather by month, frost dates and records
Graniteville's normal year runs from 30°F January nights to 92°F July afternoons. (NOAA 1991-2020 normals)
In metric: a yearly mean of 16.6°C, January lows of −1°C, July highs of 34°C.
- NOAA stationGraniteville (1.2 mi NE)
- Station IDUSC00383665
- Location33.58°N 81.79°W
- Elevation298 ft (91 m)
- Population (census place)2,176
On October 23, the normal high in Graniteville is 74°F and the normal low 46°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Graniteville.
- Jan 57° 30°
- Feb 61° 33°
- Mar 68° 37°
- Apr 76° 44°
- May 84° 56°
- Jun 89° 65°
- Jul 92° 68°
- Aug 91° 68°
- Sep 86° 61°
- Oct 77° 49°
- Nov 66° 37°
- Dec 58° 31°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Graniteville each month?
July is the warmest month, with normal highs of 92°F; January the coldest, with normal lows of 30°F.
| Month | High | Low | Mean | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|
| January | 57°F | 30°F | 43.5°F | – | <1 | 18 | 10 h 10 min |
| February | 61°F | 33°F | 46.6°F | – | <1 | 12 | 11 h |
| March | 68°F | 37°F | 52.4°F | – | <1 | 12 | 12 h |
| April | 76°F | 44°F | 60.2°F | – | 1 | 2 | 13 h |
| May | 84°F | 56°F | 69.6°F | – | 9 | <1 | 13 h 50 min |
| June | 89°F | 65°F | 77.3°F | – | 20 | <1 | 14 h 20 min |
| July | 92°F | 68°F | 80.4°F | – | 26 | <1 | 14 h 10 min |
| August | 91°F | 68°F | 79.3°F | – | 22 | <1 | 13 h 30 min |
| September | 86°F | 61°F | 73.3°F | – | 17 | <1 | 12 h 30 min |
| October | 77°F | 49°F | 62.6°F | – | 3 | 1 | 11 h 20 min |
| November | 66°F | 37°F | 51.7°F | – | <1 | 13 | 10 h 30 min |
| December | 58°F | 31°F | 44.6°F | – | <1 | 19 | 10 h |
| Year (annual) | 75°F | 48°F | 61.8°F | – | 97 | 75 |
The same normals in °C and millimetres
| Month | High | Low | Mean |
|---|---|---|---|
| January | 14°C | −1°C | 6.4°C |
| February | 16°C | 0°C | 8.1°C |
| March | 20°C | 3°C | 11.3°C |
| April | 24°C | 7°C | 15.7°C |
| May | 29°C | 13°C | 20.9°C |
| June | 32°C | 19°C | 25.2°C |
| July | 34°C | 20°C | 26.9°C |
| August | 33°C | 20°C | 26.3°C |
| September | 30°C | 16°C | 22.9°C |
| October | 25°C | 9°C | 17.0°C |
| November | 19°C | 3°C | 10.9°C |
| December | 15°C | −1°C | 7.0°C |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Aiken (5 mi SE) (8 miles away), gets 1 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00383665; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
When is the best weather to visit Graniteville?
Normal highs sit between 65°F and 85°F in March, April, May, October and November.
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00383665.
When is the last frost in Graniteville?
In Graniteville, the last spring frost (32°F) comes after April 9 in half of years and after April 23 in one year in ten; the first autumn frost comes before November 1 in half of years and before October 20 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- April 91 year in 10 after April 23; 9 in 10 after March 22
- First autumn frost, half of years before
- November 11 year in 10 before October 20; 9 in 10 before November 12
NOAA puts the median frost-free season at 206 days, and the season without a hard freeze (28°F) at 229 days.
A hard freeze (28°F) comes after March 28 in half of springs and before November 9 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Graniteville in zone 8b in ZIP code 29829, the nearest ZIP area.
Frost dates for every NOAA station in South Carolina · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00383665; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get in Graniteville?
In a normal year in Graniteville, 97 days a year reach 90°F (3 of them 100°F or more) and 75 nights fall to 32°F or colder.
- Days at 90°F or more
- 97a normal year
- Days at 100°F or more
- 3a normal year
- Nights at 32°F or colder
- 75a normal year
- Days that stay below freezing
- fewer than 1high of 32°F or less
Source: NOAA NCEI 1991-2020 annual normals, station USC00383665.
How sunny is Graniteville?
Over a year 79% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Graniteville, 4.6 kWh per square metre a day. July is the sunniest month (81%) and February the cloudiest (73%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 76% | 2.9 |
| February | 73% | 3.5 |
| March | 75% | 4.5 |
| April | 80% | 5.8 |
| May | 80% | 6.2 |
| June | 81% | 6.4 |
| July | 81% | 6.2 |
| August | 80% | 5.6 |
| September | 79% | 4.9 |
| October | 79% | 4.0 |
| November | 79% | 3.1 |
| December | 74% | 2.5 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How much heating and cooling does Graniteville need?
A normal year in Graniteville brings 2,961 heating degree days, 45% fewer than the median U.S. place (5,373), and 1,811 cooling degree days, 100% more than the median (908). Five months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 5,014 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 666 | 0 |
| February | 515 | 0 |
| March | 397 | 5 |
| April | 158 | 14 |
| May | 31 | 172 |
| June | 0 | 367 |
| July | 0 | 476 |
| August | 0 | 443 |
| September | 12 | 259 |
| October | 137 | 63 |
| November | 410 | 12 |
| December | 633 | 0 |
| Year (annual) | 2,961 | 1,811 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00383665. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
Has Graniteville been warmer than normal lately?
2025 averaged 64.1°F, 2.3°F above the 1991-2020 normal of 61.8°F. 5 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal |
|---|---|---|
| 2021 | 62.2°F | +0.4°F |
| 2022 | 62.9°F | +1.1°F |
| 2023 | 64.3°F | +2.5°F |
| 2024 | 64.8°F | +3.0°F |
| 2025 | 64.1°F | +2.3°F |
Source: observed years: ACIS, station USC00383665. A year counts only with all twelve months complete.
How does Graniteville's climate compare?
Graniteville is warmer than 18 of the other 72 places with their own NOAA record in South Carolina. Across the 7,247 U.S. stations with normals, its annual mean of 61.8°F is warmer than 79%.
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers.
Which places near Graniteville share this climate record?
2 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Gloverville, SC2,418 people · 4 mi S
- Warrenville, SC925 people · 2 mi S
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Graniteville's climate
What is the coldest month in Graniteville?
January, with a normal high of 57°F and a normal low of 30°F. The warmest is July (92°F by day, 68°F at night).
Does it snow in Graniteville?
Rarely. NOAA publishes no 1991-2020 snowfall normal for Graniteville's NOAA station; the nearest record that keeps one, Aiken (5 mi SE) (8 miles away), records 1 inches of snow in a normal year.
What plant hardiness zone is Graniteville in?
The USDA's 2023 map puts Graniteville in zone 8b in ZIP code 29829, the nearest ZIP area.
How late can frost come in Graniteville?
In half of years the last 32°F night comes after April 9; in one year in ten it comes after April 23. Waiting until April 23 leaves about a one-in-ten chance of a later frost.
Nearby and next
- South Carolina climateThe statewide normals and every place in the state
- Aiken, SC6 miles from this station, 63.9°F a year
- Johnston, SC14 miles from this station, 62.7°F a year
- Edgefield, SC16 miles from this station, 63.7°F a year
- Augusta, GA17 miles from this station, 65.4°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made