Winnsboro, South Carolina climate: Normal weather by month, frost dates and records
Winnsboro's normal year runs from 31°F January nights to 91°F July afternoons, with 45.1 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 16.2°C, January lows of −1°C, July highs of 33°C, 1,146 mm of precipitation a year.
- NOAA stationWinnsboro
- Station IDUSC00389327
- Location34.37°N 81.08°W
- Elevation530 ft (162 m)
- From the centerunder 1 mile
- Population3,279
On October 24, the normal high in Winnsboro is 71°F and the normal low 47°F, and the chance of measurable rain or snow is 24%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Winnsboro.
- Jan 53° 31°
- Feb 57° 33°
- Mar 65° 40°
- Apr 74° 48°
- May 81° 57°
- Jun 88° 65°
- Jul 91° 69°
- Aug 89° 68°
- Sep 83° 62°
- Oct 74° 50°
- Nov 63° 39°
- Dec 55° 34°
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 Winnsboro each month?
July is the warmest month, with normal highs of 91°F; January the coldest, with normal lows of 31°F. The most precipitation falls in August (4.69 in), the least in May (3.07 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 53°F | 31°F | 42.0°F | 3.99 | 11 | <1 | 17 | 10 h 10 min |
| February | 57°F | 33°F | 45.2°F | 3.59 | 10 | <1 | 13 | 11 h |
| March | 65°F | 40°F | 52.3°F | 4.03 | 9 | <1 | 7 | 11 h 50 min |
| April | 74°F | 48°F | 61.1°F | 3.10 | 9 | <1 | <1 | 13 h |
| May | 81°F | 57°F | 69.0°F | 3.07 | 8 | 4 | <1 | 14 h |
| June | 88°F | 65°F | 76.4°F | 4.05 | 10 | 13 | <1 | 14 h 30 min |
| July | 91°F | 69°F | 80.0°F | 4.10 | 10 | 22 | <1 | 14 h 20 min |
| August | 89°F | 68°F | 78.3°F | 4.69 | 11 | 16 | <1 | 13 h 30 min |
| September | 83°F | 62°F | 72.5°F | 3.88 | 8 | 7 | <1 | 12 h 30 min |
| October | 74°F | 50°F | 61.8°F | 3.29 | 7 | <1 | 1 | 11 h 20 min |
| November | 63°F | 39°F | 51.2°F | 3.19 | 9 | <1 | 7 | 10 h 20 min |
| December | 55°F | 34°F | 44.5°F | 4.14 | 11 | <1 | 15 | 9 h 50 min |
| Year (annual) | 73°F | 50°F | 61.2°F | 45.12 | 112 | 62 | 60 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 12°C | −1°C | 5.6°C | 101 mm |
| February | 14°C | 1°C | 7.3°C | 91 mm |
| March | 18°C | 4°C | 11.3°C | 102 mm |
| April | 23°C | 9°C | 16.2°C | 79 mm |
| May | 27°C | 14°C | 20.6°C | 78 mm |
| June | 31°C | 18°C | 24.7°C | 103 mm |
| July | 33°C | 21°C | 26.7°C | 104 mm |
| August | 32°C | 20°C | 25.7°C | 119 mm |
| September | 29°C | 17°C | 22.5°C | 99 mm |
| October | 23°C | 10°C | 16.6°C | 84 mm |
| November | 17°C | 4°C | 10.7°C | 81 mm |
| December | 13°C | 1°C | 6.9°C | 105 mm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00389327; 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 Winnsboro?
Normal highs sit between 65°F and 85°F in March, April, May, September and October. Of those, October has the fewest days with rain (7).
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 USC00389327.
When is the last frost in Winnsboro?
In Winnsboro, the last spring frost (32°F) comes after March 31 in half of years and after April 18 in one year in ten; the first autumn frost comes before November 6 in half of years and before October 25 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
- March 311 year in 10 after April 18; 9 in 10 after March 14
- First autumn frost, half of years before
- November 61 year in 10 before October 25; 9 in 10 before November 21
NOAA puts the median frost-free season at 221 days, and the season without a hard freeze (28°F) at 247 days.
A hard freeze (28°F) comes after March 18 in half of springs and before November 17 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Winnsboro in zone 8a in ZIP code 29180, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Winnsboro's NOAA station is in zone 8a: the coldest night of a typical year reaches 14°F (25 complete years).
Frost dates for every NOAA station in South Carolina · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00389327; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. 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 Winnsboro?
In a normal year in Winnsboro, 62 days a year reach 90°F (3 of them 100°F or more), 60 nights fall to 32°F or colder and 112 days bring measurable precipitation.
- Days at 90°F or more
- 62a normal year
- Days at 100°F or more
- 3a normal year
- Nights at 32°F or colder
- 60a normal year
- Days that stay below freezing
- 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 112a normal year
The highest temperature in this station's record (since 1896) is 108°F, on July 22, 1926; the lowest is −3°F, on February 14, 1899.
The wettest calendar year on that record is 1964, with 69.36 in; the snowiest season is 1935–36, with 16.8 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00389327; records: ACIS (NOAA Regional Climate Centers), station USC00389327. Records use complete months only; a month missing more than three days is left out.
How sunny is Winnsboro?
Over a year 78% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Winnsboro, 4.5 kWh per square metre a day. June is the sunniest month (82%) and February the cloudiest (71%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 75% | 2.7 |
| February | 71% | 3.4 |
| March | 74% | 4.4 |
| April | 78% | 5.6 |
| May | 79% | 6.1 |
| June | 82% | 6.4 |
| July | 81% | 6.1 |
| August | 80% | 5.5 |
| September | 79% | 4.8 |
| October | 79% | 3.9 |
| November | 79% | 3.0 |
| December | 73% | 2.4 |
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 Winnsboro need?
A normal year in Winnsboro brings 3,107 heating degree days, 42% fewer than the median U.S. place (5,373), and 1,750 cooling degree days, 93% 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 5,004 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 713 | 0 |
| February | 554 | 1 |
| March | 403 | 10 |
| April | 167 | 50 |
| May | 41 | 165 |
| June | 3 | 345 |
| July | 0 | 465 |
| August | 0 | 414 |
| September | 14 | 241 |
| October | 152 | 53 |
| November | 421 | 6 |
| December | 638 | 1 |
| Year (annual) | 3,107 | 1,750 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00389327. 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 Winnsboro been warmer than normal lately?
2025 averaged 62.2°F, 1.0°F above the 1991-2020 normal of 61.2°F. 4 of the 4 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 62.1°F | +0.9°F | 40.13 |
| 2023 | 62.7°F | +1.5°F | 42.81 |
| 2024 | 62.9°F | +1.7°F | 55.50 |
| 2025 | 62.2°F | +1.0°F | 44.81 |
Over 78 complete years from 1888 to 2025, the station's annual mean temperature rose at a fitted 0.4°F per century (+0.02°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00389327; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Winnsboro's climate compare?
Winnsboro is warmer than 11 of the other 72 places with their own NOAA record in South Carolina, and wetter than 6. Across the 7,247 U.S. stations with normals, its annual mean of 61.2°F is warmer than 78%.
In the Köppen classification computed from these normals, Winnsboro is Cfa: temperate, no dry season, hot summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Winnsboro share this climate record?
3 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.
- Great Falls, SC1,926 people · 17 mi NE
- Winnsboro Mills, SC1,426 people · 1 mi SE
- Ridgeway, SC255 people · 8 mi SE
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 Winnsboro's climate
What is the coldest month in Winnsboro?
January, with a normal high of 53°F and a normal low of 31°F. The warmest is July (91°F by day, 69°F at night).
Does it snow in Winnsboro?
Rarely: NOAA's normal is no measurable snow a year.
What is the rainiest month in Winnsboro?
August, with 4.69 in of precipitation in a normal year; the driest is May with 3.07 in.
What plant hardiness zone is Winnsboro in?
The USDA's 2023 map puts Winnsboro in zone 8a in ZIP code 29180, the nearest ZIP area. By the same method at Winnsboro's NOAA station, the coldest night of a typical year reaches 14°F (25 years, 1991-2020): zone 8a.
How late can frost come in Winnsboro?
In half of years the last 32°F night comes after March 31; in one year in ten it comes after April 18. Waiting until April 18 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
- Cedar Creek (2 mi E), SC11 miles from this station, 60.2°F a year
- Sandhill Research - Elgin, SC21 miles from this station, 63.5°F a year
- Wateree Dam, SC22 miles from this station, 62.9°F a year
- Little Mountain, SC22 miles from this station, 63.4°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made