McCormick, South Carolina climate: Normal weather by month, frost dates and records
McCormick's normal year runs from 33°F January nights to 92°F July afternoons, with 47.3 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 16.9°C, January lows of 0°C, July highs of 34°C, 1,201 mm of precipitation a year.
- NOAA stationMcCormick
- Station IDUSC00385660
- Location33.91°N 82.29°W
- Elevation507 ft (155 m)
- From the centerunder 1 mile
- Population1,960
On October 23, the normal high in McCormick is 74°F and the normal low 48°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for McCormick.
- Jan 56° 33°
- Feb 59° 34°
- Mar 67° 40°
- Apr 75° 48°
- May 83° 57°
- Jun 89° 66°
- Jul 92° 70°
- Aug 91° 69°
- Sep 86° 63°
- Oct 76° 51°
- Nov 65° 40°
- Dec 57° 35°
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 McCormick each month?
July is the warmest month, with normal highs of 92°F; January the coldest, with normal lows of 33°F. The most precipitation falls in June (4.62 in), the least in October (3.11 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 56°F | 33°F | 44.2°F | 4.16 | – | <1 | 18 | 10 h 10 min |
| February | 59°F | 34°F | 46.2°F | 3.96 | – | <1 | 12 | 11 h |
| March | 67°F | 40°F | 53.5°F | 4.49 | – | <1 | 8 | 11 h 50 min |
| April | 75°F | 48°F | 61.9°F | 3.23 | – | 1 | <1 | 13 h |
| May | 83°F | 57°F | 70.0°F | 3.23 | – | 5 | <1 | 13 h 50 min |
| June | 89°F | 66°F | 77.7°F | 4.62 | – | 17 | <1 | 14 h 20 min |
| July | 92°F | 70°F | 81.0°F | 4.49 | – | 24 | <1 | 14 h 10 min |
| August | 91°F | 69°F | 80.1°F | 4.45 | – | 20 | <1 | 13 h 30 min |
| September | 86°F | 63°F | 74.3°F | 3.63 | – | 12 | <1 | 12 h 30 min |
| October | 76°F | 51°F | 63.5°F | 3.11 | – | 1 | <1 | 11 h 20 min |
| November | 65°F | 40°F | 52.2°F | 3.62 | – | <1 | 7 | 10 h 30 min |
| December | 57°F | 35°F | 45.9°F | 4.30 | – | <1 | 13 | 9 h 50 min |
| Year (annual) | 75°F | 51°F | 62.5°F | 47.29 | – | 79 | 58 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 13°C | 0°C | 6.8°C | 106 mm |
| February | 15°C | 1°C | 7.9°C | 101 mm |
| March | 19°C | 5°C | 11.9°C | 114 mm |
| April | 24°C | 9°C | 16.6°C | 82 mm |
| May | 28°C | 14°C | 21.1°C | 82 mm |
| June | 32°C | 19°C | 25.4°C | 117 mm |
| July | 34°C | 21°C | 27.2°C | 114 mm |
| August | 33°C | 21°C | 26.7°C | 113 mm |
| September | 30°C | 17°C | 23.5°C | 92 mm |
| October | 24°C | 10°C | 17.5°C | 79 mm |
| November | 18°C | 4°C | 11.2°C | 92 mm |
| December | 14°C | 2°C | 7.7°C | 109 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Calhoun Falls (21 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 USC00385660; 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 McCormick?
Normal highs sit between 65°F and 85°F in March, April, May and October.
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 USC00385660.
When is the last frost in McCormick?
In McCormick, the last spring frost (32°F) comes after March 28 in half of years and after April 13 in one year in ten; the first autumn frost comes before November 7 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 281 year in 10 after April 13; 9 in 10 after March 10
- First autumn frost, half of years before
- November 71 year in 10 before October 25; 9 in 10 before November 28
NOAA puts the median frost-free season at 226 days, and the season without a hard freeze (28°F) at 250 days.
A hard freeze (28°F) comes after March 16 in half of springs and before November 20 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts McCormick in zone 8a in ZIP code 29899.
Frost dates for every NOAA station in South Carolina · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00385660; 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 McCormick?
In a normal year in McCormick, 79 days a year reach 90°F (5 of them 100°F or more) and 58 nights fall to 32°F or colder.
- Days at 90°F or more
- 79a normal year
- Days at 100°F or more
- 5a normal year
- Nights at 32°F or colder
- 58a normal year
- Days that stay below freezing
- 1high of 32°F or less
Source: NOAA NCEI 1991-2020 annual normals, station USC00385660.
How sunny is McCormick?
Over a year 79% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around McCormick, 4.6 kWh per square metre a day. June is the sunniest month (82%) and February the cloudiest (72%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 75% | 2.8 |
| February | 72% | 3.4 |
| March | 75% | 4.5 |
| April | 80% | 5.7 |
| May | 80% | 6.2 |
| June | 82% | 6.4 |
| July | 82% | 6.1 |
| August | 80% | 5.6 |
| September | 80% | 4.9 |
| October | 80% | 4.0 |
| November | 79% | 3.1 |
| December | 73% | 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 McCormick need?
A normal year in McCormick brings 2,822 heating degree days, 47% fewer than the median U.S. place (5,373), and 1,954 cooling degree days, 2.2 times 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 5,330 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 645 | 1 |
| February | 527 | 1 |
| March | 369 | 13 |
| April | 144 | 49 |
| May | 32 | 186 |
| June | 1 | 382 |
| July | 0 | 494 |
| August | 0 | 468 |
| September | 7 | 286 |
| October | 115 | 67 |
| November | 390 | 6 |
| December | 591 | 1 |
| Year (annual) | 2,822 | 1,954 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00385660. 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 McCormick been warmer than normal lately?
2025 averaged 62.5°F, equal to the 1991-2020 normal of 62.5°F.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2025 | 62.5°F | at normal | 47.43 |
Source: observed years: ACIS, station USC00385660. A year counts only with all twelve months complete.
How does McCormick's climate compare?
McCormick is warmer than 29 of the other 72 places with their own NOAA record in South Carolina, and wetter than 24. Across the 7,247 U.S. stations with normals, its annual mean of 62.5°F is warmer than 81%.
In the Köppen classification computed from these normals, McCormick 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 McCormick share this climate record?
5 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.
- Lincolnton, GA1,431 people · 14 mi SW
- Bradley, SC207 people · 9 mi N
- Troy, SC87 people · 6 mi N
- Willington, SC84 people · 10 mi W
- Plum Branch, SC82 people · 5 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 McCormick's climate
What is the coldest month in McCormick?
January, with a normal high of 56°F and a normal low of 33°F. The warmest is July (92°F by day, 70°F at night).
Does it snow in McCormick?
Rarely. NOAA publishes no 1991-2020 snowfall normal for McCormick's NOAA station; the nearest record that keeps one, Calhoun Falls (21 miles away), records 1 inches of snow in a normal year.
What is the rainiest month in McCormick?
June, with 4.62 in of precipitation in a normal year; the driest is October with 3.11 in.
What plant hardiness zone is McCormick in?
The USDA's 2023 map puts McCormick in zone 8a in ZIP code 29899.
How late can frost come in McCormick?
In half of years the last 32°F night comes after March 28; in one year in ten it comes after April 13. Waiting until April 13 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
- Clarks Hill, SC18 miles from this station, 64.1°F a year
- Calhoun Falls, SC21 miles from this station, 62.1°F a year
- Edgefield, SC24 miles from this station, 63.7°F a year
- Greenwood, SC24 miles from this station, 61.2°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made