McClellanville, South Carolina climate: Normal weather by month, frost dates and records
McClellanville's normal year runs from 39°F January nights to 88°F July afternoons, with 55.6 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 18.4°C, January lows of 4°C, July highs of 31°C, 1,412 mm of precipitation a year.
- NOAA stationMcClellanville (7 mi NE)
- Station IDUSW00003728
- Location33.15°N 79.36°W
- Elevation9 ft (3 m)
- Population626
On October 23, the normal high in McClellanville is 74°F and the normal low 55°F, and the chance of measurable rain or snow is 32%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for McClellanville.
- Jan 58° 39°
- Feb 60° 42°
- Mar 66° 48°
- Apr 73° 55°
- May 80° 63°
- Jun 86° 70°
- Jul 88° 73°
- Aug 87° 72°
- Sep 83° 68°
- Oct 76° 58°
- Nov 67° 48°
- Dec 61° 42°
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 McClellanville each month?
July is the warmest month, with normal highs of 88°F; January the coldest, with normal lows of 39°F. The most precipitation falls in August (8.33 in), the least in November (2.82 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 58°F | 39°F | 48.5°F | 3.42 | 11 | <1 | 9 | 10 h 10 min |
| February | 60°F | 42°F | 51.0°F | 3.20 | 10 | <1 | 4 | 11 h |
| March | 66°F | 48°F | 56.9°F | 3.90 | 10 | <1 | 1 | 12 h |
| April | 73°F | 55°F | 64.1°F | 3.31 | 9 | <1 | <1 | 13 h |
| May | 80°F | 63°F | 71.6°F | 3.35 | 10 | 1 | <1 | 13 h 50 min |
| June | 86°F | 70°F | 77.8°F | 5.07 | 13 | 6 | <1 | 14 h 20 min |
| July | 88°F | 73°F | 80.6°F | 7.07 | 14 | 10 | <1 | 14 h 10 min |
| August | 87°F | 72°F | 79.6°F | 8.33 | 15 | 8 | <1 | 13 h 30 min |
| September | 83°F | 68°F | 75.6°F | 6.83 | 12 | 2 | <1 | 12 h 30 min |
| October | 76°F | 58°F | 66.7°F | 4.31 | 10 | <1 | <1 | 11 h 20 min |
| November | 67°F | 48°F | 57.3°F | 2.82 | 9 | <1 | 1 | 10 h 30 min |
| December | 61°F | 42°F | 51.5°F | 3.98 | 11 | <1 | 5 | 10 h |
| Year (annual) | 74°F | 57°F | 65.1°F | 55.59 | 134 | 27 | 20 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 14°C | 4°C | 9.2°C | 87 mm |
| February | 16°C | 5°C | 10.6°C | 81 mm |
| March | 19°C | 9°C | 13.8°C | 99 mm |
| April | 23°C | 13°C | 17.8°C | 84 mm |
| May | 27°C | 17°C | 22.0°C | 85 mm |
| June | 30°C | 21°C | 25.4°C | 129 mm |
| July | 31°C | 23°C | 27.0°C | 180 mm |
| August | 31°C | 22°C | 26.4°C | 212 mm |
| September | 29°C | 20°C | 24.2°C | 173 mm |
| October | 24°C | 14°C | 19.3°C | 109 mm |
| November | 19°C | 9°C | 14.1°C | 72 mm |
| December | 16°C | 6°C | 10.8°C | 101 mm |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00003728; 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 McClellanville?
Normal highs sit between 65°F and 85°F in March, April, May, September, October and November. Of those, April has the fewest days with rain (9).
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 USW00003728.
When is the last frost in McClellanville?
In McClellanville, the last spring frost (32°F) comes after February 28 in half of years and after March 25 in one year in ten; the first autumn frost comes before December 1 in half of years and before November 11 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
- February 281 year in 10 after March 25; 9 in 10 after February 1
- First autumn frost, half of years before
- December 11 year in 10 before November 11; 9 in 10 before December 31
NOAA puts the median frost-free season at 277 days, and the season without a hard freeze (28°F) at 312 days.
A hard freeze (28°F) comes after February 6 in half of springs and before December 25 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts McClellanville in zone 9a in ZIP code 29458, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, McClellanville's NOAA station is in zone 9a: the coldest night of a typical year reaches 22°F (18 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 USW00003728; 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 McClellanville?
In a normal year in McClellanville, 27 days a year reach 90°F, 20 nights fall to 32°F or colder and 134 days bring measurable precipitation.
- Days at 90°F or more
- 27a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 20a normal year
- Days that stay below freezing
- fewer than 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 134a normal year
The highest temperature in this station's record (since 2002) is 102°F, on June 20, 2011; the lowest is 16°F, on January 5, 2018.
The wettest calendar year on that record is 2003, with 79.95 in.
Source: NOAA NCEI 1991-2020 annual normals, station USW00003728; records: ACIS (NOAA Regional Climate Centers), station USW00003728. Records use complete months only; a month missing more than three days is left out.
How sunny is McClellanville?
Over a year 79% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around McClellanville, 4.6 kWh per square metre a day. July is the sunniest month (82%) and February the cloudiest (73%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 76% | 2.8 |
| February | 73% | 3.4 |
| March | 76% | 4.5 |
| April | 81% | 5.8 |
| May | 81% | 6.3 |
| June | 81% | 6.4 |
| July | 82% | 6.2 |
| August | 79% | 5.5 |
| September | 78% | 4.8 |
| October | 80% | 4.0 |
| November | 80% | 3.1 |
| December | 77% | 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 McClellanville need?
A normal year in McClellanville brings 2,029 heating degree days, 62% fewer than the median U.S. place (5,373), and 2,098 cooling degree days, 2.3 times the median (908). Three months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 5,918 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 513 | 2 |
| February | 395 | 3 |
| March | 268 | 17 |
| April | 96 | 67 |
| May | 13 | 218 |
| June | 0 | 386 |
| July | 0 | 485 |
| August | 0 | 454 |
| September | 2 | 321 |
| October | 64 | 118 |
| November | 254 | 21 |
| December | 425 | 6 |
| Year (annual) | 2,029 | 2,098 |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00003728. 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 McClellanville been warmer than normal lately?
2025 averaged 65.7°F, 0.6°F above the 1991-2020 normal of 65.1°F. 5 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 65.6°F | +0.5°F | 55.83 |
| 2022 | 65.9°F | +0.8°F | 50.23 |
| 2023 | 66.4°F | +1.3°F | 56.83 |
| 2024 | 66.9°F | +1.8°F | – |
| 2025 | 65.7°F | +0.6°F | – |
Source: observed years: ACIS, station USW00003728. A year counts only with all twelve months complete.
How does McClellanville's climate compare?
McClellanville is warmer than 65 of the other 72 places with their own NOAA record in South Carolina, and wetter than 59. Across the 7,247 U.S. stations with normals, its annual mean of 65.1°F is warmer than 88%.
In the Köppen classification computed from these normals, McClellanville 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.
What do McClellanville's other NOAA stations record?
One more NOAA station keeps 1991-2020 normals in or near McClellanville. This page uses McClellanville (7 mi NE); the other differs by site and elevation:
| Station | From this station | Elevation | Year | Jan low | Jul high | Precip. | Snow | Last frost |
|---|---|---|---|---|---|---|---|---|
| McClellanville station USC00385628 | 8 mi SW | 12 ft | 65.4°F | 36°F | 91°F | – | – | March 17 |
Source: NOAA NCEI 1991-2020 normals for each station. Last frost: the median last spring date of 32°F.
Questions about McClellanville's climate
What is the coldest month in McClellanville?
January, with a normal high of 58°F and a normal low of 39°F. The warmest is July (88°F by day, 73°F at night).
What is the rainiest month in McClellanville?
August, with 8.33 in of precipitation in a normal year; the driest is November with 2.82 in.
What plant hardiness zone is McClellanville in?
The USDA's 2023 map puts McClellanville in zone 9a in ZIP code 29458, the nearest ZIP area. By the same method at McClellanville's NOAA station, the coldest night of a typical year reaches 22°F (18 years, 1991-2020): zone 9a.
How late can frost come in McClellanville?
In half of years the last 32°F night comes after February 28; in one year in ten it comes after March 25. Waiting until March 25 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
- Georgetown, SC12 miles from this station, 65.1°F a year
- Jamestown, SC21 miles from this station, 64.6°F a year
- Andrews, SC23 miles from this station, 63.5°F a year
- Brookgreen Gardens, SC30 miles from this station, 63.8°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made