Georgetown, South Carolina climate: Normal weather by month, frost dates and records
Georgetown's normal year runs from 37°F January nights to 91°F July afternoons, with 55.4 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 18.4°C, January lows of 3°C, July highs of 33°C, 1,408 mm of precipitation a year.
- NOAA stationGeorgetown County Airport
- Station IDUSC00383470
- Location33.32°N 79.32°W
- Elevation30 ft (9 m)
- Population8,821
On October 14, the normal high in Georgetown is 78°F and the normal low 57°F.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Georgetown.
- Jan 59° 37°
- Feb 62° 39°
- Mar 68° 44°
- Apr 76° 53°
- May 82° 61°
- Jun 88° 69°
- Jul 91° 73°
- Aug 90° 72°
- Sep 86° 67°
- Oct 78° 56°
- Nov 68° 45°
- Dec 60° 40°
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 Georgetown each month?
July is the warmest month, with normal highs of 91°F; January the coldest, with normal lows of 37°F. The most precipitation falls in July (7.09 in), the least in November (3.11 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 59°F | 37°F | 47.8°F | 3.55 | – | <1 | 12 | 10 h 10 min |
| February | 62°F | 39°F | 50.2°F | 3.55 | – | <1 | 8 | 11 h |
| March | 68°F | 44°F | 55.8°F | 3.62 | – | <1 | 4 | 12 h |
| April | 76°F | 53°F | 64.4°F | 3.35 | – | <1 | <1 | 13 h |
| May | 82°F | 61°F | 71.8°F | 3.37 | – | 4 | <1 | 13 h 50 min |
| June | 88°F | 69°F | 78.3°F | 5.43 | – | 15 | <1 | 14 h 20 min |
| July | 91°F | 73°F | 81.8°F | 7.09 | – | 20 | <1 | 14 h 10 min |
| August | 90°F | 72°F | 81.1°F | 6.94 | – | 18 | <1 | 13 h 30 min |
| September | 86°F | 67°F | 76.4°F | 6.49 | – | 8 | <1 | 12 h 30 min |
| October | 78°F | 56°F | 66.6°F | 5.00 | – | 1 | <1 | 11 h 20 min |
| November | 68°F | 45°F | 56.5°F | 3.11 | – | <1 | 3 | 10 h 30 min |
| December | 60°F | 40°F | 50.1°F | 3.93 | – | <1 | 7 | 10 h |
| Year (annual) | 76°F | 55°F | 65.1°F | 55.43 | – | 67 | 33 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 15°C | 3°C | 8.8°C | 90 mm |
| February | 16°C | 4°C | 10.1°C | 90 mm |
| March | 20°C | 7°C | 13.2°C | 92 mm |
| April | 25°C | 12°C | 18.0°C | 85 mm |
| May | 28°C | 16°C | 22.1°C | 86 mm |
| June | 31°C | 20°C | 25.7°C | 138 mm |
| July | 33°C | 23°C | 27.7°C | 180 mm |
| August | 32°C | 22°C | 27.3°C | 176 mm |
| September | 30°C | 20°C | 24.7°C | 165 mm |
| October | 25°C | 13°C | 19.2°C | 127 mm |
| November | 20°C | 7°C | 13.6°C | 79 mm |
| December | 16°C | 4°C | 10.1°C | 100 mm |
NOAA publishes no 1991-2020 snowfall normal for this station, and no record within 25 miles keeps one, so snow is left out here rather than estimated.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00383470; 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 Georgetown?
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 USC00383470.
When is the last frost in Georgetown?
In Georgetown, the last spring frost (32°F) comes after March 12 in half of years and after March 30 in one year in ten; the first autumn frost comes before November 24 in half of years and before November 6 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 121 year in 10 after March 30; 9 in 10 after February 18
- First autumn frost, half of years before
- November 241 year in 10 before November 6; 9 in 10 before December 19
NOAA puts the median frost-free season at 258 days, and the season without a hard freeze (28°F) at 293 days.
A hard freeze (28°F) comes after February 25 in half of springs and before December 10 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Georgetown in zone 8b in ZIP code 29440, 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 USC00383470; 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 Georgetown?
In a normal year in Georgetown, 67 days a year reach 90°F (2 of them 100°F or more) and 33 nights fall to 32°F or colder.
- Days at 90°F or more
- 67a normal year
- Days at 100°F or more
- 2a normal year
- Nights at 32°F or colder
- 33a normal year
- Days that stay below freezing
- fewer than 1high of 32°F or less
Source: NOAA NCEI 1991-2020 annual normals, station USC00383470.
How sunny is Georgetown?
Over a year 79% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Georgetown, 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 Georgetown need?
A normal year in Georgetown brings 2,192 heating degree days, 59% fewer than the median U.S. place (5,373), and 2,244 cooling degree days, 2.5 times the median (908). Four months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 5,993 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 537 | 4 |
| February | 420 | 5 |
| March | 307 | 21 |
| April | 98 | 82 |
| May | 13 | 222 |
| June | 0 | 401 |
| July | 0 | 521 |
| August | 0 | 498 |
| September | 2 | 346 |
| October | 68 | 119 |
| November | 278 | 21 |
| December | 468 | 6 |
| Year (annual) | 2,192 | 2,244 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00383470. 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.
How does Georgetown's climate compare?
Georgetown is warmer than 65 of the other 72 places with their own NOAA record in South Carolina, and wetter than 58. 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, Georgetown 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 Georgetown share this climate record?
DeBordieu Colony has no NOAA station with 1991-2020 normals of its 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.
- DeBordieu Colony, SC748 people · 9 mi NE
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 Georgetown's climate
What is the coldest month in Georgetown?
January, with a normal high of 59°F and a normal low of 37°F. The warmest is July (91°F by day, 73°F at night).
What is the rainiest month in Georgetown?
July, with 7.09 in of precipitation in a normal year; the driest is November with 3.11 in.
What plant hardiness zone is Georgetown in?
The USDA's 2023 map puts Georgetown in zone 8b in ZIP code 29440, the nearest ZIP area.
How late can frost come in Georgetown?
In half of years the last 32°F night comes after March 12; in one year in ten it comes after March 30. Waiting until March 30 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
- McClellanville, SC12 miles from this station, 65.1°F a year
- Andrews, SC17 miles from this station, 63.5°F a year
- Brookgreen Gardens, SC19 miles from this station, 63.8°F a year
- Jamestown, SC22 miles from this station, 64.6°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made