Joseph H. Rainey House · Photo: Federal, likely Cecil N. McKithan · Public domainGeorgetown’s winters are milder than most of the U.S.; July afternoons average 90°
A typical July afternoon reaches 90°, a January night drops to 37°.
A year in Georgetown at a glance
Each month’s typical high and low, and what it brings.
What stands out about Georgetown’s climate
Compared with towns across the U.S., with Georgetown’s place in South Carolina beside it.
What a year in Georgetown feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 258 frost-free days a year
In half of years the last 32° night comes by March 12 and the first by November 24. Frost and day counts come from NOAA’s station at Georgetown Co Airport, 5 miles from the town’s center, at about the same height.
The 2023 USDA map puts Georgetown’s center in zone 8b: the coldest night of a typical winter, averaged over 1991–2020, reaches about 20°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
About 53 inches of rain a year
August is the wettest month and November the driest.
Rain + melted snow by month
Inches of water
Heating and cooling a home in Georgetown
49% of the work is heating, so air conditioning is the bigger bill. Months averaging under 55° run from December through February.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Georgetown Co Airport.
Living with Georgetown’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
258 frost-free days in zone 8b. The last frost comes by Mar 12 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Nov 24.
Months with highs of 62–84° and lows of 40° or more: March, April, May, September, October and November. 1.9 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Georgetown from natural hazards, hurricanes are the largest share (68%); heat waves, cold waves, winter storms and ice storms together are 2%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Georgetown and similar climates
TownRatings has no climate map of the towns around Georgetown yet.
Temperatures and precipitation come from NOAA’s 5 km grid; snow and day counts from the stations named on this page.
Warmer than it used to be
The last 30 years in Georgetown averaged 0.7° warmer than the 1900s. The biggest change is in December (+2.0°).
A smaller shift than in 94% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.
How Georgetown compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Georgetown’s place among South Carolina’s.
Georgetown weather by month
Highs, lows and precipitation from NOAA’s grid at Georgetown’s center. 1991–2020 normals.
| Month | High | Low | Rain + melt | 30-yr range |
|---|---|---|---|---|
| January | 58° | 37° | 3.5" | 41° – 53° |
| February | 60° | 40° | 3.3" | 42° – 58° |
| March | 67° | 45° | 3.7" | 49° – 63° |
| April | 74° | 53° | 3.4" | 60° – 68° |
| May | 81° | 61° | 3.7" | 68° – 75° |
| June | 87° | 69° | 5.4" | 73° – 82° |
| July | 90° | 73° | 6.3" | 79° – 84° |
| August | 88° | 72° | 6.7" | 77° – 84° |
| September | 84° | 67° | 5.9" | 73° – 80° |
| October | 76° | 56° | 4.6" | 63° – 71° |
| November | 67° | 45° | 3.1" | 51° – 62° |
| December | 61° | 39° | 3.8" | 40° – 61° |
| Year | 74° | 55° | 53.4" |
How much a month can swing
A normal is an average. December swings the most: from 1991 to 2020 its average ranged from 40° to 61°. July is the most reliable, staying within 5°.
Where Georgetown’s numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at Georgetown’s center.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Georgetown Co Airport, 5 miles from the town’s center, at about the same height; the nearest station that passes our checks for distance, height and agreement with the grid.
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about Georgetown’s climate
What is the weather like in Georgetown?
A typical July afternoon reaches 90°, a January night drops to 37°. Milder January nights than 84% of U.S. towns; hotter July afternoons than 75% of U.S. towns.
How cold does it get in Georgetown in winter?
January nights average 37°. About 33 nights a year reach 32° or below. In the coldest January of the last 30 years the month averaged 41°.
How hot does it get in Georgetown?
July, with a typical high of 90° and a low of 73°. About 67 days a year reach 90° and 2 reach 100° (Georgetown Co Airport).
When is the first and last frost in Georgetown?
In half of years the last spring frost (32°) comes by March 12 and the first fall frost by November 24, about 258 frost-free days, at Georgetown Co Airport.
What growing zone is Georgetown in?
Zone 8b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 20°.
What is the best time of year to visit Georgetown?
By one simple rule (highs of 62–84° and lows of 40° or more), March, April, May, September, October and November. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Georgetown getting warmer?
Yes: 1991–2020 averaged 0.7° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 94% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Georgetown.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.