Climate Comfort Score
83/100
Excellent
NOAA 1991–2020 normals 64°F annual avg 2 stations
Aiken, SC Climate
Explore average temperature, rainfall, and comfort score sourced from NOAA NCEI's 1991–2020 climate normals →
- 64°F
- Avg annual temp
- 83/100
- Comfort score
- 50.8"
- Annual precip
- 231d
- Growing season
30-year climate normals from 2 weather stations (1991-2020).
The climate verdict for Aiken
Aiken, South Carolina averages 64°F a year and scores 83/100 on the comfort index - excellent, milder than 85% of U.S. cities.
- 64°F
- average temperature, NOAA 1991-2020 normal
- 83/100
- comfort score, milder than 85% of U.S. cities
- 50.8"
- annual precipitation · 1" snow
- 231 days
- frost-free days per growing season
Based on NOAA U.S. Climate Normals (1991–2020) - 30-year averages describing the typical year, not a forecast.
Avg Temperature
64°F (18°C)
Avg High
75°F
Avg Low
53°F
Annual Precip
50.8"
Annual Snow
0.7"
Comfort Score
83/100
Excellent
Avg Annual Temperature
64°F
30-year mean (NOAA NCEI)
Annual Precipitation
50.8"
Plus 0.7" of snow
Comfort score vs national 100-point ceiling (Aiken) 83.0%
National median (63)
PlainClimate composite, temperature mildness, humidity, precipitation, extreme-weather frequency. Excellent for the Aiken area.
How Aiken compares to every U.S. city
Aiken's comfort score vs. all U.S. cities
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
83 Top 15% higher than 85% of 6,915 US cities
Each bar is a band; taller bars hold more US cities. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
Warming context for Aiken
MethodologyHow the U.S. land temperature anomaly tracks against the global mean since 1900. The current NOAA 1991-2020 normal for Aiken captures average conditions across the spread shown, the most recent decade is warmer than the 30-year mean.
- United States land mean (NOAA NCEI) +0.11 °C/decade
- Global anomaly (NASA GISTEMP) +0.11 °C/decade
- Paris Agreement thresholds 1.5°C / 2.0°C
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 56°F (13°C) | 35°F (1°C) | 45°F (7°C) | 4.6" | 0.7" | 13.9 | 0.0 |
| February | 60°F (16°C) | 38°F (3°C) | 49°F (9°C) | 4.2" | 0.0" | 9.9 | 0.0 |
| March | 68°F (20°C) | 44°F (6°C) | 56°F (13°C) | 4.7" | 0.0" | 5.1 | 0.0 |
| April | 76°F (25°C) | 52°F (11°C) | 64°F (18°C) | 3.1" | 0.0" | 1.0 | 1.5 |
| May | 84°F (29°C) | 61°F (16°C) | 72°F (22°C) | 3.5" | 0.0" | 0.0 | 9.7 |
| June | 89°F (32°C) | 69°F (21°C) | 79°F (26°C) | 5.4" | 0.0" | 0.0 | 18.4 |
| July | 93°F (34°C) | 72°F (22°C) | 82°F (28°C) | 5.6" | 0.0" | 0.0 | 25.7 |
| August | 90°F (32°C) | 71°F (21°C) | 81°F (27°C) | 5.0" | 0.0" | 0.0 | 20.4 |
| September | 85°F (30°C) | 65°F (18°C) | 75°F (24°C) | 4.1" | 0.0" | 0.0 | 9.7 |
| October | 77°F (25°C) | 53°F (11°C) | 65°F (18°C) | 2.9" | 0.0" | 1.1 | 0.7 |
| November | 67°F (19°C) | 41°F (5°C) | 54°F (12°C) | 3.4" | 0.0" | 6.3 | 0.0 |
| December | 59°F (15°C) | 36°F (2°C) | 47°F (8°C) | 4.3" | 0.0" | 13.4 | 0.0 |
Monthly Precipitation
Average monthly rainfall and snowfall
January 4.6"
Snow: 0.7"
9.6 days with precipitation
February 4.2"
8.2 days with precipitation
March 4.7"
8.2 days with precipitation
April 3.1"
6.9 days with precipitation
May 3.5"
7.2 days with precipitation
June 5.4"
10.6 days with precipitation
July 5.6"
10.6 days with precipitation
August 5.0"
11.1 days with precipitation
September 4.1"
8.2 days with precipitation
October 2.9"
6.2 days with precipitation
November 3.4"
7.0 days with precipitation
December 4.3"
9.1 days with precipitation
Frost Dates & Growing Season
First Fall Freeze
November 7
50% probability date
Last Spring Freeze
March 21
50% probability date
Growing Season
231 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
2,486
Higher = more heating needed
Cooling Degree Days
2,186
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
What Aiken's climate means for you
Aiken runs 64°F a year - peaking in July, coldest in January.
- Gardeners get about 231 frost-free days, with the last spring freeze near March 21 - plan the planting calendar around it, not the regional average.
- Energy bills track 2,486 heating and 2,186 cooling degree days a year, higher means the furnace or AC runs more.
- Comparing places to live? Line this city up against nearby cities and the national rankings. See rankings
These are 30-year NOAA normals (1991–2020) - the typical year, not a forecast for any specific season.
Climate Guides
Climate Insight: Aiken, SC
Based on 2 weather stations feeding NOAA's 1991–2020 climate normals, Aiken, South Carolina averages 64°F a year, ranging from a mean daily high of 75°F to a mean daily low of 53°F. July is typically the warmest month of the year, while January is the coldest. Because these figures are thirty-year averages rather than any single year's readings, they describe the typical month, not a forecast for it.
Anyone planning to live, garden, or travel in Aiken should weigh precipitation alongside temperature: the annual average runs 50.8 inches, with 0.7 inches typically falling as snow. The frost-free season averages 231 days, which directly shapes the planting calendar and growing potential for the area, with the last spring freeze near March 21 and the first fall freeze near November 7. And on the energy front, 2,486 heating degree days and 2,186 cooling degree days tell the story of how often furnaces and air conditioners run during a normal year.
On PlainClimate's composite comfort index, Aiken scores 83/100 (Excellent), a blended measure that weighs temperature mildness, precipitation moderation, and extreme-weather frequency against one another. Use the monthly tables above to plan around specific windows, shoulder seasons for mild highs and lows, peak summer for July-driven heat, or deep winter for January-driven cold. All figures here are thirty-year averages: any single year may run warmer, wetter, drier, or cooler than the normal, so treat them as planning guidance rather than forecasts.
Frequently Asked Questions
What is the average temperature in Aiken, SC? ▼
The average annual temperature in Aiken, South Carolina is 64°F. The warmest month averages 93°F (34°C) and the coldest averages 35°F (1°C).
How much rain does Aiken get? ▼
Aiken receives 50.8 inches of precipitation annually, including 0.7 inches of snow. Based on NOAA 30-year climate normals (1991-2020).
What is the comfort score for Aiken? ▼
Aiken has a climate comfort score of 83/100 (Excellent), milder than 85% of U.S. cities in the PlainClimate database.
When is the growing season in Aiken? ▼
Aiken has approximately 231 frost-free days per year, with the last spring freeze around March 21 and the first fall freeze around November 7.
How much energy does heating and cooling require in Aiken? ▼
Aiken has 2,486 heating degree days and 2,186 cooling degree days annually, a fairly balanced heating/cooling split. See our <a href="/guides/reading-weather-data/" class="underline hover:text-brand-600">guide to reading weather data</a> for what these figures mean.
Where does this Aiken climate data come from? ▼
NOAA U.S. Climate Normals v1.0.1 (1991-2020), from 2 weather stations near Aiken.
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). Station: USC00380074. For informational purposes only.
Read our methodology - how this data is sourced, computed, and verified.
Related
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainClimate Editorial
Every figure on PlainClimate is rendered directly from NOAA 1991-2020 U.S. Climate Normals data, no number is typed in by an editor. This page draws directly on NOAA 1991-2020 U.S. Climate Normals data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.