South Carolina has an average annual temperature of
62.8°F
(across all 26 cities) with approximately
1227 mm of annual precipitation
and average humidity of 76%.
The warmest city is Lancaster
with average July highs of 101.8°F,
while Easley
is the coldest with average January lows of 13.1°F.
This page covers 45 years of NASA POWER climate data (1981–2025)
including temperature, rainfall, humidity, wind speed, and solar radiation.
Jul is typically the warmest month across South Carolina with average highs around
97.9°F, while
Jan is the coldest with average lows near
20.3°F.
Aug is the wettest month with approximately
140 mm of rainfall on average.
Month
Max Temp
Min Temp
Avg Temp
Rain (mm)
Humidity
Wind (m/s)
Solar (kWh/m²)
Jan
68.5°F
20.3°F
44.4°F
99
81%
1.8
2.70
Feb
71.2°F
24.6°F
48°F
95
81%
1.9
3.40
Mar
76.6°F
28.4°F
52.5°F
102
79%
1.9
4.50
Apr
82.8°F
37°F
59.9°F
84
76%
1.8
5.70
May
89.8°F
48°F
68.9°F
90
73%
1.6
6.20
Jun
95.7°F
60.1°F
77.9°F
120
73%
1.5
6.30
Jul
97.9°F
66.7°F
82.4°F
130
72%
1.4
6.10
Aug
96.8°F
64.2°F
80.6°F
140
74%
1.4
5.50
Sep
92.3°F
54.3°F
73.4°F
111
74%
1.6
4.80
Oct
85.6°F
40.3°F
63°F
90
74%
1.6
4.00
Nov
77.5°F
30.6°F
54.1°F
81
76%
1.7
3.00
Dec
71.1°F
24.3°F
47.7°F
99
81%
1.7
2.40
📈 South Carolina Yearly Climate Trends
🌡️ Annual Temperature Trend
State-wide avg annual high & low · Last 10 years
📈 South Carolina Long-Term Climate Trends (1981–2025)
This chart shows how South Carolina's average temperatures have shifted across 45 years.
Use the range buttons to focus on recent decades or view the full historical record.
Data is averaged across all 26 cities in the state.
🌧️ Annual Precipitation Trend
State-wide avg annual precipitation · Last 10 years · mm/year
🔗 Explore Cities in South Carolina
Browse detailed weather history, monthly averages, and 45-year climate trends for every city in South Carolina.
Myrtle Beach is the wettest city in South Carolina with approximately 1453 mm of annual precipitation on average. View Myrtle Beach weather history →
What is the warmest month in South Carolina?▼
Jul is the warmest month across South Carolina, with state-wide average highs of 97.9°F and average lows of 66.7°F.
How many cities in South Carolina have weather data?▼
TownPillar has historical weather data for 26 cities in South Carolina, covering 45 years of NASA POWER climate records from 1981 to 2025.
Which month has the most sunshine in South Carolina?▼
Jun is the sunniest month across South Carolina with an average solar radiation of 6.30 kWh/m²/day state-wide. This solar radiation data from NASA POWER is useful for solar energy planning, agriculture, and understanding seasonal sunshine availability.
Where does this climate data come from?▼
All data is sourced from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis data. It includes monthly temperature, precipitation, humidity, wind speed, and solar radiation at 0.5° × 0.625° spatial resolution.
📚 Data Source
All weather data is sourced from NASA POWER (Prediction of Worldwide Energy Resources). Data covers 45 years (1981–2025) across 26 cities in South Carolina at monthly temporal resolution.