Berkeley County Climate
Berkeley County, South Carolina
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
66.1°F
Annual Precip
52.3"
Annual Snowfall
0.0"
Extreme Heat Days
85
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
8b
Minimum winter temperature range for plant survival
6,302
Excellent for heat-loving crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Berkeley County
Climate Verdict
Berkeley County has a warm, averaging 66.1°F year-round, moderately wet with 52.3 inches of annual precipitation, significant summer heat with 85.2 days annually above 90°F, virtually no measurable snowfall. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are mild, with January temperatures averaging 48.6°F. summers are hot, with July averaging 83.4°F. The 35°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
Summer outdoor activities should be planned for early morning or evening to avoid extreme heat.
Regional Context
Berkeley County is 3.3°F warmer than the South Carolina statewide average of 62.8°F, it is somewhat wetter than average for South Carolina, the county experiences 22.13934108527131 more extreme heat days than the state average.
Climate Profile
About Berkeley County Weather
Hot and wet Lowcountry climate
Berkeley averages 66.1°F, which is far warmer than the national median temperature. This humid subtropical area is quite wet, receiving 52.3 inches of rain annually.
Well above the state average heat
Berkeley is much warmer than the state average of 62.8°F, reflecting its typical Lowcountry climate. It is among the top-tier counties for heat in South Carolina.
Wetter than the coastal average
It is slightly cooler than coastal Beaufort at 67.5°F but wetter than the state average. The county experiences more rainfall at 52.3 inches than many of its inland neighbors.
Nearly three months of extreme heat
Summers are grueling with 85 extreme heat days and a July average of 83.4°F. Winters stay mild at 50.2°F, and the county records zero annual snowfall on average.
Prioritize drainage and high-efficiency AC
With 85 days of 90-degree heat, high-efficiency cooling and moisture control are vital for every home. Water management is also key given the high 52.3-inch annual rainfall.
Frequently Asked Questions
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Data sources: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020. Forecast and alert data from National Weather Service API. Air quality data from Open-Meteo.
Climate normals are 30-year averages of weather variables. Station data is aggregated to county level. Forecasts and alerts are fetched live and may change frequently. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.