Richland County Climate
Richland County, South Carolina
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
63.9°F
Annual Precip
45.9"
Annual Snowfall
0.5"
Extreme Heat Days
84
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
8b
Minimum winter temperature range for plant survival
5,729
Excellent for heat-loving crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Richland County
Climate Verdict
Richland County has a warm, averaging 63.9°F year-round, moderately wet with 45.9 inches of annual precipitation, significant summer heat with 83.5 days annually above 90°F, light snow averaging 0.5 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are mild, with January temperatures averaging 45.4°F. summers are hot, with July averaging 82.0°F. The 37°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
Richland County closely matches the South Carolina statewide average temperature of 62.8°F, it is somewhat drier than average for South Carolina, the county experiences 20.43934108527131 more extreme heat days than the state average.
Climate Profile
About Richland County Weather
High Heat in the Palmetto State
Richland County averages 63.9°F annually, placing it nearly 10 degrees above the national median temperature. It receives 45.9 inches of annual precipitation, which is typical for the humid subtropical South. This climate supports a long growing season but brings intense summer humidity.
A Core Part of the Hot Midlands
Richland's 63.9°F average is higher than the South Carolina state average of 62.8°F. The county is slightly drier than the rest of the state, with 45.9 inches of rain versus the 48.9-inch state average. It is frequently among the warmest metropolitan areas in the region.
Warmer Than Surrounding Rural Counties
Richland is warmer than Newberry (62.6°F) and Sumter (63.2°F), likely due to the urban heat island effect in Columbia. It experiences 84 extreme heat days, far more than Newberry's 59 days. This makes Richland one of the most heat-stressed counties in the Midlands.
Intense Summers and Mild Winters
July is hot with an 82.0°F average and 84 days reaching over 90°F. Snow is rare, with only 0.5 inches recorded annually on average. Winters are very manageable, with a December-to-February average temperature of 47.2°F.
Prepare for Prolonged Heat Waves
Residents need high-performing cooling systems to withstand 84 days of 90°F+ temperatures. With only 0.5 inches of snow, heavy winter gear is rarely needed, though light jackets are used for the 45.4°F January average. Irrigation may be necessary during the hot summers to supplement the 45.9 inches of rain.
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.