Harnett County Climate
Harnett County, North Carolina
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
62.3°F
Annual Precip
50.1"
Annual Snowfall
2.1"
Extreme Heat Days
49
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
8a
Minimum winter temperature range for plant survival
5,311
Excellent for heat-loving crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Harnett County
Climate Verdict
Harnett County has a warm, averaging 62.3°F year-round, moderately wet with 50.1 inches of annual precipitation, occasional hot days — 49.1 per year above 90°F, light snow averaging 2.1 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are mild, with January temperatures averaging 43.1°F. summers are hot, with July averaging 81.3°F. The 38°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
The moderate temperatures support hiking, cycling, and camping comfortably in spring, summer, and fall.
Regional Context
Harnett County closely matches the North Carolina statewide average temperature of 59.3°F.
Climate Profile
About Harnett County Weather
A hot spot in the South
Harnett County is significantly warmer than the national median with an annual average of 62.3°F. It represents the warmer tier of the humid subtropical climate zone in the United States.
Warmest of the central counties
At 62.3°F, Harnett is three degrees warmer than the North Carolina state average. It is also one of the few inland counties where January temperatures stay well above 40°F on average.
Intense summer heat compared to neighbors
With 49 extreme heat days, Harnett is significantly hotter than Guilford or Granville. It matches the state average for rain almost perfectly, receiving 50.1 inches compared to the state's 51.5 inches.
Sweltering summers and mild winters
July is hot with an average of 81.3°F, and the county hits the 90°F mark 49 times a year. Winters are short and mild, with a January average of 43.1°F and minimal snowfall of 2.1 inches.
Invest in cooling
The 49 days of extreme heat make high-quality air conditioning a non-negotiable requirement for residents. Because the county receives 50.1 inches of rain, residents should also prepare for high humidity during the peak summer months.
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.