Harnett County Climate
Harnett County, North Carolina
Avg Annual Temp
62.3°F
Annual Precip
50.1"
Annual Snowfall
2.1"
Extreme Heat Days
49.1
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
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 source: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020.
Climate normals are 30-year averages of weather variables computed from 1991 to 2020. Station data is aggregated to county level using spatial averaging. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.