Hillsborough, NC

Climate overview — based on NOAA 1991-2020 normals from DURHAM 11 W, NC US.

Cfa Humid subtropical climate 8b USDA hardiness Zone 8b

Year-round temperatures (°F)

30° 50° 70° 90° J F M A M J J A S O N D
Avg high Avg low

Climate summary

Hillsborough has an annual average temperature of 59.1°F with about 46.7 inches of precipitation per year. The warmest month is July (average high 88.0°F), and the coldest is January (average low 30.1°F). September is typically the wettest month (5.59 in) and February the driest (3.27 in).

Pleasant months
1 / 12
avg high 65–80°F, low ≥ 50°F
Annual swing
37.5°F
warmest to coldest month
Heating need
3,297
Cooling need
1,179

Best time to visit Hillsborough

Full guide →

Climate change signal

All-time records →

211 of 366 (57.7%) of Hillsborough's all-time daily heat records have been set since 2015. If records were spread evenly across the station's history, only about 5% would fall in any given decade.

2000s
54
2010s
204
2020s
108

Bars: number of all-time daily heat records still standing that were set in each decade.

Monthly averages

Month Avg High Avg Low Avg Temp Precipitation Snow Rainy days
January 50.3°F 30.1°F 40.2°F 3.44 in 10
February 54.1°F 32.3°F 43.2°F 3.27 in 11
March 61.6°F 38.7°F 50.2°F 4.24 in 12
April 70.9°F 47.2°F 59.1°F 3.95 in 9
May 77.2°F 55.5°F 66.3°F 3.79 in 11
June 84.3°F 63.1°F 73.7°F 4.22 in 10
July 88.0°F 67.4°F 77.7°F 4.21 in 11
August 86.2°F 66.4°F 76.3°F 3.79 in 10
September 80.4°F 60.3°F 70.3°F 5.59 in 9
October 71.3°F 48.3°F 59.8°F 3.34 in 8
November 61.1°F 38.4°F 49.7°F 3.31 in 9
December 52.9°F 32.8°F 42.9°F 3.55 in 11

Climate twins of Hillsborough

Why these? →

The most climatically similar US cities at least 140 miles away (by monthly temperature + precipitation pattern).

Frost dates
Last spring / first fall frost
All-time records
Hottest, coldest, wettest
Planting calendar
What to plant, and when

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