Franklin County is the seventh largest county in Virginia by area, consisting of 692.1 square miles of land and 9.5 square miles of water. Altitude in the county varies from 900 feet above sea level to more than 3,200 feet. The highest point is Cahas Knob, near the Blue Ridge Parkway. Altitude in the Town of Rocky Mount ranges from 1,200 feet to 1,420.
Three-fourths of the County is level to rolling.
Average January High Temperature - 47.9 degrees
Average January Low Temperature - 25.9 degrees
Average July High Temperature - 86.6 degrees
Average July Low Temperature - 62.8 degrees
Mean Annual Temperature - 56.0 degrees
Average Annual Rainfall - 44 inches
Average Annual Snowfall - 14 inches
Average Growing Season - 180 days
Average Relative Humidity - 66%
Frost-Free Nights - Average April 20 through October 16
Wind & Air
Air Quality - Franklin County is classified as an attainment area for all pollutants by both State and Federal agencies
Prevailing Winds - Westerly
Source: National Oceanic and Atmospheric Administration (NOAA)
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