Chesterfield’s Climate and Weather
The classification of Chesterfield’s climate is Modified Continental. Summers are warm and humid, and winters are generally mild.
The mountains to the west act as a partial barrier to outbreaks of cold, continental air in winter. Cold winter air is delayed long enough to be modified, then further warmed in its approach to the area.
The open waters of the Chesapeake Bay and Atlantic Ocean contribute to the humid summers and mild winters.
The coldest weather occurs typically in late December and January when low temperatures usually average in the upper 20s and the high temperatures in the upper 40s.
Temperatures seldom lower to zero, but there have been several occurrences of below-zero temperatures.
Summertime high temperatures above 100ºF are not uncommon but do not occur every year.
Four Distinct Seasons in Chesterfield
Selected Climatic Statistics for Chesterfield
- January Average Low Temperature: 28.3° F
- July Average High Temperature: 89.7° F
- Average Annual Temperature: 57.7° F
- Average Annual High Temperature: 69.6° F
- Average Annual Low Temperature: 48.1° F
- Average Annual Precipitation: 43.6″
- Average Annual Snowfall: 10.3″
- Days with Precipitation (annually): 114
Mean Annual Sunshine Hours: 2,829
- Percent Possible Sunshine: 64%
- Annual Heating Degree Days (base 60): 2,892
- Annual Cooling Degree Days (base 60): 2,291
- Average Relative Humidity: 70%
- Prevailing Winds: N.W., 7.7 mph
