New Jersey Climate Data
NOAA 30-year climate normals for all 21 counties.
State Avg Temp
53.6°F
Hottest County
Cape May County
56.0°F avg
Coldest County
Sussex County
50.0°F avg
Wettest County
Hunterdon County
50.8" precip
All New Jersey Counties
Atlantic County
54.9°F avg
Bergen County
55.4°F avg
Burlington County
54.8°F avg
Camden County
Data pending
Cape May County
56.0°F avg
Cumberland County
54.6°F avg
Essex County
53.0°F avg
Gloucester County
54.9°F avg
Hudson County
54.8°F avg
Hunterdon County
52.6°F avg
Mercer County
53.5°F avg
Middlesex County
53.7°F avg
Monmouth County
53.9°F avg
Morris County
51.8°F avg
Ocean County
53.8°F avg
Passaic County
51.6°F avg
Salem County
55.9°F avg
Somerset County
51.8°F avg
Sussex County
50.0°F avg
Union County
55.0°F avg
Warren County
51.1°F avg
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.