Salem County Climate
Salem County, New Jersey
Avg Annual Temp
55.9°F
Annual Precip
46.6"
Annual Snowfall
13.3"
Extreme Heat Days
35.2
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Salem County Weather
Warmer than the National Average
Salem County maintains an annual average temperature of 55.9°F, which sits notably higher than the United States median. This humid subtropical climate experiences milder overall conditions than many mid-Atlantic peers.
One of New Jersey's Warmest Spots
With an annual average of 55.9°F, Salem exceeds the New Jersey state average of 53.6°F by over two degrees. It ranks as one of the warmest counties in the state, benefiting from its southern position.
Milder Winters than Northern Neighbors
Salem's winter average of 36.6°F is significantly warmer than Sussex County's 29.2°F. While northern counties face heavy snow, Salem records just 13.3 inches annually, the lowest among its regional counterparts.
Sizzling Summers and Soft Winters
Summers are intense with 35 extreme heat days reaching 90°F or higher, peaking at a July average of 77.4°F. Conversely, winters are gentle, seeing only about a foot of snow per year.
Prioritize Cooling and Moderate Gear
Residents should invest heavily in efficient HVAC systems to manage more than a month of extreme summer heat. Heavy snow gear is rarely needed here, but high-quality rain shells help navigate the 46.6 inches of annual precipitation.
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.