Salem County Climate
Salem County, New Jersey
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
55.9°F
Annual Precip
46.6"
Annual Snowfall
13.3"
Extreme Heat Days
35
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
7b
Minimum winter temperature range for plant survival
3,859
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Salem County
Climate Verdict
Salem County has a mild, with an average annual temperature of 55.9°F, moderately wet with 46.6 inches of annual precipitation, occasional hot days — 35.2 per year above 90°F, light snow averaging 13.3 inches per year. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 34.4°F. summers are warm — July averages 77.4°F. The 43°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
The moderate temperatures support hiking, cycling, and camping comfortably in spring, summer, and fall.
Regional Context
Salem County closely matches the New Jersey statewide average temperature of 53.6°F.
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 sources: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020. Forecast and alert data from National Weather Service API. Air quality data from Open-Meteo.
Climate normals are 30-year averages of weather variables. Station data is aggregated to county level. Forecasts and alerts are fetched live and may change frequently. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.