Gloucester County Climate
Gloucester County, New Jersey
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
54.9°F
Annual Precip
—
Annual Snowfall
—
Extreme Heat Days
20
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
7b
Minimum winter temperature range for plant survival
3,696
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Gloucester County
Climate Verdict
Gloucester County has a mild, with an average annual temperature of 54.9°F, rare extreme heat with only 19.9 days above 90°F annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 33.2°F. summers are warm — July averages 77.0°F. The 44°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Gloucester County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Gloucester County closely matches the New Jersey statewide average temperature of 53.6°F.
Climate Profile
About Gloucester County Weather
Temperate and Warmly Situated
Gloucester County's 54.9°F average temperature sits about two degrees above the national median. This indicates a climate with mild winters and warm, humid summers.
A Warm Southern NJ Pocket
The county is significantly warmer than the New Jersey state average of 53.6°F. It ranks alongside Atlantic County as one of the state's warmer regions.
Matching the Atlantic Profile
Gloucester matches Atlantic County's 54.9°F average but experiences slightly fewer extreme heat days. It remains warmer than Burlington and Cumberland on an annual basis.
Warm Summers and Moderate Januaries
July averages a hot 77.0°F with 20 days of extreme heat exceeding 90°F. January stays relatively moderate with an average temperature of 33.2°F.
Focus on Summer Air Quality
While precipitation and snow data are limited, the 77.0°F July average demands reliable air conditioning. Residents should plan for 20 days of extreme heat annually by checking cooling systems early.
Frequently Asked Questions
What is the average temperature in Gloucester County?
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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.