Hunterdon County Climate
Hunterdon County, New Jersey
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
52.6°F
Annual Precip
50.8"
Annual Snowfall
21.5"
Extreme Heat Days
23
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
7a
Minimum winter temperature range for plant survival
3,269
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Hunterdon County
Climate Verdict
Hunterdon County has a mild, with an average annual temperature of 52.6°F, moderately wet with 50.8 inches of annual precipitation, occasional hot days — 22.76666666666667 per year above 90°F, moderate snowfall of 21.5 inches annually. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are cold, with January averaging 29.8°F. summers are warm — July averages 75.1°F. The 45°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Hunterdon County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Hunterdon County closely matches the New Jersey statewide average temperature of 53.6°F, it is somewhat wetter than average for New Jersey.
Climate Profile
About Hunterdon County Weather
Temperate conditions near the national norm
Hunterdon County averages 52.6°F annually, aligning closely with the national median for temperate climates. It experiences a balanced mix of seasonal shifts without the extreme year-round heat of the deep south.
Cooler than the Garden State average
The county stays cooler than the New Jersey average of 53.6°F. This reflects its inland, slightly higher elevation geography compared to coastal neighbors.
Consistency across the Delaware Valley
Hunterdon's 50.8 inches of rain is nearly identical to Hudson's 50.4 inches, though it is noticeably cooler overall. It shares a similar winter profile with Morris County to the north.
Chilly winters and brisk July days
January temperatures average a cold 29.8°F, supporting 21.5 inches of annual snowfall. Summer brings 23 days of extreme heat, though July averages a manageable 75.1°F.
Focus on winterization and insulation
Standard home insulation helps mitigate the sub-freezing January averages. Homeowners should maintain reliable snow removal equipment for the 21.5 inches of annual accumulation.
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.