Hunterdon County Climate
Hunterdon County, New Jersey
Avg Annual Temp
52.6°F
Annual Precip
50.8"
Annual Snowfall
21.5"
Extreme Heat Days
22.76666666666667
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
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 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.