Passaic County Climate
Passaic County, New Jersey
Avg Annual Temp
51.6°F
Annual Precip
50.3"
Annual Snowfall
—
Extreme Heat Days
15.266666666666666
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Seasonal Overview
National Comparison
Climate Profile
About Passaic County Weather
Cooler highland climate in the north
Passaic County records an annual average of 51.6°F, which is notably lower than the national median. This cooler profile is typical of the northern New Jersey Appalachian foothills.
One of the state’s coldest spots
Passaic sits two full degrees below the New Jersey state average of 53.6°F. It represents the colder end of the state's climate spectrum.
Low heat extremes compared to neighbors
Passaic only experiences 15 extreme heat days, fewer than the 16 in Morris and 31 in Hudson. It maintains a high precipitation level of 50.3 inches annually.
Cold winters with limited heat waves
January temperatures average 28.8°F, the lowest in this group. While specific snowfall data is unavailable, the cold winter baseline suggests frequent freezing conditions.
Prepare for cold and damp seasons
With the lowest number of extreme heat days, residents can focus less on cooling and more on winter readiness. Sub-30-degree January averages require robust home heating and cold-weather gear.
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.