Passaic County Climate
Passaic County, New Jersey
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
51.6°F
Annual Precip
50.3"
Annual Snowfall
—
Extreme Heat Days
15
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
7a
Minimum winter temperature range for plant survival
3,096
Supports most vegetables & fruits
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Passaic County
Climate Verdict
Passaic County has a mild, with an average annual temperature of 51.6°F, moderately wet with 50.3 inches of annual precipitation, rare extreme heat with only 15.266666666666666 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 28.8°F. summers are warm — July averages 74.1°F. The 45°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Passaic County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Passaic 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 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 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.