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United States › New Jersey › Passaic County › Climate Station WANAQUE RAYMOND DAM, NJ US Distance 0.6 mi Normals 1991–2020

30-year climate normals

Passaic County Climate and Weather Averages

Hottest month — July

84.3°

average daily high. The coldest month is January, averaging a low of 19.9°F.

Passaic County gets 48.2" of precipitation a year, and 30% of it falls in Jun, Jul, Aug.

Temperature through the year

Each bar spans the average daily low to the average daily high for that month.

20° 40° 60° 80° JanFebMarAprMayJunJulAugSepOctNovDec
MonthAvg highAvg low Precip
January 37.7° 19.9° 3.39"
February 40.5° 20.0° 2.71"
March 47.8° 29.0° 3.86"
April 59.5° 39.0° 4.17"
May 71.0° 49.5° 3.58"
June 79.4° 58.3° 5.13"
July 84.3° 64.2° 4.65"
August 82.8° 62.9° 4.57"
September 76.0° 55.9° 3.95"
October 64.2° 43.0° 4.37"
November 52.6° 34.6° 3.77"
December 42.6° 26.9° 4.05"

Rainfall by month

Precipitation is spread fairly evenly through the year here, with 30% falling in the wettest three months (Jun, Jul, Aug).

January 3.39"
February 2.71"
March 3.86"
April 4.17"
May 3.58"
June 5.13"
July 4.65"
August 4.57"
September 3.95"
October 4.37"
November 3.77"
December 4.05"
Annual total 48.2"

What this climate costs you

Degree days measure how hard a building has to work to stay comfortable. They are the reason two identical houses have very different power bills, and they are the link between the weather here and what you pay every month.

Cooling degree days How much air conditioning the climate demands 837
Heating degree days How much heating the climate demands 5,635
Approximate annual cooling cost At 23.27¢/kWh, New Jersey average $195
Approximate annual electric heating cost Lower where heating is gas rather than electric $459

These are rough planning figures from degree days and the state electricity price, not a bill estimate. House size, insulation and fuel type move them a lot. See the full cost of owning a home in Passaic County, where electricity is one line of eight.

Common questions

What is the weather like in Passaic County?

Passaic County averages a high of 84.3°F in July and a low of 19.9°F in January. Annual precipitation is 48.2 inches, with essentially no snow.

When is the rainy season in Passaic County?

The wettest stretch is Jun, Jul, Aug, which accounts for 30% of the year's precipitation. Precipitation is relatively evenly distributed across the year.

How hot does it get in Passaic County?

The average daily high in July, the hottest month, is 84.3°F. That drives 837 cooling degree days a year, which is what your air conditioning has to work against.

Does it snow in Passaic County?

Effectively no. Measurable snowfall is rare in Passaic County.

Sources

  • Temperature, precipitation and snowfall normals — NOAA National Centers for Environmental Information, 1991–2020 Monthly Climate Normals, station WANAQUE RAYMOND DAM, NJ US (USC00289187), 0.6 miles from the county centroid.
  • Heating and cooling degree days — NOAA, same station and period.
  • Electricity price — US Energy Information Administration, Electric Power Monthly Table 5.6.A, New Jersey residential average.
  • Wet-season share is the wettest three consecutive months as a percentage of annual precipitation, calculated from the monthly normals.