TODAY NOV22
TEMPERATURE37
HUMIDITY
PRESSURE
WIND COND.230 18.4
  • 3934Fri70%70%
  • 4939Sat
  • 5133Sun
  • 5341Mon
  • 5433Tue30%
daynightWeather update from Morristown Municipal at
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Weather Quick Facts

  • The highest monthly average temperature in Summit for July is 78.1 degrees
  • The lowest monthly average temperature in Summit for February is 32.4 degrees
  • The most monthly precipitation in Summit occurs in May with 9.9 inches
  • The air quality index in Summit is 21% worse than the national average
  • The pollution index in Summit is 371% worse than the national average

Compare Summit, NJ Weather

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      Summit Average Temperature

      In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
      MonthTemp. (min)Temp. (max)Temp. (avg)Precipitation
      January26°F42°F34°F6.3"
      February24°F42°F32°F4.9"
      March31°F50°F40°F7.3"
      April46°F67°F55°F5.0"
      May56°F76°F65°F9.9"
      June64°F83°F73°F8.3"
      July71°F87°F78°F8.3"
      August67°F84°F75°F7.8"
      September61°F80°F70°F4.9"
      October54°F72°F62°F6.3"
      November38°F56°F46°F5.9"
      December33°F46°F39°F5.8"

      Summit air quality index & pollution index

      In the event that the air quality/pollution data was unavailable for this city, estimates based upon nearby cities were used.
      IndexSummitNew JerseyNational
      Air quality index514542
      Pollution index12,837,2007,246,8912,726,193

      Summit air quality

      MeasurementTotal
      Days measured365
      Days with good air quality169
      Days with moderate air quality180
      Days w/ poor A.Q. for sensitive groups16
      Days with unhealthy air quality0

      Air quality details

      PollutantTotal
      Arsenic0.010%
      Benzene0.110%
      Carbon Tetrachloride0.050%
      Lead0.020%
      Mercury0.230%

      Average monthly Summit temperature with heat index

      Summit monthly precipitation with daily maximum

      Summit monthly snow depth with daily maximum

      Summit monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Kenvil, NJ1,9343432.0%
      White Meadow Lake, NJ9,1663432.0%
      Mount Arlington, NJ5,7513432.0%
      Mendham, NJ4,8803432.0%
      Victory Gardens, NJ1,6043432.0%
      Summit, NJ21,913512.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Bloomington, CA21,9078978.0%
      Bloomingdale, IL21,9055510.0%
      Leland, NC21,9033432.0%
      Pace, FL21,8984118.0%
      Gardner, KS21,936476.0%
      Summit, NJ21,913512.0%
      Source: The Summit, NJ weather data displayed above is derived from the NOAA (National Oceanic and Atmospheric). Air quality and pollution data is derived from the EPA (United States Environmental Protection Agency). Air quality and pollution levels measured in a particular area may not be representative of the entire county.