TODAY MAR28
TEMPERATURE49
HUMIDITY93
PRESSURE101460
WIND COND.350 5.4
  • 5534Fri
  • 5740Sat20%
  • 6240Sun
  • 5542Mon40%50%
  • 5541Tue80%70%
daynightWeather update from Somerville, Somerset Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Somerville for July is 75 degrees
  • The lowest monthly average temperature in Somerville for January is 30.6 degrees
  • The most monthly precipitation in Somerville occurs in August with 5.5 inches
  • The air quality index in Somerville is 3% better than the national average
  • The pollution index in Somerville is 106% worse than the national average

Compare Somerville, NJ Weather

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      Somerville 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
      January21°F41°F31°F2.8"
      February22°F43°F31°F2.3"
      March30°F53°F41°F3.7"
      April39°F66°F52°F4.0"
      May49°F75°F62°F3.7"
      June58°F83°F70°F5.3"
      July63°F87°F75°F5.3"
      August61°F85°F72°F5.5"
      September55°F79°F66°F3.6"
      October43°F68°F55°F4.5"
      November33°F56°F44°F3.0"
      December27°F46°F36°F4.6"

      Somerville 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.
      IndexSomervilleNew JerseyNational
      Air quality index414542
      Pollution index5,618,7107,246,8912,726,193

      Somerville air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality280
      Days with moderate air quality83
      Days w/ poor A.Q. for sensitive groups2
      Days with unhealthy air quality0

      Somerville air quality information

      PollutantTotal
      Arsenic0.004%
      Benzene0.060%
      Carbon Tetrachloride0.020%
      Lead0.040%
      Mercury0.003%

      Average monthly Somerville temperature with heat index

      Somerville monthly precipitation with daily maximum

      Somerville monthly snow depth with daily maximum

      Somerville monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Long Valley, NJ2,3273432.0%
      Annandale, NJ1,7943432.0%
      Califon, NJ1,1843432.0%
      High Bridge, NJ3,4603432.0%
      Mendham, NJ4,8803432.0%
      Somerville, NJ12,1394118.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Fortuna, CA12,1352746.0%
      Baraboo, WI12,1333530.0%
      Sylacauga, AL12,1323824.0%
      Cascades, VA12,132476.0%
      Lake Tapps, WA12,1294510.0%
      Somerville, NJ12,1394118.0%
      Source: The Somerville, 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.