TODAY NOV25
TEMPERATURE36
HUMIDITY85
PRESSURE101690
WIND COND.
  • 5142
  • 5732Tue70%
  • 4836Wed
  • 463280%70%
  • 4526Fri30%
daynightWeather update from Somerville, Somerset Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Long Valley for July is 75 degrees
  • The lowest monthly average temperature in Long Valley for January is 30.6 degrees
  • The most monthly precipitation in Long Valley occurs in August with 5.5 inches
  • The air quality index in Long Valley is 19% better than the national average
  • The pollution index in Long Valley is 16% worse than the national average

Compare Long Valley, NJ Weather

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      Long Valley 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"

      Long Valley 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.
      IndexLong ValleyNew JerseyNational
      Air quality index344542
      Pollution index3,167,1107,246,8912,726,193

      Long Valley air quality

      MeasurementTotal
      Days measured349
      Days with good air quality340
      Days with moderate air quality9
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Air quality details

      PollutantTotal
      Arsenic0.002%
      Benzene0.040%
      Carbon Tetrachloride0.010%
      Lead0.030%
      Mercury0.001%

      Average monthly Long Valley temperature with heat index

      Long Valley monthly precipitation with daily maximum

      Long Valley monthly snow depth with daily maximum

      Long Valley monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Annandale, NJ1,7943432.0%
      Hampton, NJ1,1823432.0%
      Washington, NJ6,4753432.0%
      Byram Center, NJ2,0173432.0%
      Hopatcong, NJ14,2283432.0%
      Long Valley, NJ2,3273432.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Rio Verde, AZ2,3277448.0%
      Sylvania, GA2,327476.0%
      Central Okanagan J, BC2,327n/a 
      Stevenson, AL2,3263922.0%
      Rangely, CO2,326492.0%
      Long Valley, NJ2,3273432.0%
      Source: The Long Valley, 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.