TODAY DEC28
TEMPERATURE35
HUMIDITY96
PRESSURE102540
WIND COND.
  • 5747Sun80%100%
  • 5532Mon100%20%
  • 5037Tue90%
  • 442970%40%
  • 3824Thu
daynightWeather update from Andover, Aeroflex-Andover Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Delaware for July is 72.9 degrees
  • The lowest monthly average temperature in Delaware for January is 28.4 degrees
  • The most monthly precipitation in Delaware occurs in July with 6.2 inches
  • The air quality index in Delaware is 19% better than the national average
  • The pollution index in Delaware is 2% worse than the national average

Compare Delaware, NJ Weather

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      Delaware 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
      January20°F38°F28°F5.1"
      February20°F40°F29°F3.4"
      March29°F50°F38°F3.8"
      April39°F64°F51°F4.0"
      May49°F73°F61°F4.1"
      June58°F80°F68°F5.3"
      July63°F85°F73°F6.2"
      August60°F82°F70°F5.8"
      September54°F76°F64°F4.5"
      October43°F65°F53°F4.8"
      November33°F53°F43°F2.9"
      December27°F43°F34°F4.8"

      Delaware 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.
      IndexDelawareNew JerseyNational
      Air quality index344542
      Pollution index2,789,2907,246,8912,726,193

      Delaware 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%
      Lead0.020%
      Mercury0.030%

      Average monthly Delaware temperature with heat index

      Delaware monthly precipitation with daily maximum

      Delaware monthly snow depth with daily maximum

      Delaware monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Glen Gardner, NJ1,5543432.0%
      New Village, NJ5393432.0%
      Allamuchy, NJ1143432.0%
      Port Murray, NJ2163432.0%
      Portland, PA5493432.0%
      Delaware, NJ1303432.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Pitkas Point, AK1303138.0%
      McKittrick, CA1306734.0%
      Parrott, GA1303922.0%
      Atlanta, KS1304020.0%
      Beverly, KS1303236.0%
      Delaware, NJ1303432.0%
      Source: The Delaware, 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.