TODAY MAR19
TEMPERATURE34
HUMIDITY54
PRESSURE100850
WIND COND.290 14.8
  • 4734Tue
  • 5429Wed20%
  • 4524Thu
  • 4635Fri40%
  • 5232Sat50%
daynightWeather update from Trenton, Mercer County Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Hopewell for July is 77 degrees
  • The lowest monthly average temperature in Hopewell for January is 32.7 degrees
  • The most monthly precipitation in Hopewell occurs in June with 5.3 inches
  • The air quality index in Hopewell is 3% better than the national average
  • The pollution index in Hopewell is 22% worse than the national average

Compare Hopewell, NJ Weather

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      Hopewell 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
      January25°F42°F33°F3.3"
      February25°F43°F34°F2.4"
      March33°F53°F42°F3.4"
      April43°F66°F54°F3.8"
      May52°F75°F63°F3.9"
      June62°F83°F72°F5.3"
      July67°F88°F77°F5.1"
      August65°F85°F75°F4.7"
      September59°F79°F68°F3.5"
      October48°F68°F57°F4.2"
      November37°F57°F46°F2.9"
      December31°F47°F38°F4.3"

      Hopewell 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.
      IndexHopewellNew JerseyNational
      Air quality index414542
      Pollution index3,313,9207,246,8912,726,193

      Hopewell 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

      Hopewell air quality information

      PollutantTotal
      Arsenic0.350%
      Benzene0.020%
      Carbon Tetrachloride0.004%
      Lead0.350%
      Mercury0.340%

      Average monthly Hopewell temperature with heat index

      Hopewell monthly precipitation with daily maximum

      Hopewell monthly snow depth with daily maximum

      Hopewell monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Blackwells Mills, NJ9,5094118.0%
      East Rocky Hill, NJ3354118.0%
      Heathcote, NJ7,3894118.0%
      Monmouth Junction, NJ8,9114118.0%
      Six Mile Run, NJ3,4324118.0%
      Hopewell, NJ1,8574118.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      San Augustine, TX1,8573922.0%
      Waterbury, VT1,8573726.0%
      Fairlea, WV1,8574118.0%
      Notre-Dame-des-Pins, QC1,857n/a 
      Fraser Valley D, BC1,857n/a 
      Hopewell, NJ1,8574118.0%
      Source: The Hopewell, 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.