TODAY DEC22
TEMPERATURE21
HUMIDITY59
PRESSURE103150
WIND COND.280 7.6
  • 3732Mon100%
  • 4031Tue90%30%
  • 4032
  • 4431Thu
  • 4735Fri
daynightWeather update from New Castle Municipal Airport at
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Weather Quick Facts

  • The highest monthly average temperature in New Castle for July is 72.2 degrees
  • The lowest monthly average temperature in New Castle for January is 26.1 degrees
  • The most monthly precipitation in New Castle occurs in July with 6.5 inches
  • The air quality index in New Castle is 26% better than the national average
  • The pollution index in New Castle is 78% better than the national average

Compare New Castle, PA Weather

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      New Castle 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°F34°F26°F2.8"
      February20°F36°F27°F2.4"
      March31°F52°F40°F4.8"
      April40°F63°F50°F3.3"
      May49°F74°F60°F4.6"
      June57°F81°F68°F5.5"
      July61°F85°F72°F6.5"
      August59°F83°F70°F4.0"
      September53°F76°F63°F3.8"
      October43°F63°F52°F3.5"
      November33°F53°F42°F3.6"
      December25°F40°F31°F3.3"

      New Castle 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.
      IndexNew CastlePennsylvaniaNational
      Air quality index314542
      Pollution index601,9864,584,8052,726,193

      New Castle air quality

      MeasurementTotal
      Days measured361
      Days with good air quality356
      Days with moderate air quality5
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Air quality details

      PollutantTotal
      Arsenic0.001%
      Benzene0.010%
      Carbon Tetrachloride0.001%
      Lead0.010%
      Mercury0.001%

      Average monthly New Castle temperature with heat index

      New Castle monthly precipitation with daily maximum

      New Castle monthly snow depth with daily maximum

      New Castle monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      New Waterford, OH881688.0%
      Rogers, OH186688.0%
      East Palestine, OH4,457688.0%
      Negley, OH352688.0%
      Chewton, PA3733138.0%
      New Castle, PA21,8053138.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Brent, FL21,8164118.0%
      Clarksville, IN21,825492.0%
      Camp Springs, MD21,829476.0%
      Hazel Dell, WA21,8303824.0%
      Kings, Subd. A, NS21,831n/a 
      New Castle, PA21,8053138.0%
      Source: The New Castle, PA 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.