TODAY MAY20
TEMPERATURE61
HUMIDITY75
PRESSURE101800
WIND COND.180 20.5
  • 7054Tue
  • 8058Wed
  • 7753Thu30%
  • 7348Fri
  • 7147Sat
daynightWeather update from Wiscasset Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Newcastle for July is 69 degrees
  • The lowest monthly average temperature in Newcastle for January is 23.8 degrees
  • The most monthly precipitation in Newcastle occurs in October with 6 inches
  • The air quality index in Newcastle is 14% better than the national average
  • The pollution index in Newcastle is 11% better than the national average

Compare Newcastle, ME Weather

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      Newcastle 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
      January13°F34°F24°F3.3"
      February14°F35°F25°F3.2"
      March23°F43°F33°F3.7"
      April34°F56°F44°F3.3"
      May44°F66°F54°F3.7"
      June53°F73°F62°F5.6"
      July59°F80°F69°F4.1"
      August57°F79°F67°F3.6"
      September50°F72°F61°F3.9"
      October40°F61°F50°F6.0"
      November30°F50°F39°F4.5"
      December20°F38°F29°F4.9"

      Newcastle 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.
      IndexNewcastleMaineNational
      Air quality index363342
      Pollution index2,415,3903,417,5212,726,193

      Newcastle air quality information

      MeasurementTotal
      Days measured213
      Days with good air quality204
      Days with moderate air quality9
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Newcastle air quality information

      PollutantTotal
      Arsenic0.004%
      Benzene0.020%
      Carbon Tetrachloride0.003%
      Lead0.010%
      Mercury0.002%

      Average monthly Newcastle temperature with heat index

      Newcastle monthly precipitation with daily maximum

      Newcastle monthly snow depth with daily maximum

      Newcastle monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Randolph, ME1,7112844.0%
      Richmond, ME1,7402844.0%
      Farmingdale, ME2,4512844.0%
      Gardiner, ME5,6702844.0%
      Wiscasset, ME1,2932844.0%
      Newcastle, ME6433628.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Santa Rosa, AZ643476.0%
      Acacia Villas, FL6434118.0%
      Tower Hill, IL6434020.0%
      Park City, KY6434314.0%
      Biwabik, MN6433530.0%
      Newcastle, ME6433628.0%
      Source: The Newcastle, ME 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.