TODAY NOV22
TEMPERATURE
HUMIDITY47
PRESSURE
WIND COND.
  • 5430Fri
  • 5127Sat
  • 3817Sun30%20%
  • 3720Mon
  • 4120Tue
daynightWeather update from Mondell Field at
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Weather Quick Facts

  • The highest monthly average temperature in Newcastle for July is 69.8 degrees
  • The lowest monthly average temperature in Newcastle for December is 23.4 degrees
  • The most monthly precipitation in Newcastle occurs in May with 6.6 inches
  • The air quality index in Newcastle is 5% worse than the national average
  • The pollution index in Newcastle is 28% better than the national average

Compare Newcastle, WY 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°F36°F24°F0.9"
      February15°F38°F26°F1.1"
      March25°F49°F36°F2.1"
      April28°F53°F39°F4.4"
      May36°F63°F50°F6.6"
      June47°F76°F61°F3.5"
      July54°F85°F70°F3.1"
      August52°F79°F65°F5.8"
      September43°F73°F58°F2.5"
      October34°F58°F45°F1.7"
      November24°F48°F35°F0.8"
      December14°F34°F23°F1.0"

      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.
      IndexNewcastleWyomingNational
      Air quality index443942
      Pollution index1,968,7901,779,9752,726,193

      Newcastle air quality

      MeasurementTotal
      Days measured365
      Days with good air quality274
      Days with moderate air quality87
      Days w/ poor A.Q. for sensitive groups4
      Days with unhealthy air quality0

      Air quality details

      PollutantTotal
      Arsenic0.003%
      Benzene0.030%
      Carbon Tetrachloride0.004%
      Lead0.020%
      Mercury0.010%

      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.
      Osage, WY474020.0%
      Hill View Heights, WY654412.0%
      Newcastle, WY3,3954412.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Kenedy, TX3,3943138.0%
      North Great River, NY3,3964314.0%
      Saint-Pascal, QC3,396n/a 
      Clayton, DE3,3934216.0%
      Frontenac, KS3,3983726.0%
      Newcastle, WY3,3954412.0%
      Source: The Newcastle, WY 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.