TODAY APR19
TEMPERATURE61
HUMIDITY42
PRESSURE101760
WIND COND.330 20.5
  • 5534Sat
  • 5535Sun
  • 6243Mon
  • 6547Tue80%
  • 5936Wed60%
daynightWeather update from Wilmington, Airborne Airpark Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Port William for July is 73.5 degrees
  • The lowest monthly average temperature in Port William for January is 29.6 degrees
  • The most monthly precipitation in Port William occurs in June with 4.9 inches
  • The air quality index in Port William is 2% worse than the national average
  • The pollution index in Port William is 73% better than the national average

Compare Port William, OH Weather

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      Port William 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
      January22°F38°F30°F3.0"
      February22°F40°F31°F2.8"
      March33°F53°F42°F4.5"
      April43°F66°F54°F4.5"
      May52°F75°F63°F4.1"
      June61°F83°F72°F4.9"
      July63°F85°F73°F4.0"
      August61°F84°F72°F3.3"
      September55°F79°F66°F3.3"
      October44°F67°F55°F4.1"
      November33°F55°F43°F3.3"
      December27°F43°F34°F3.9"

      Port William 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.
      IndexPort WilliamOhioNational
      Air quality index434042
      Pollution index735,6564,472,3862,726,193

      Port William air quality information

      MeasurementTotal
      Days measured244
      Days with good air quality203
      Days with moderate air quality41
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Port William air quality information

      PollutantTotal
      Arsenic0.010%
      Benzene0.030%
      Carbon Tetrachloride0.000%
      Lead0.003%
      Mercury0.150%

      Average monthly Port William temperature with heat index

      Port William monthly precipitation with daily maximum

      Port William monthly snow depth with daily maximum

      Port William monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Octa, OH513824.0%
      Jeffersonville, OH1,0813824.0%
      Leesburg, OH1,4493824.0%
      Milledgeville, OH1163824.0%
      New Burlington, OH4,5264314.0%
      Port William, OH3154314.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Woodville, GA3154412.0%
      Frederika, IA3153922.0%
      Wingate, IN3154216.0%
      Wetmore, KS3154118.0%
      Fife Lake, MI3153628.0%
      Port William, OH3154314.0%
      Source: The Port William, OH 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.