TODAY DEC27
TEMPERATURE37
HUMIDITY93
PRESSURE102170
WIND COND.
  • 524880%
  • 6251Sat20%40%
  • 6139Sun100%90%
  • 5240Mon40%
  • 5435Tue90%90%
daynightWeather update from Chillicothe Ross County Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Williamsport for July is 72.5 degrees
  • The lowest monthly average temperature in Williamsport for January is 28.6 degrees
  • The most monthly precipitation in Williamsport occurs in July with 8.1 inches
  • The air quality index in Williamsport is 10% better than the national average
  • The pollution index in Williamsport is 15% better than the national average

Compare Williamsport, OH Weather

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      Williamsport 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°F36°F29°F2.2"
      February22°F38°F29°F2.6"
      March33°F51°F41°F4.9"
      April43°F64°F53°F4.3"
      May53°F74°F63°F5.0"
      June61°F81°F71°F4.4"
      July64°F82°F73°F8.1"
      August62°F82°F72°F7.0"
      September55°F76°F65°F5.2"
      October44°F65°F54°F5.1"
      November34°F53°F43°F4.0"
      December27°F41°F34°F2.7"

      Williamsport 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.
      IndexWilliamsportOhioNational
      Air quality index384042
      Pollution index2,306,0004,472,3862,726,193

      Williamsport air quality

      MeasurementTotal
      Days measured355
      Days with good air quality332
      Days with moderate air quality23
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Air quality details

      PollutantTotal
      Arsenic0.710%
      Benzene0.020%
      Carbon Tetrachloride0.003%
      Lead0.020%
      Mercury0.070%

      Average monthly Williamsport temperature with heat index

      Williamsport monthly precipitation with daily maximum

      Williamsport monthly snow depth with daily maximum

      Williamsport monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Darbyville, OH2063824.0%
      Clarksburg, OH5933824.0%
      Kingston, OH9413824.0%
      Andersonville, OH5843824.0%
      Bloomingburg, OH9663824.0%
      Williamsport, OH9623824.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Sully, IA9623922.0%
      Anacoco, LA9623040.0%
      Cotton Valley, LA9623922.0%
      Alanson, MI9623628.0%
      Clarkfield, MN9623236.0%
      Williamsport, OH9623824.0%
      Source: The Williamsport, 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.