TODAY MAR19
TEMPERATURE
HUMIDITY47
PRESSURE100370
WIND COND.220 25.9
  • 4920Tue
  • 3319Wed
  • 3626Thu50%
  • 3518Fri
  • 3320Sat
daynightWeather update from Appleton-Outagamie at
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Weather Quick Facts

  • The highest monthly average temperature in Winchester for July is 71.2 degrees
  • The lowest monthly average temperature in Winchester for January is 18.8 degrees
  • The most monthly precipitation in Winchester occurs in June with 1.7 inches
  • The air quality index in Winchester is 12% better than the national average
  • The pollution index in Winchester is 55% worse than the national average

Compare Winchester, WI Weather

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      Winchester 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°F26°F19°F0.1"
      February13°F28°F20°F0.0"
      March26°F41°F33°F0.4"
      April37°F55°F45°F0.9"
      May48°F68°F57°F1.0"
      June58°F76°F67°F1.7"
      July62°F81°F71°F0.4"
      August61°F78°F69°F0.2"
      September53°F71°F61°F1.0"
      October42°F58°F49°F0.7"
      November30°F44°F37°F0.2"
      December18°F30°F24°F0.2"

      Winchester 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.
      IndexWinchesterWisconsinNational
      Air quality index376942
      Pollution index4,238,8402,842,4182,726,193

      Winchester air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality304
      Days with moderate air quality59
      Days w/ poor A.Q. for sensitive groups2
      Days with unhealthy air quality0

      Winchester air quality information

      PollutantTotal
      Arsenic0.000%
      Benzene0.050%
      Carbon Tetrachloride0.002%
      Lead0.010%
      Mercury0.000%

      Average monthly Winchester temperature with heat index

      Winchester monthly precipitation with daily maximum

      Winchester monthly snow depth with daily maximum

      Winchester monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Omro, WI3,5843628.0%
      Oshkosh, WI66,7533628.0%
      Eureka, WI4103628.0%
      Waukau, WI2353628.0%
      Butte des Morts, WI9813726.0%
      Winchester, WI5723726.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Norfork, AR5723628.0%
      Sautee-Nacoochee, GA5723726.0%
      Anthon, IA5723530.0%
      Richland, IA5723530.0%
      Atlanta, MO5724118.0%
      Winchester, WI5723726.0%
      Source: The Winchester, WI 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.