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Key findings

  • The highest monthly average temperature in Wilton for July is 70.5 degrees
  • The lowest monthly average temperature in Wilton for January is 18.2 degrees
  • The most monthly precipitation in Wilton occurs in July with 6.2 inches
  • The air quality index in Wilton is 30% better than the national average
  • The pollution index in Wilton is 59% better than the national average

Compare Wilton, WI Weather

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      Wilton 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
      January8°F28°F18°F1.0"
      February9°F30°F20°F0.6"
      March24°F46°F34°F1.5"
      April34°F59°F46°F3.7"
      May44°F71°F57°F4.5"
      June54°F80°F67°F5.6"
      July57°F84°F71°F6.2"
      August56°F81°F68°F4.8"
      September48°F74°F60°F5.4"
      October37°F61°F48°F3.4"
      November27°F46°F36°F1.5"
      December14°F32°F23°F2.3"

      Wilton 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.
      IndexWiltonWisconsinNational
      Air quality index356950
      Pollution index2,073,1703,316,8775,066,862

      Wilton air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality310
      Days with moderate air quality55
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Wilton air quality information

      PollutantTotal
      Arsenic0.030%
      Benzene0.020%
      Carbon Tetrachloride0.001%
      Lead0.010%
      Mercury0.040%

      Average monthly Wilton temperature with heat index

      Wilton monthly precipitation with daily maximum

      Wilton monthly snow depth with daily maximum

      Wilton monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Hillsboro, WI1,3583530%
      Ontario, WI4753530%
      Elroy, WI1,4823530%
      Tomah, WI9,3803530%
      Union Center, WI1653530%
      Wilton, WI4623530%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Willshire, OH4624510%
      Donnelsville, OH4624510%
      Colesburg, IA4622942%
      Fairfield, ID4622060%
      Lashmeet, WV462295490%
      Wilton, WI4623530%
      Source: The Wilton, 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.