TODAY MAR28
TEMPERATURE28
HUMIDITY83
PRESSURE101830
WIND COND.230 9.4
  • 4625Thu
  • 5235Fri70%
  • 5532Sat50%
  • 4735Sun60%
  • 4835Mon60%80%
daynightWeather update from Watertown at
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Weather Quick Facts

  • The highest monthly average temperature in Sullivan for July is 71.6 degrees
  • The lowest monthly average temperature in Sullivan for January is 20.6 degrees
  • The most monthly precipitation in Sullivan occurs in June with 7.3 inches
  • The air quality index in Sullivan is 12% better than the national average
  • The pollution index in Sullivan is 3% worse than the national average

Compare Sullivan, WI Weather

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      Sullivan 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°F28°F21°F3.6"
      February14°F30°F22°F1.7"
      March26°F45°F35°F3.4"
      April37°F59°F47°F6.3"
      May47°F71°F59°F5.1"
      June57°F79°F68°F7.3"
      July61°F83°F72°F3.8"
      August59°F81°F70°F5.7"
      September51°F74°F62°F4.6"
      October41°F61°F50°F6.5"
      November30°F47°F38°F4.2"
      December18°F33°F25°F3.3"

      Sullivan 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.
      IndexSullivanWisconsinNational
      Air quality index376942
      Pollution index2,796,3102,842,4182,726,193

      Sullivan air quality information

      MeasurementTotal
      Days measured203
      Days with good air quality191
      Days with moderate air quality12
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Sullivan air quality information

      PollutantTotal
      Arsenic0.003%
      Benzene0.040%
      Carbon Tetrachloride0.005%
      Lead0.001%
      Mercury0.004%

      Average monthly Sullivan temperature with heat index

      Sullivan monthly precipitation with daily maximum

      Sullivan monthly snow depth with daily maximum

      Sullivan monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Nashotah, WI1,2873726.0%
      Ashippun, WI1,0273726.0%
      Okauchee Lake, WI4,3733726.0%
      Oconomowoc Lake, WI6213726.0%
      Jefferson, WI8,0113726.0%
      Sullivan, WI7103726.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Kirby, AR7103236.0%
      Ty Ty, GA7104020.0%
      Stewardson, IL7104020.0%
      Bardwell, KY7104412.0%
      Washington Grove, MD710476.0%
      Sullivan, WI7103726.0%
      Source: The Sullivan, 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.