TODAY MAR19
TEMPERATURE28
HUMIDITY65
PRESSURE101900
WIND COND.250 20.5
  • 5829Tue
  • 4124Wed
  • 4533Thu40%
  • 4827Fri70%30%
  • 4529Sat
daynightWeather update from Sterling Rockfalls at
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Weather Quick Facts

  • The highest monthly average temperature in Sheffield for August is 73.3 degrees
  • The lowest monthly average temperature in Sheffield for December is 23.1 degrees
  • The most monthly precipitation in Sheffield occurs in August with 9.2 inches
  • The air quality index in Sheffield is 3% better than the national average
  • The pollution index in Sheffield is 88% better than the national average

Compare Sheffield, IL Weather

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      Sheffield 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
      January18°F33°F25°F2.9"
      February17°F32°F24°F2.5"
      March31°F52°F39°F4.5"
      April39°F65°F50°F6.4"
      May50°F76°F62°F3.5"
      June61°F86°F73°F6.1"
      July61°F86°F73°F7.8"
      August64°F85°F73°F9.2"
      September55°F82°F67°F3.9"
      October45°F69°F56°F1.9"
      November30°F52°F40°F4.2"
      December17°F31°F23°F1.5"

      Sheffield 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.
      IndexSheffieldIllinoisNational
      Air quality index414142
      Pollution index339,1563,148,6942,726,193

      Sheffield air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality285
      Days with moderate air quality78
      Days w/ poor A.Q. for sensitive groups2
      Days with unhealthy air quality0

      Sheffield air quality information

      PollutantTotal
      Arsenic0.000%
      Benzene0.020%
      Carbon Tetrachloride0.000%
      Lead0.000%
      Mercury0.000%

      Average monthly Sheffield temperature with heat index

      Sheffield monthly precipitation with daily maximum

      Sheffield monthly snow depth with daily maximum

      Sheffield monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Princeton, IL7,5890100.0%
      Ohio, IL5090100.0%
      Wyanet, IL1,2270100.0%
      Tiskilwa, IL6930100.0%
      Kewanee, IL12,6224118.0%
      Sheffield, IL8284118.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Whitecone, AZ8281766.0%
      Coldwater, KS8281570.0%
      Ossineke, MI8282648.0%
      Bloomsdale, MO828548.0%
      Cloudcroft, NM8281080.0%
      Sheffield, IL8284118.0%
      Source: The Sheffield, IL 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.