TODAY JUN02
TEMPERATURE69
HUMIDITY75
PRESSURE29.95
WIND COND.240 11.4
  • 8561Wed50%20%
  • 8666Thu20%
  • 8459Fri20%
  • 7956Sat
  • 8161Sun
daynightWeather update from De Kalb Taylor Municipal Airport at
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Sycamore 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
January16°F31°F23°F2.8"
February17°F32°F24°F2.8"
March30°F47°F37°F4.6"
April39°F61°F49°F5.8"
May50°F72°F60°F5.3"
June59°F80°F69°F5.6"
July63°F82°F72°F5.8"
August61°F81°F70°F5.9"
September54°F75°F63°F3.7"
October43°F63°F52°F5.8"
November32°F49°F39°F4.0"
December21°F34°F27°F3.1"

Did you know?

  • The highest monthly average temperature in Sycamore for July is 72 degrees.
  • The lowest monthly average temperature in Sycamore for January is 23 degrees.
  • The most monthly precipitation in Sycamore occurs in August with 5.9 inches.
  • The air quality index in Sycamore is 38% better than the national average.
  • The pollution index in Sycamore is 63% better than the national average.

Compare Sycamore, IL Weather To Other Cities

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      Sycamore 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.
      IndexSycamoreIllinoisNational
      Air quality index314150
      Pollution index1,874,4903,347,2955,066,862

      Sycamore air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality339
      Days with moderate air quality26
      Days w/ poor A.Q. for sensitive groups
      Days with unhealthy air quality

      Sycamore air quality information

      PollutantTotal
      Arsenic0.002%
      Benzene0.030%
      Carbon Tetrachloride0.010%
      Lead0.010%
      Mercury0.010%

      Average monthly Sycamore temperature with heat index

      Sycamore monthly precipitation with daily maximum

      Sycamore monthly snow depth with daily maximum

      Sycamore monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Lee, IL358198%
      Kaneville, IL421198%
      Prestbury, IL1,780198%
      Genoa, IL4,9303138%
      Kingston, IL1,1703138%
      Sycamore, IL17,6113138%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      North Aurora, IL17,6126020%
      Martinsburg, WV17,6134118%
      Glassmanor, MD17,608492%
      Cinco Ranch, TX17,605524%
      Kirksville, MO17,5923432%
      Sycamore, IL17,6113138%
      Source: The Sycamore, 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.