TODAY MAR19
TEMPERATURE27
HUMIDITY66
PRESSURE102130
WIND COND.250 14.8
  • 5933Tue
  • 4626Wed
  • 4534Thu
  • 5331Fri30%30%
  • 4932Sat
daynightWeather update from University of Illinois - Willard at
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Weather Quick Facts

  • The highest monthly average temperature in Garrett for August is 75.2 degrees
  • The lowest monthly average temperature in Garrett for February is 25.9 degrees
  • The most monthly precipitation in Garrett occurs in November with 7.3 inches
  • The air quality index in Garrett is equal to the national average
  • The pollution index in Garrett is 74% better than the national average

Compare Garrett, IL Weather

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      Garrett 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
      January22°F36°F29°F6.9"
      February19°F34°F26°F3.4"
      March33°F54°F42°F3.3"
      April41°F65°F52°F5.8"
      May52°F78°F65°F3.4"
      June63°F85°F74°F6.1"
      July63°F83°F73°F5.8"
      August65°F86°F75°F5.4"
      September57°F83°F69°F7.0"
      October46°F69°F57°F5.6"
      November33°F53°F42°F7.3"
      December21°F35°F27°F3.7"

      Garrett 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.
      IndexGarrettIllinoisNational
      Air quality index424142
      Pollution index703,2183,148,6942,726,193

      Garrett air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality281
      Days with moderate air quality84
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Garrett air quality information

      PollutantTotal
      Arsenic0.001%
      Benzene0.020%
      Carbon Tetrachloride0.000%
      Lead0.000%
      Mercury0.000%

      Average monthly Garrett temperature with heat index

      Garrett monthly precipitation with daily maximum

      Garrett monthly snow depth with daily maximum

      Garrett monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Tolono, IL3,0714216.0%
      Sadorus, IL3574216.0%
      Arcola, IL2,8404216.0%
      Tuscola, IL4,5994216.0%
      Pesotum, IL4474216.0%
      Garrett, IL1184216.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Chalkyitsik, AK1183824.0%
      Delta, AL1183824.0%
      Reed, AR1184314.0%
      Katherine, AZ1181374.0%
      Montgomery Creek, CA1184216.0%
      Garrett, IL1184216.0%
      Source: The Garrett, 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.