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Key findings

  • The highest monthly average temperature in Griggsville for July is 76 degrees
  • The lowest monthly average temperature in Griggsville for January is 29 degrees
  • The most monthly precipitation in Griggsville occurs in June with 10.4 inches
  • The air quality index in Griggsville is 18% better than the national average
  • The pollution index in Griggsville is 96% better than the national average

Compare Griggsville, IL Weather

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      Griggsville 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
      January21°F39°F29°F3.5"
      February23°F41°F31°F3.2"
      March36°F56°F44°F3.6"
      April46°F68°F56°F7.4"
      May56°F76°F65°F7.6"
      June64°F84°F74°F10.4"
      July67°F87°F76°F8.6"
      August65°F87°F75°F6.1"
      September58°F81°F68°F8.5"
      October46°F68°F56°F5.6"
      November36°F55°F45°F5.5"
      December27°F42°F33°F6.1"

      Griggsville 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.
      IndexGriggsvilleIllinoisNational
      Air quality index414150
      Pollution index222,6333,347,2955,066,862

      Griggsville air quality information

      MeasurementTotal
      Days measured241
      Days with good air quality208
      Days with moderate air quality33
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Griggsville air quality information

      PollutantTotal
      Arsenic0.003%
      Benzene0.010%
      Carbon Tetrachloride0.000%
      Lead0.002%
      Mercury0.000%

      Average monthly Griggsville temperature with heat index

      Griggsville monthly precipitation with daily maximum

      Griggsville monthly snow depth with daily maximum

      Griggsville monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Winchester, IL1,6364020%
      Glasgow, IL1744020%
      Exeter, IL1054020%
      Bluffs, IL7344118%
      Florence, IL554118%
      Griggsville, IL1,3254118%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Castleton-on-Hudson, NY1,3253726%
      Elkader, IA1,3252942%
      Alton, IA1,3253530%
      Vardaman, MS1,3253922%
      Doña Ana, NM1,325512%
      Griggsville, IL1,3254118%
      Source: The Griggsville, 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.