TODAY MAY17
TEMPERATURE61
HUMIDITY94
PRESSURE30.04
WIND COND.110 22.3
  • 6957Mon30%40%
  • 7258Tue40%50%
  • 7560Wed60%70%
  • 7862Thu60%70%
  • 8063Fri30%40%
daynightWeather update from Denison at

Key findings

  • The highest monthly average temperature in Charter Oak for July is 76.1 degrees
  • The lowest monthly average temperature in Charter Oak for January is 22.3 degrees
  • The most monthly precipitation in Charter Oak occurs in June with 5.1 inches
  • The air quality index in Charter Oak is 30% better than the national average
  • The pollution index in Charter Oak is 89% better than the national average

Compare Charter Oak, IA Weather

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      Charter Oak 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°F33°F22°F0.4"
      February15°F37°F25°F0.7"
      March29°F54°F40°F1.4"
      April39°F66°F51°F3.5"
      May51°F77°F63°F4.0"
      June62°F86°F73°F5.1"
      July65°F89°F76°F3.0"
      August62°F85°F73°F4.9"
      September53°F79°F65°F3.9"
      October41°F67°F52°F2.4"
      November28°F52°F39°F0.9"
      December16°F36°F25°F1.2"

      Charter Oak 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.
      IndexCharter OakIowaNational
      Air quality index353950
      Pollution index565,4511,643,8365,066,862

      Charter Oak air quality information

      MeasurementTotal
      Days measured364
      Days with good air quality322
      Days with moderate air quality42
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Charter Oak air quality information

      PollutantTotal
      Arsenic0.000%
      Benzene0.010%
      Carbon Tetrachloride0.001%
      Lead0.000%
      Mercury0.000%

      Average monthly Charter Oak temperature with heat index

      Charter Oak monthly precipitation with daily maximum

      Charter Oak monthly snow depth with daily maximum

      Charter Oak monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Deloit, IA3723530%
      Denison, IA8,3263530%
      Schleswig, IA8063530%
      Ricketts, IA1243530%
      Kiron, IA2623530%
      Charter Oak, IA5963530%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Five Points, NC5964118%
      Martin, KY5964216%
      Mosier, OR5962354%
      Myrtle Springs, TX5963628%
      Heart Butte, MT5963726%
      Charter Oak, IA5963530%
      Source: The Charter Oak, IA 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.