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Key findings

  • The highest monthly average temperature in St. Charles for August is 84 degrees
  • The lowest monthly average temperature in St. Charles for January is 43.6 degrees
  • The most monthly precipitation in St. Charles occurs in October with 17.9 inches
  • The air quality index in St. Charles is 14% better than the national average
  • The pollution index in St. Charles is 83% better than the national average

Compare St. Charles, AR Weather

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      St. Charles 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
      January38°F53°F44°F9.4"
      February38°F56°F45°F3.6"
      March48°F70°F56°F5.2"
      April52°F74°F61°F6.9"
      May63°F84°F72°F4.2"
      June71°F91°F80°F3.0"
      July72°F90°F79°F7.8"
      August74°F96°F84°F6.3"
      September67°F88°F76°F11.9"
      October55°F76°F64°F17.9"
      November46°F68°F55°F5.5"
      December36°F56°F44°F9.2"

      St. Charles 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.
      IndexSt. CharlesArkansasNational
      Air quality index433850
      Pollution index855,9101,270,1085,066,862

      St. Charles air quality information

      MeasurementTotal
      Days measured364
      Days with good air quality270
      Days with moderate air quality94
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      St. Charles air quality information

      PollutantTotal
      Arsenic0.001%
      Benzene0.010%
      Carbon Tetrachloride0.000%
      Lead0.020%
      Mercury0.140%

      Average monthly St. Charles temperature with heat index

      St. Charles monthly precipitation with daily maximum

      St. Charles monthly snow depth with daily maximum

      St. Charles monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      DeWitt, AR3,1974314%
      Marvell, AR1,1814314%
      St. Charles, AR3244314%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Tall Timbers, MD3244118%
      North Washington, CO3245816%
      Brownsboro Village, KY324492%
      Dupont, OH3243922%
      Las Flores CDP (Tehama County), CA3248978%
      St. Charles, AR3244314%
      Source: The St. Charles, AR 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.