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Key findings

  • The highest monthly average temperature in Henderson for July is 78 degrees
  • The lowest monthly average temperature in Henderson for January is 22 degrees
  • The most monthly precipitation in Henderson occurs in May with 14.1 inches
  • The air quality index in Henderson is 20% better than the national average
  • The pollution index in Henderson is 14% better than the national average

Compare Henderson, IA Weather

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      Henderson 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
      January15°F33°F22°F2.3"
      February20°F39°F28°F3.1"
      March34°F58°F44°F4.4"
      April42°F65°F52°F10.1"
      May55°F77°F65°F14.1"
      June64°F85°F73°F6.4"
      July67°F90°F78°F4.8"
      August67°F87°F76°F9.9"
      September58°F82°F68°F6.9"
      October46°F69°F56°F8.1"
      November31°F54°F40°F1.8"
      December16°F34°F24°F2.8"

      Henderson 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.
      IndexHendersonIowaNational
      Air quality index403950
      Pollution index4,349,9301,643,8365,066,862

      Henderson air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality283
      Days with moderate air quality82
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Henderson air quality information

      PollutantTotal
      Arsenic0.210%
      Benzene0.040%
      Carbon Tetrachloride0.004%
      Lead0.100%
      Mercury0.160%

      Average monthly Henderson temperature with heat index

      Henderson monthly precipitation with daily maximum

      Henderson monthly snow depth with daily maximum

      Henderson monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Carson, IA8384020%
      McClelland, IA1764020%
      Oakland, IA1,5444020%
      Elliott, IA4724020%
      Macedonia, IA2234020%
      Henderson, IA1474020%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Pamplin City, VA1472648%
      Mitchellville, TN1474314%
      Kingdom City, MO1473824%
      Dawn, MO147476%
      Taunton, MN1473236%
      Henderson, IA1474020%
      Source: The Henderson, 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.