TODAY MAY06
TEMPERATURE48
HUMIDITY93
PRESSURE30.07
WIND COND.
  • 6237Fri
  • 6043Sat50%
  • 5638Sun60%40%
  • 5938Mon
  • 6342Tue
daynightWeather update from Clinton, Clinton Municipal Airport at

Key findings

  • The highest monthly average temperature in DeWitt for July is 73.3 degrees
  • The lowest monthly average temperature in DeWitt for January is 21.4 degrees
  • The most monthly precipitation in DeWitt occurs in August with 9.8 inches
  • The air quality index in DeWitt is 16% better than the national average
  • The pollution index in DeWitt is 69% better than the national average

Compare DeWitt, IA Weather

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      DeWitt 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°F31°F21°F2.9"
      February15°F33°F23°F2.6"
      March29°F49°F38°F4.2"
      April39°F62°F50°F6.5"
      May51°F74°F61°F6.2"
      June61°F82°F71°F7.9"
      July64°F84°F73°F6.6"
      August61°F82°F71°F9.8"
      September53°F76°F64°F6.2"
      October42°F64°F52°F6.1"
      November30°F50°F39°F4.3"
      December19°F34°F26°F4.0"

      DeWitt 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.
      IndexDeWittIowaNational
      Air quality index423950
      Pollution index1,592,9101,643,8365,066,862

      DeWitt air quality information

      MeasurementTotal
      Days measured364
      Days with good air quality268
      Days with moderate air quality96
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      DeWitt air quality information

      PollutantTotal
      Arsenic0.090%
      Benzene0.030%
      Carbon Tetrachloride0.000%
      Lead0.010%
      Mercury0.010%

      Average monthly DeWitt temperature with heat index

      DeWitt monthly precipitation with daily maximum

      DeWitt monthly snow depth with daily maximum

      DeWitt monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Goose Lake, IA2754216%
      Cordova, IL6454216%
      Delmar, IA4974216%
      Low Moor, IA2494216%
      Andover, IA1134216%
      DeWitt, IA5,2644216%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Lucerne Valley, CA5,2638978%
      Shillington, PA5,2654216%
      Williamsburg, KY5,2633922%
      Gray, LA5,2624118%
      Bliss Corner, MA5,2664412%
      DeWitt, IA5,2644216%
      Source: The DeWitt, 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.