TODAY AUG18
TEMPERATURE77
HUMIDITY79
PRESSURE29.98
WIND COND.40 11.4
  • 8563Sat
  • 8566Sun
  • 7863Mon70%60%
  • 7756Tue30%20%
  • 7757Wed
daynightWeather update from Clinton, Clinton Municipal Airport at

DeWitt Average Weather

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"

Did you know?

  • The highest monthly average temperature in DeWitt for July is 73 degrees.
  • The lowest monthly average temperature in DeWitt for January is 21 degrees.
  • The most monthly precipitation in DeWitt occurs in August with 9.8 inches.
  • The air quality index in DeWitt is 6% worse than the national average.
  • The pollution index in DeWitt is 68% better than the national average.

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Compare DeWitt, IA Weather To Other Cities

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 index533950
Pollution index1,592,9101,643,8365,066,862

DeWitt air quality information

MeasurementTotal
Days measured365
Days with good air quality158
Days with moderate air quality204
Days w/ poor A.Q. for sensitive groups3
Days with unhealthy air quality

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.
Andover, IA113536%
Delmar, IA497536%
Goose Lake, IA275536%
Low Moor, IA249536%
Princeton, IA1,100536%
DeWitt, IA5,264536%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Shillington, PA5,2654510%
Williamsburg, KY5,2633628%
Lucerne Valley, CA5,2638570%
Gray, LA5,2623432%
Bliss Corner, MA5,2664510%
DeWitt, IA5,264536%
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.