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Average humidity in Chicago (IL)

The mean monthly relative humidity over the year in Chicago (Illinois), the United States of America.


  • On average, December is the most humid month, at 76.0%.
  • On average, May is the least humid month, at 64.0%.
  • The average annual percentage of humidity is 70%.

Weather Forecasts for Chicago (IL)

Thu   Apr 25
14°C | -1°C
E 18 km/h
clear and no rain

clear and no rain

Fri   Apr 26
17°C | 6°C
SE 25 km/h
20 mm
broken clouds and rain

broken clouds and rain

Sat   Apr 27
26°C | 15°C
SW 32 km/h
1.7 mm
partly cloudy and  chance of slight rain

partly cloudy and chance of slight rain

Interested in more climate information?

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