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DuPage County, Illinois, gets 37 inches of rain per year. The US average is 39. Snowfall is 33 inches. The average US city gets 26 inches of snow per year. The number of days with any measurable precipitation is 69.

On average, there are 189 sunny days per year in DuPage County, Illinois. The July high is around 84 degrees. The January low is 16. Sperling's comfort index for DuPage County is a 42 out of 100, where a higher score indicates a more comfortable year-around climate. The US average for the comfort index is 54. Our index is based on the total number of days annually within the comfort range of 70-80 degrees, and we also applied a penalty for days of excessive humidity.

  CLIMATEDuPage, IllinoisUnited States
  Rainfall (in.)  37.406639.2
  Snowfall (in.)  33.236725.8
  Precipitation Days  69.1102
  Sunny Days  189205
  Avg. July High  83.78686.1
  Avg. Jan. Low  15.72822.6
  Comfort Index (higher=better)  4254
  UV Index  3.44.3
  Elevation ft.  7291,443

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