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Warrenville, Illinois, gets 36 inches of rain per year. The US average is 37. Snowfall is 33 inches. The average US city gets 25 inches of snow per year. The number of days with any measurable precipitation is 109.

On average, there are 192 sunny days per year in Warrenville, Illinois. The July high is around 86 degrees. The January low is 14. Our comfort index, which is based on humidity during the hot months, is a 44 out of 100, where higher is more comfortable. The US average on the comfort index is 44.

  CLIMATEWarrenville, IllinoisUnited States
  Rainfall (in.)  36.336.5
  Snowfall (in.)  3325
  Precipitation Days  109100
  Sunny Days  192205
  Avg. July High  8686.5
  Avg. Jan. Low  14.120.5
  Comfort Index (higher=better)  4444
  UV Index  3.44.3
  Elevation ft.  7121,443

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