Chicago and its outlying area are in a temperate climate, thus experiencing= the 'typical' 4 seasons, with a home-heating season of September through= May and an air-conditioning season of June through August.

In Naperville:

Average Spring Temperature   47=B0F / 8.33=B0C

Average Summer Temperature   74=B0F / 23.33=B0C

Average Winter Temperature   27=B0F / -2.77=B0C

Average Annual Rainfall   33 inches / 83.82 cm

Average Annual Snowfall   40 inches / 81.28 cm