Winters in Bolingbrook are quite chilly, with temperatures often dropping below freezing and averaging around 0°C. The coldest months, January and February, can see temperatures as low as -22°C, while March brings a welcome increase in warmth. Spring is a gradual warming process, with April and May temperatures steadily rising to averages of 10°C and 15°C, respectively. Summers are warm but not sweltering, with July and August averaging around 23-25°C, while September and October see a gentle cooling trend back towards autumnal temperatures. Frosts can still occur in November, but December temperatures are generally mild, though still quite cool overall.