Monroe lies in the humid continental climate zone. Monroe receives an average of of snow a year — the lowest average snowfall for any large city in the state. July is the warmest month with an average high temperature of , and January is the coldest month with an average low temperature of . Monroe does not normally have extremely hot or cold temperatures, as its climate is moderated by the lake. On average, the temperature only drops below a couple of times during a winter season, and it is even rarer for the temperature to rise above during the summer. The coldest recorded temperature was on February 5, 1918. The highest recorded temperature was on July 24, 1934, with another equal temperature recorded on one occasion many years earlier. Climate of Monroe
