Winters in Rochester Hills are cold and variable, with temperatures often dropping below freezing but occasionally rising into the mid-teens. The coldest months are typically February and January, when average lows can dip as low as -27°C. As spring approaches, temperatures gradually warm up, with April and May bringing mild highs in the 20s and 30s. Summer brings warm days in the 30s and occasional heatwaves, but overnight lows rarely rise above 15°C. Autumn is generally cooler than summer, with a return to more variable temperatures that can fluctuate widely from day to day.