Historical weather data, all-time temperature records, and monthly climate averages for Rochester, MI. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5 in Rochester lands right in that awkward shoulder season — average highs of 52° with lows still dipping to freezing. The date has swung wildly over 118 years of records, from a balmy 77° back in 1909 all the way down to 15° in 1975, so don't put away that winter coat just yet. There's about a 1-in-3 chance of rain today, with a small but real 7% shot at some late-season snow.
Rochester's weather has real teeth on both ends — the thermometer has hit 104° in the July 1934 heat and plunged to -22° during February 1918, a swing of 126 degrees. A single October day in 1981 dumped 4.75 inches of rain, and December 1974 brought 18 inches of snow in one shot, which gives you a sense of just how serious this corner of Michigan can get.
Rochester's peak summer warmth arrives mid-July, when average highs reach 84°, while mid-January is the dead of winter at a frigid 30°. If you're trying to dodge rain, avoid mid-to-late June — it's the wettest stretch of the year, averaging nearly an inch per week. Spring and fall offer mild transitions, but both months can surprise you with cold snaps or early heat.