| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 0.2° | -6.9° | 57.2mm | 13.1 | 5 |
| February | 1.7° | -6.2° | 45.8mm | 9.8 | 13 |
| March | 7.5° | -2.9° | 51.5mm | 9.4 | 34 |
| April | 13.6° | 2° | 69.8mm | 11.2 | 57 |
| May | 21.3° | 9.2° | 97mm | 12.5 | 75 |
| June | 26.3° | 14.9° | 86.1mm | 10.7 | 79 |
| July | 28.2° | 17.1° | 83.2mm | 10.2 | 75 |
| August | 27.4° | 16.6° | 85.6mm | 10.1 | 78 |
| September | 23.6° | 12.5° | 69.4mm | 8.9 | 82 |
| October | 16.6° | 6.4° | 69.4mm | 12.4 | 64 |
| November | 8° | -0.3° | 65.7mm | 10 | 38 |
| December | 3° | -3.6° | 60.4mm | 14.1 | 9 |
January in Rochester Hills averages a daily high of 0.2°C with nights around -6.9°C. Expect roughly 13.1 wet days totalling 57.2mm. A hard month to visit for comfort alone.
February in Rochester Hills averages a daily high of 1.7°C with nights around -6.2°C. Expect roughly 9.8 wet days totalling 45.8mm. A hard month to visit for comfort alone.
March in Rochester Hills averages a daily high of 7.5°C with nights around -2.9°C. Expect roughly 9.4 wet days totalling 51.5mm. A hard month to visit for comfort alone.
April in Rochester Hills averages a daily high of 13.6°C with nights around 2°C. Expect roughly 11.2 wet days totalling 69.8mm. Generally workable, with some weather to plan around.
May in Rochester Hills averages a daily high of 21.3°C with nights around 9.2°C. Expect roughly 12.5 wet days totalling 97mm. Comfortable conditions for being outdoors all day.
June in Rochester Hills averages a daily high of 26.3°C with nights around 14.9°C. Expect roughly 10.7 wet days totalling 86.1mm. Comfortable conditions for being outdoors all day.
July in Rochester Hills averages a daily high of 28.2°C with nights around 17.1°C. Expect roughly 10.2 wet days totalling 83.2mm. Comfortable conditions for being outdoors all day.
August in Rochester Hills averages a daily high of 27.4°C with nights around 16.6°C. Expect roughly 10.1 wet days totalling 85.6mm. Comfortable conditions for being outdoors all day.
September in Rochester Hills averages a daily high of 23.6°C with nights around 12.5°C. Expect roughly 8.9 wet days totalling 69.4mm. Comfortable conditions for being outdoors all day.
October in Rochester Hills averages a daily high of 16.6°C with nights around 6.4°C. Expect roughly 12.4 wet days totalling 69.4mm. Generally workable, with some weather to plan around.
November in Rochester Hills averages a daily high of 8°C with nights around -0.3°C. Expect roughly 10 wet days totalling 65.7mm. Demanding conditions — pack for it and plan indoor options.
December in Rochester Hills averages a daily high of 3°C with nights around -3.6°C. Expect roughly 14.1 wet days totalling 60.4mm. A hard month to visit for comfort alone.
Each month scores out of 100. It starts at 100 and loses points for daytime highs outside a 20–27°C band, for wet days, and for nights below 2°C. Nothing else is weighted in — no crowd data, no prices, no opinion. Rochester Hills peaks at 82.
Based on 30 years of records, May–September scores highest for comfort in Rochester Hills, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 28.2°C.
May is the wettest, averaging 97mm of rain across roughly 12.5 wet days.
January is the coolest month, with average daily highs around 0.2°C.