| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 0.1° | -7.1° | 59.7mm | 10.5 | 10 |
| February | 1.5° | -6.7° | 53.2mm | 8.3 | 15 |
| March | 6.7° | -2.6° | 60.7mm | 8.2 | 34 |
| April | 13.4° | 2.9° | 79.7mm | 11 | 57 |
| May | 20° | 9.4° | 103.5mm | 12.1 | 76 |
| June | 25.6° | 15.1° | 91.8mm | 10.9 | 78 |
| July | 28.2° | 17.8° | 91.2mm | 9.8 | 76 |
| August | 27.1° | 17.2° | 94.4mm | 9.4 | 81 |
| September | 23.4° | 13.2° | 81.5mm | 8.3 | 83 |
| October | 16.5° | 7.2° | 70mm | 10.3 | 68 |
| November | 9.1° | 0.9° | 63.1mm | 8.8 | 46 |
| December | 3.1° | -3.5° | 64.4mm | 10.4 | 17 |
January in Saint Clair Shores averages a daily high of 0.1°C with nights around -7.1°C. Expect roughly 10.5 wet days totalling 59.7mm. A hard month to visit for comfort alone.
February in Saint Clair Shores averages a daily high of 1.5°C with nights around -6.7°C. Expect roughly 8.3 wet days totalling 53.2mm. A hard month to visit for comfort alone.
March in Saint Clair Shores averages a daily high of 6.7°C with nights around -2.6°C. Expect roughly 8.2 wet days totalling 60.7mm. A hard month to visit for comfort alone.
April in Saint Clair Shores averages a daily high of 13.4°C with nights around 2.9°C. Expect roughly 11 wet days totalling 79.7mm. Generally workable, with some weather to plan around.
May in Saint Clair Shores averages a daily high of 20°C with nights around 9.4°C. Expect roughly 12.1 wet days totalling 103.5mm. Comfortable conditions for being outdoors all day.
June in Saint Clair Shores averages a daily high of 25.6°C with nights around 15.1°C. Expect roughly 10.9 wet days totalling 91.8mm. Comfortable conditions for being outdoors all day.
July in Saint Clair Shores averages a daily high of 28.2°C with nights around 17.8°C. Expect roughly 9.8 wet days totalling 91.2mm. Comfortable conditions for being outdoors all day.
August in Saint Clair Shores averages a daily high of 27.1°C with nights around 17.2°C. Expect roughly 9.4 wet days totalling 94.4mm. Comfortable conditions for being outdoors all day.
September in Saint Clair Shores averages a daily high of 23.4°C with nights around 13.2°C. Expect roughly 8.3 wet days totalling 81.5mm. Comfortable conditions for being outdoors all day.
October in Saint Clair Shores averages a daily high of 16.5°C with nights around 7.2°C. Expect roughly 10.3 wet days totalling 70mm. Generally workable, with some weather to plan around.
November in Saint Clair Shores averages a daily high of 9.1°C with nights around 0.9°C. Expect roughly 8.8 wet days totalling 63.1mm. Demanding conditions — pack for it and plan indoor options.
December in Saint Clair Shores averages a daily high of 3.1°C with nights around -3.5°C. Expect roughly 10.4 wet days totalling 64.4mm. 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. Saint Clair Shores peaks at 83.
Based on 30 years of records, May–September scores highest for comfort in Saint Clair Shores, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 28.2°C.
May is the wettest, averaging 103.5mm of rain across roughly 12.1 wet days.
January is the coolest month, with average daily highs around 0.1°C.