| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | -4.6° | -14.4° | 56.8mm | 19.7 | 0 |
| February | -3.6° | -15° | 49.9mm | 15.7 | 0 |
| March | 1.8° | -10.3° | 49.4mm | 12.7 | 5 |
| April | 8.9° | -2.3° | 72.1mm | 12.8 | 32 |
| May | 17.4° | 4.3° | 67.5mm | 11.5 | 69 |
| June | 22.3° | 9.3° | 82.1mm | 11.9 | 76 |
| July | 25.2° | 12.5° | 79.8mm | 11.3 | 77 |
| August | 24.4° | 12.3° | 83.4mm | 11.7 | 77 |
| September | 20.6° | 8.5° | 86.2mm | 13 | 74 |
| October | 12.5° | 2.7° | 117.2mm | 17.1 | 46 |
| November | 5.2° | -2.5° | 99.6mm | 17.2 | 16 |
| December | -1.2° | -9.2° | 78.4mm | 19.3 | 0 |
January in Sault Ste. Marie averages a daily high of -4.6°C with nights around -14.4°C. Expect roughly 19.7 wet days totalling 56.8mm. A hard month to visit for comfort alone.
February in Sault Ste. Marie averages a daily high of -3.6°C with nights around -15°C. Expect roughly 15.7 wet days totalling 49.9mm. A hard month to visit for comfort alone.
March in Sault Ste. Marie averages a daily high of 1.8°C with nights around -10.3°C. Expect roughly 12.7 wet days totalling 49.4mm. A hard month to visit for comfort alone.
April in Sault Ste. Marie averages a daily high of 8.9°C with nights around -2.3°C. Expect roughly 12.8 wet days totalling 72.1mm. A hard month to visit for comfort alone.
May in Sault Ste. Marie averages a daily high of 17.4°C with nights around 4.3°C. Expect roughly 11.5 wet days totalling 67.5mm. Generally workable, with some weather to plan around.
June in Sault Ste. Marie averages a daily high of 22.3°C with nights around 9.3°C. Expect roughly 11.9 wet days totalling 82.1mm. Comfortable conditions for being outdoors all day.
July in Sault Ste. Marie averages a daily high of 25.2°C with nights around 12.5°C. Expect roughly 11.3 wet days totalling 79.8mm. Comfortable conditions for being outdoors all day.
August in Sault Ste. Marie averages a daily high of 24.4°C with nights around 12.3°C. Expect roughly 11.7 wet days totalling 83.4mm. Comfortable conditions for being outdoors all day.
September in Sault Ste. Marie averages a daily high of 20.6°C with nights around 8.5°C. Expect roughly 13 wet days totalling 86.2mm. Generally workable, with some weather to plan around.
October in Sault Ste. Marie averages a daily high of 12.5°C with nights around 2.7°C. Expect roughly 17.1 wet days totalling 117.2mm. Demanding conditions — pack for it and plan indoor options.
November in Sault Ste. Marie averages a daily high of 5.2°C with nights around -2.5°C. Expect roughly 17.2 wet days totalling 99.6mm. A hard month to visit for comfort alone.
December in Sault Ste. Marie averages a daily high of -1.2°C with nights around -9.2°C. Expect roughly 19.3 wet days totalling 78.4mm. 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. Sault Ste. Marie peaks at 77.
Based on 30 years of records, May–September scores highest for comfort in Sault Ste. Marie, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 25.2°C.
October is the wettest, averaging 117.2mm of rain across roughly 17.1 wet days.
January is the coolest month, with average daily highs around -4.6°C.