Climate averages 1991–2020
Sault Ste. Marie weather
in May.
A mild, moderately wet month: the 5th warmest and the 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a mild month in Sault Ste. Marie: daytime highs average 15.4°C and nights cool to about 5.6°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 72 mm of rain on roughly 10 days, which makes May a moderately wet month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 59 min on an average May day.
The nearest other city in this atlas is Greater Sudbury (256 km away). In May its highs average 16.8°C, 1.5°C warmer than Sault Ste. Marie, with 72 mm of rain.
Among the 86 cities listed in Canada, Sault Ste. Marie ranks 76th of 86 for the warmest May highs and joint 14th of 86 for the driest May (rainfall, lowest first). The mean May high of those 86 cities is 17.0°C; Sault Ste. Marie is 1.6°C cooler than that mean.
From May to June, average highs rise by 5.6°C to 21.0°C, and monthly rainfall rises from 72 mm to 81 mm.
The annual picture
May in context
Monthly precipitation
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Sault Ste. Marie climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | -6.5°C-13.1°C | -13.1°C | 46 | 10.2 | 9.09 h |
| February | -6.0°C-12.6°C | -12.6°C | 36 | 7.6 | 10.310 h |
| March | -0.5°C-7.6°C | -7.6°C | 46 | 8.3 | 11.912 h |
| April | 7.0°C-1.4°C | -1.4°C | 67 | 10.2 | 13.514 h |
| May, selected | 15.4°C5.6°C | 5.6°C | 72 | 10.0 | 15.015 h |
| June | 21.0°C11.8°C | 11.8°C | 81 | 9.8 | 15.816 h |
| July | 23.3°C15.4°C | 15.4°C | 101 | 11.4 | 15.415 h |
| August | 22.8°C15.5°C | 15.5°C | 95 | 10.9 | 14.214 h |
| September | 18.8°C12.0°C | 12.0°C | 108 | 12.1 | 12.613 h |
| October | 11.5°C5.5°C | 5.5°C | 101 | 13.7 | 10.911 h |
| November | 4.4°C-0.8°C | -0.8°C | 67 | 11.2 | 9.59 h |
| December | -1.7°C-7.7°C | -7.7°C | 56 | 11.1 | 8.79 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
May in nearby cities
- Greater Sudbury in MayCanada · 256 kmHigh 16.8°C · Low 5.8°C · 72 mm rain
- Green Bay in MayUnited States · 363 kmHigh 18.5°C · Low 8.7°C · 86 mm rain
- Flint in MayUnited States · 393 kmHigh 19.8°C · Low 9.5°C · 92 mm rain
- Appleton in MayUnited States · 405 kmHigh 18.5°C · Low 8.7°C · 85 mm rain
- Grand Rapids in MayUnited States · 409 kmHigh 19.6°C · Low 9.7°C · 108 mm rain
- Wyoming in MayUnited States · 415 kmHigh 19.5°C · Low 9.6°C · 108 mm rain
- Lansing in MayUnited States · 421 kmHigh 20.0°C · Low 9.8°C · 101 mm rain
- Sarnia in MayCanada · 422 kmHigh 18.3°C · Low 9.7°C · 85 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Sault Ste. Marie) is explained once on the Sault Ste. Marie year overview and on the Sources, method and limits page.