Sugar Island, MI climate
Sugar Island has cold, snowy winters and cool summers. A typical July afternoon reaches 76°, a January night drops to 8°, and about 120 inches of snow falls in a normal winter.
NOAA 1991-2020 climate normals Updated once a decadeWhat a year in Sugar Island feels like
Winter
Spring
Summer
Fall
Sugar Island weather by month
Average highs, lows, rain and snow for every month, from NOAA’s 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 24° | 8° | 2.4" | 30.3" | 19 | 31 | 1° – 25° |
| February | 26° | 8° | 1.7" | 20.7" | 14 | 29 | 2° – 29° |
| March | 35° | 16° | 1.9" | 13.0" | 12 | 29 | 14° – 37° |
| April | 47° | 29° | 2.7" | 7.6" | 12 | 12 | 31° – 45° |
| May | 62° | 40° | 2.8" | 0.4" | 11 | 0 | 44° – 57° |
| June | 72° | 50° | 3.2" | 0 | 11 | 0 | 56° – 65° |
| July | 76° | 55° | 3.2" | 0 | 11 | 0 | 58° – 70° |
| August | 75° | 55° | 3.3" | 0 | 11 | 0 | 61° – 69° |
| September | 67° | 48° | 3.8" | 0 | 13 | 0 | 52° – 63° |
| October | 53° | 38° | 4.4" | 1.7" | 17 | 0 | 41° – 51° |
| November | 41° | 28° | 3.3" | 16.0" | 17 | 11 | 27° – 41° |
| December | 30° | 17° | 3.0" | 30.4" | 19 | 26 | 12° – 33° |
| Year | 50° | 33° | 35.6" | 120.1" | 165 | 137 |
“Wet days” have at least 0.01" of rain or melted snow. “Snow on ground” counts days with 1" or more. The 30-year range is the coldest and warmest that month’s average temperature got between 1991 and 2020.
Rain and snow in Sugar Island
Sugar Island gets 36 inches of rain and melted snow a year. October is the wettest month and February the driest. Rain or snow falls on about 165 days a year. Snow covers the ground about 137 days of the year.
About 151 frost-free days a year
In half of years the last 32° night comes by May 9 and the first one by October 11. That leaves about 151 frost-free days for gardens, shorter than 80% of U.S. towns.
Heating and cooling a home in Sugar Island
Engineers use “degree days” to estimate how hard a furnace or air conditioner works. In Sugar Island, 97% of that work is heating and 3% is cooling, so the furnace matters far more than the air conditioner.
Degree days measure how far each day’s average temperature falls below or rises above 65°, added up over a year. Source: NOAA station normals.
Sugar Island and its neighbors
Sugar Island borders 2 towns with climate data. January nights across them vary by 0.8°. Sault Ste. Marie has the coldest January nights (8°) and Soo the hottest July afternoons (76°). Sugar Island’s January low is 8° and its July high 76°.