Annual Weather Averages in Schoolcraft County Airport
Schoolcraft County Airport is 75 miles from Mackinac Island, so the actual climate in Mackinac Island can vary a bit.
Based on weather reports collected during 1985–2015.
All Year Climate & Weather Averages in Mackinac Island
High Temp: 73 °F
Low Temp: 11 °F
Mean Temp: 42 °F
Precipitation: 0.52"
Humidity: 75%
Dew Point: 35 °F
Wind: 8 mph
Pressure: 30.01 "Hg
Visibility: 9 mi
January Climate & Weather Averages in Mackinac Island
High Temp: 26 °F
Low Temp: 11 °F
Mean Temp: 18 °F
Precipitation: 0.06"
Humidity: 75%
Dew Point: 13 °F
Wind: 9 mph
Pressure: 30.02 "Hg
Visibility: 8 mi
February Climate & Weather Averages in Mackinac Island
High Temp: 27 °F
Low Temp: 11 °F
Mean Temp: 19 °F
Precipitation: 0.03"
Humidity: 73%
Dew Point: 13 °F
Wind: 9 mph
Pressure: 30.06 "Hg
Visibility: 9 mi
March Climate & Weather Averages in Mackinac Island
High Temp: 35 °F
Low Temp: 19 °F
Mean Temp: 27 °F
Precipitation: 0.11"
Humidity: 72%
Dew Point: 20 °F
Wind: 9 mph
Pressure: 30.06 "Hg
Visibility: 9 mi
April Climate & Weather Averages in Mackinac Island
High Temp: 47 °F
Low Temp: 30 °F
Mean Temp: 38 °F
Precipitation: 0.51"
Humidity: 69%
Dew Point: 28 °F
Wind: 9 mph
Pressure: 29.99 "Hg
Visibility: 10 mi
May Climate & Weather Averages in Mackinac Island
High Temp: 58 °F
Low Temp: 40 °F
Mean Temp: 49 °F
Precipitation: 0.74"
Humidity: 70%
Dew Point: 39 °F
Wind: 8 mph
Pressure: 30.00 "Hg
Visibility: 10 mi
June Climate & Weather Averages in Mackinac Island
High Temp: 68 °F
Low Temp: 50 °F
Mean Temp: 59 °F
Precipitation: 0.84"
Humidity: 74%
Dew Point: 50 °F
Wind: 7 mph
Pressure: 29.96 "Hg
Visibility: 9 mi
July Climate & Weather Averages in Mackinac Island
High Temp: 73 °F
Low Temp: 55 °F
Mean Temp: 64 °F
Precipitation: 0.73"
Humidity: 76%
Dew Point: 56 °F
Wind: 6 mph
Pressure: 29.97 "Hg
Visibility: 10 mi
August Climate & Weather Averages in Mackinac Island
High Temp: 73 °F
Low Temp: 55 °F
Mean Temp: 64 °F
Precipitation: 0.71"
Humidity: 77%
Dew Point: 57 °F
Wind: 7 mph
Pressure: 30.00 "Hg
Visibility: 9 mi
September Climate & Weather Averages in Mackinac Island
High Temp: 66 °F
Low Temp: 48 °F
Mean Temp: 57 °F
Precipitation: 0.94"
Humidity: 78%
Dew Point: 51 °F
Wind: 8 mph
Pressure: 30.02 "Hg
Visibility: 10 mi
October Climate & Weather Averages in Mackinac Island
High Temp: 53 °F
Low Temp: 37 °F
Mean Temp: 45 °F
Precipitation: 0.86"
Humidity: 78%
Dew Point: 39 °F
Wind: 8 mph
Pressure: 30.01 "Hg
Visibility: 10 mi
November Climate & Weather Averages in Mackinac Island
High Temp: 41 °F
Low Temp: 29 °F
Mean Temp: 35 °F
Precipitation: 0.47"
Humidity: 77%
Dew Point: 29 °F
Wind: 9 mph
Pressure: 30.01 "Hg
Visibility: 9 mi
December Climate & Weather Averages in Mackinac Island
High Temp: 31 °F
Low Temp: 18 °F
Mean Temp: 25 °F
Precipitation: 0.19"
Humidity: 78%
Dew Point: 20 °F
Wind: 9 mph
Pressure: 30.03 "Hg
Visibility: 9 mi