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Mackinac Island city, Michigan

Official LSAD Designation: Mackinac Island city • Census GEOID: 2650280 • Mackinac County

Climate Normals & Weather Observations

30-year climate normals (1991–2020) and weather observations for Mackinac Island city.

Reference Weather Station: ST IGNACE, MI US (ID: USC00207275) • Located 4.5 miles from community center • Elevation: 201.5 m
Month Average High (°F) Average Low (°F) Mean Temp (°F) Precipitation (in)
January 24.6° 11.1° 17.9° 2.09"
February 25.9° 10.0° 18.0° 1.47"
March 35.0° 18.1° 26.6° 1.86"
April 46.8° 29.4° 38.1° 3.01"
May 59.0° 39.9° 49.5° 2.56"
June 70.2° 50.8° 60.5° 3.26"
July 75.5° 57.1° 66.3° 2.98"
August 74.8° 56.2° 65.5° 3.11"
September 67.8° 49.5° 58.7° 3.68"
October 55.0° 39.1° 47.1° 4.31"
November 41.7° 29.5° 35.6° 2.74"
December 31.7° 19.9° 25.8° 2.31"

Annual Temperature History

2010–2025, completed calendar years only.

NOAA station ST IGNACE, MI US (ID: USC00207275) • 4.5 miles from community center .

This is the same reference station used for monthly normals.

Annual mean Annual mean of daily highs Annual mean of daily lows
Annual temperature history at ST IGNACE, MI US Year is the horizontal axis. Annual mean temperature in degrees Fahrenheit is the vertical axis. Dots show recorded years; lines connect consecutive available years only. Missing years are gaps, with no interpolation. Optional dashed lines show annual mean of daily highs and lows. Exact values appear in the data table below. 30.0 36.3 42.5 48.8 55.0 2010 2014 2018 2021 2025 Year Annual mean temperature (°F) 2015: Annual mean 41.8°F 2016: Annual mean 44.6°F 2017: Annual mean 43.2°F 2018: Annual mean 42.0°F 2019: Annual mean 40.4°F 2020: Annual mean 43.5°F 2015: Annual mean of daily highs 49.6°F 2016: Annual mean of daily highs 52.3°F 2017: Annual mean of daily highs 50.8°F 2018: Annual mean of daily highs 50.0°F 2019: Annual mean of daily highs 48.4°F 2020: Annual mean of daily highs 51.1°F 2015: Annual mean of daily lows 34.0°F 2016: Annual mean of daily lows 36.9°F 2017: Annual mean of daily lows 35.7°F 2018: Annual mean of daily lows 33.9°F 2019: Annual mean of daily lows 32.4°F 2020: Annual mean of daily lows 35.9°F

Source: NOAA NCEI Global Summary of the Year.

Annual temperature data table (°F)
Annual station temperatures, 2010–2025. Unavailable means no reported value.
Year Annual mean (°F) Annual mean of daily highs (°F) Annual mean of daily lows (°F)
2010 Unavailable Unavailable Unavailable
2011 Unavailable Unavailable Unavailable
2012 Unavailable Unavailable Unavailable
2013 Unavailable Unavailable Unavailable
2014 Unavailable Unavailable Unavailable
2015 41.8 49.6 34.0
2016 44.6 52.3 36.9
2017 43.2 50.8 35.7
2018 42.0 50.0 33.9
2019 40.4 48.4 32.4
2020 43.5 51.1 35.9
2021 Unavailable Unavailable Unavailable
2022 Unavailable Unavailable Unavailable
2023 Unavailable Unavailable Unavailable
2024 Unavailable Unavailable Unavailable
2025 Unavailable Unavailable Unavailable
Source: NOAA NCEI 1991–2020 U.S. Climate Normals, National Weather Service.