May weather in Mackinac Island, MI
The average temperature in Mackinac Island in May is 49.5°F (39.9°F–59.0°F). Average precipitation: 2.56 inches.
May is a spring month in Mackinac Island, and is warmer than the annual average of 42.5°F. Daily temperatures swing about 19.1°F between overnight low and afternoon high. Daylight averages about 14h 44m. For travel, May is a comfortable month to visit.
Avg High
59.0°F
Avg Low
39.9°F
Precipitation
2.56 in
Daylight
14h 44m
May records in Mackinac Island
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 64.9°F (2013) | 27.0°F (2018) | 0.52 in (2020) |
| May 2 | 75.0°F (2018) | 33.1°F (2018) | 0.46 in (2017) |
| May 3 | 68.0°F (2015) | 30.0°F (2011) | 0.65 in (2018) |
| May 4 | 73.0°F (2015) | 28.9°F (2019) | 0.96 in (2018) |
| May 5 | 70.0°F (2015) | 30.0°F (2011) | 0.46 in (2010) |
| May 6 | 66.0°F (2015) | 30.0°F (2020) | 0.07 in (2019) |
| May 7 | 68.0°F (2016) | 30.9°F (2017) | 0.35 in (2012) |
| May 8 | 66.9°F (2015) | 25.0°F (2020) | 0.12 in (2021) |
| May 9 | 71.1°F (2015) | 26.1°F (2020) | 0.61 in (2019) |
| May 10 | 66.9°F (2013) | 28.0°F (2020) | 0.28 in (2018) |
| May 11 | 54.0°F (2010) | 28.9°F (2020) | 0.08 in (2011) |
| May 12 | 59.0°F (2016) | 27.0°F (2020) | 0.45 in (2011) |
| May 13 | 59.0°F (2016) | 26.1°F (2020) | 0.34 in (2016) |
| May 14 | 66.0°F (2012) | 30.0°F (2020) | 0.26 in (2010) |
| May 15 | 72.0°F (2012) | 28.9°F (2016) | 0.27 in (2020) |
| May 16 | 75.0°F (2012) | 30.0°F (2016) | 0.07 in (2015) |
| May 17 | 68.0°F (2018) | 33.1°F (2016) | 0.06 in (2019) |
| May 18 | 72.0°F (2017) | 36.0°F (2016) | 0.26 in (2015) |
| May 19 | 77.0°F (2010) | 32.0°F (2017) | 1.09 in (2017) |
| May 20 | 73.9°F (2010) | 32.0°F (2015) | 0.76 in (2019) |
| May 21 | 80.1°F (2012) | 34.0°F (2015) | 0.26 in (2013) |
| May 22 | 80.1°F (2021) | 33.1°F (2015) | 0.46 in (2013) |
| May 23 | 73.0°F (2016) | 34.0°F (2015) | 0.16 in (2017) |
| May 24 | 72.0°F (2018) | 33.1°F (2013) | 0.05 in (2011) |
| May 25 | 73.9°F (2016) | 39.9°F (2011) | 0.74 in (2015) |
| May 26 | 75.9°F (2021) | 42.1°F (2019) | 0.69 in (2015) |
| May 27 | 82.9°F (2010) | 34.0°F (2021) | 0.12 in (2015) |
| May 28 | 81.0°F (2010) | 33.1°F (2013) | 0.28 in (2019) |
| May 29 | 81.0°F (2012) | 34.0°F (2021) | 0.99 in (2020) |
| May 30 | 82.0°F (2010) | 39.0°F (2021) | 0.35 in (2015) |
| May 31 | 71.1°F (2010) | 35.1°F (2020) | 0.38 in (2018) |