Best year time to visit Mackinac Island

General weather information about Mackinac Island

Average annual temperature is 5.9 °C

Absolute maximum temperature: 22.0 °C

Absolute minimum temperature: -19.0 °C

Number of sunny days: 180 days

Number of rainy days: 132 days

Number of snow days: 53 days

Look at detailed online map of Mackinac Island

* Weather data for Mackinac Island United States is based on climate observations for 2026 year

Mackinac Island air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)1.94.22.211.115.220.421.822.021.821.211.77.4
Average daytime temperature (°C)-1.1-1.7-0.43.58.015.218.718.516.411.74.91.9
Average temperature (°C)-3.0-4.5-2.61.35.512.516.516.614.69.82.80.4
Average night temperature (°C)-4.3-6.9-4.4-0.43.410.614.815.113.18.41.2-0.9
Absolute minimum temperature (°C)-11.9-19.0-9.0-4.6-1.85.912.19.09.60.0-5.2-6.2

Mackinac Island monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)9.011.012.014.015.015.015.014.013.011.010.08.0
Daylight mean duration (h)9.110.411.913.514.915.715.314.112.510.99.58.7
Daylight minimum duration (h)8.09.011.012.014.015.014.013.011.010.08.08.0
Sunshine mean duration (h)3.05.47.87.911.111.912.711.29.66.05.43.1
Precipitation (mm)61554811349402358241185435
Sunny days8913132220181824101411
Rainy days7661691013136201214
Snow days161312100000146

Mackinac Island - weather forecast by months

Mackinac Island weather in januaryMackinac Island weather in februaryMackinac Island weather in marchMackinac Island weather in aprilMackinac Island weather in mayMackinac Island weather in juneMackinac Island weather in julyMackinac Island weather in augustMackinac Island weather in septemberMackinac Island weather in octoberMackinac Island weather in novemberMackinac Island weather in december

Best time to visit Mackinac Island:

The best time to visit Mackinac Island during the most sunny months:

  • May — 11.1(h)
  • June — 11.9(h)
  • July — 12.7(h)
  • August — 11.2(h)

Months with the longest average daylight duration in Mackinac Island:

  • June — 15.7(h)
  • July — 15.3(h)

The largest precipitation sum in Mackinac Island is at

  • April — 113(mm)
  • October — 118(mm)

    • Weather forecast in the closest to Mackinac Island admin centers

    Weather forecast in the closest towns to Mackinac Island

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    Frequently asked questions

    When is the best time to visit Mackinac Island?
    The historical weather data above shows the warmest, sunniest and driest months to help you choose the best time to visit Mackinac Island.
    What is the weather like in Mackinac Island?
    See average temperature, rainfall and daylight hours for Mackinac Island by month in the table above.
    How many sunny days does Mackinac Island have?
    The monthly weather statistics above show sunshine and rainfall patterns for Mackinac Island throughout the year.