October weather forecastMackinac Island, MI
October
Weather in October
October on Mackinac Island features a pronounced shift in weather. The fall sets in earnest with an average high temperature decreasing to 52.3°F (11.3°C). Progressive shortening of the daylight hours and a simultaneous increase in rainfall add to the overall chill. The changing colours of the foliage become more vibrant, painting the island in an array of red, orange, and gold hues. October weather ushers in a quieter and reflective time on the island.Temperature
Mackinac Island, Michigan, in October demonstrates a small temperature transition, adjusting from an average high of a refreshing 64.8°F (18.2°C) in September to a cool 52.3°F (11.3°C). October nights in Mackinac Island experience a minor temperature downturn to a frosty 43.7°F (6.5°C).Humidity
In Mackinac Island, the average relative humidity in October is 79%.Rainfall
The month with the most rainfall in Mackinac Island is October, when the rain falls for 16.5 days and typically aggregates up to 2.72" (69mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. October is the first month it typically snows. Throughout October, in the average 2 snowfall days, it receives 0.31" (8mm) of snow. In Mackinac Island, during the entire year, snow falls for 93.6 days and aggregates up to 27.91" (709mm) of snow.Ocean temperature
In October, the average ocean temperature is 50°F (10°C).Note: Without suitable protection, venturing into 50°F (10°C) waters cooler than 50°F (10°C) can lead to pronounced cold shock and rapid breaths.
Daylight
In October, the average length of the day in Mackinac Island, Michigan, is 10h and 55min.On the first day of October, sunrise is at 7:37 am and sunset at 7:18 pm. On the last day of the month, sunrise is at 8:18 am and sunset at 6:25 pm EDT.
Sunshine
The average sunshine in October in Mackinac Island, Michigan, is 4.8h.UV index
In October, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for the ordinary person.Note: The daily high UV index of 2 in October translates into this advice:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in October
Mackinac Island, MI
- Average high temperature in October: 52.3°F
The warmest month (with the highest average high temperature) is July (71.4°F).
The month with the lowest average high temperature is January (23.4°F).
- Average low temperature in October: 43.7°F
The month with the highest average low temperature is August (58.6°F).
The coldest month (with the lowest average low temperature) is February (14.4°F).
Average pressure in October
Mackinac Island, MI
- Average pressure in October: 29.96"Hg
The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in October
Mackinac Island, MI
- Average wind speed in October: 10.3mph
The windiest months (with the highest average wind speed) are November and December (10.9mph).
The calmest months (with the lowest average wind speed) are June and July (7.6mph).
Average humidity in October
Mackinac Island, MI
- Average humidity in October: 79%
The months with the highest relative humidity are January and February (89%).
The month with the lowest relative humidity is May (75%).
Average rainfall in October
Mackinac Island, MI
- Average rainfall in October: 2.72"
The wettest month (with the highest rainfall) is October (2.72").
The driest month (with the least rainfall) is January (1.3").
Average rainfall days in October
Mackinac Island, MI
- Average rainfall days in October: 16.5 days
The month with the highest number of rainy days is October (16.5 days).
The month with the least rainy days is February (5.3 days).
Average snowfall in October
Mackinac Island, MI
- Average snowfall in October: 0.31"
The month with the highest snowfall is January (5.91").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in October
Mackinac Island, MI
- Average snowfall days in October: 2 days
The month with the highest number of snowfall days is January (21.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in October
Mackinac Island, MI
- Average sea temperature in October: 50°F
The best month for swimming (with the highest average sea temperature) is August (61°F).
The coldest months (with the lowest average sea temperature) are February, March and April (36°F).
Average daylight in October /
Average sunshine in October
Mackinac Island, MI
- Average daylight in October: 10h and 54min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in October: 4h and 48min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 1h and 54min).
Average sunshine days in October
Mackinac Island, MI
- Average sunshine days in October: 11.5 days
The month with the most sunshine days is September (16.9 days).
The month with the least sunshine days is January (7.1 days).
Average UV index in October
Mackinac Island, MI
- Average UV index in October: 2
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 1).
Average cloud cover in October
Mackinac Island, MI
- Average cloud cover in October: 54
The month with the most cloud cover is January (Cloud cover 80).
The months with the least cloud cover are July and August (Cloud cover 32).
Average visibility in October
Mackinac Island, MI
- Average visibility in October: 6mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).
