December weather forecastMackinaw City, MI
December
Weather in December
Finally, December in Mackinaw City welcomes the full onslaught of winter. The snow-covered landscape, frigid temperatures, and brief daylight hours create a festive backdrop for the holiday season. Residents bundle up and festive lights adorn homes and streets, creating a unique winter atmosphere. Outdoor activities again shift to embrace the cold, such as ice fishing and snowmobiling. The month records an average snowfall of 5.59" (142mm), reminding us that December is indeed a snowy winter wonderland.Temperature
December brings a decrease in the average high-temperature, falling from November's wintry 40.3°F (4.6°C) to a subzero cold 30.2°F (-1°C). Nighttime, during December, brings an average low of 23°F (-5°C), a modest reduction from the day's peak.Humidity
In Mackinaw City, the average relative humidity in December is 85%.Rainfall
In Mackinaw City, during December, the rain falls for 9.2 days and regularly aggregates up to 1.73" (44mm) of precipitation. Throughout the year, there are 131 rainfall days, and 21.22" (539mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Mackinaw City, in December, during 19.2 snowfall days, 5.59" (142mm) of snow is typically accumulated. In Mackinaw City, during the entire year, snow falls for 93.6 days and aggregates up to 27.91" (709mm) of snow.Daylight
The month with the shortest days in Mackinaw City is December, with an average of 8h and 42min of daylight.On the first day of the month, sunrise is at 8:00 am and sunset at 4:56 pm. On the last day of December, sunrise is at 8:19 am and sunset at 5:04 pm EST.
Sunshine
In December, the average sunshine is 2.3h.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: A daily high UV index of 1 in December leads to these guidelines:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Mackinaw City, MI
- Average high temperature in December: 30.2°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 December: 23°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 December
Mackinaw City, MI
- Average pressure in December: 30.02"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 December
Mackinaw City, MI
- Average wind speed in December: 10.9mph
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 December
Mackinaw City, MI
- Average humidity in December: 85%
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 December
Mackinaw City, MI
- Average rainfall in December: 1.73"
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 December
Mackinaw City, MI
- Average rainfall days in December: 9.2 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 December
Mackinaw City, MI
- Average snowfall in December: 5.59"
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 December
Mackinaw City, MI
- Average snowfall days in December: 19.2 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 daylight in December /
Average sunshine in December
Mackinaw City, MI
- Average daylight in December: 8h and 42min
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 December: 2h and 18min
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 December
Mackinaw City, MI
- Average sunshine days in December: 7.6 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 December
Mackinaw City, MI
- Average UV index in December: 1
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 December
Mackinaw City, MI
- Average cloud cover in December: 75
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 December
Mackinaw City, MI
- Average visibility in December: 5mi
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).
