Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
The onset of December results in a decrease in the average high-temperature, receding from a wintry 39.2°F (4°C) in November to a subzero cold 28.8°F (-1.8°C). During the December nights, McMillan's temperature maintains an average close to the daytime highs, settling at a still freezing cold 21°F (-6.1°C).Humidity
The average relative humidity in December in McMillan is 88%.Rainfall
In McMillan, in December, during 7.5 rainfall days, 1.81" (46mm) of precipitation is typically accumulated. Throughout the year, in McMillan, there are 123.2 rainfall days, and 22.17" (563mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In McMillan, in December, snow falls for 20.4 days, with typically accumulated 9.37" (238mm) of snow. In McMillan, Michigan, during the entire year, snow falls for 108.1 days and aggregates up to 48.31" (1227mm) of snow.Daylight
The month with the shortest days in McMillan is December, with an average of 8h and 42min of daylight.On the first day of the month, sunrise is at 8:06 am and sunset at 4:57 pm. On the last day of December, sunrise is at 8:25 am and sunset at 5:06 pm EST.
Sunshine
The average sunshine in December in McMillan, Michigan, is 2.1h.UV index
January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index in McMillan, Michigan. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: In December, the UV index of 1 transforms into the following advice:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Frequently asked questions
How cold is December in McMillan?
What is the average humidity in December in McMillan?
How much does it rain in McMillan in December?
How much does it snow in McMillan in December?
What is the month with the shortest days in McMillan?
What is the average length of the day in December in McMillan?
When is the sunrise / sunset in December in McMillan?
How many hours of sunshine does McMillan have in December?
When is the lowest UV index in McMillan?
What is the UV index reading in December in McMillan?
Average temperature in December
McMillan, MI
- Average high temperature in December: 28.8°F
The warmest month (with the highest average high temperature) is July (72.1°F).
The month with the lowest average high temperature is January (22.8°F).
- Average low temperature in December: 21°F
The month with the highest average low temperature is August (56.8°F).
The coldest month (with the lowest average low temperature) is February (13.6°F).
Average pressure in December
McMillan, 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
McMillan, MI
- Average wind speed in December: 9.8mph
The windiest month (with the highest average wind speed) is November (10.1mph).
The calmest month (with the lowest average wind speed) is July (7.1mph).
Average humidity in December
McMillan, MI
- Average humidity in December: 88%
The months with the highest relative humidity are January and February (91%).
The month with the lowest relative humidity is May (73%).
Average rainfall in December
McMillan, MI
- Average rainfall in December: 1.81"
The wettest month (with the highest rainfall) is October (2.8").
The driest month (with the least rainfall) is March (1.5").
Average rainfall days in December
McMillan, MI
- Average rainfall days in December: 7.5 days
The month with the highest number of rainy days is October (15.3 days).
The month with the least rainy days is February (3.1 days).
Average snowfall in December
McMillan, MI
- Average snowfall in December: 9.37"
The month with the highest snowfall is January (10.08").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
McMillan, MI
- Average snowfall days in December: 20.4 days
The month with the highest number of snowfall days is January (24.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
McMillan, MI
- Average daylight in December: 8h and 4min
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 1min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 1h and 36min).
Average sunshine days in December
McMillan, MI
- Average sunshine days in December: 7.6 days
The month with the most sunshine days is June (16.3 days).
The month with the least sunshine days is January (5.8 days).
Average UV index in December
McMillan, 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, November and December (UV index 1).
Average cloud cover in December
McMillan, MI
- Average cloud cover in December: 77
The month with the most cloud cover is January (Cloud cover 83).
The month with the least cloud cover is July (Cloud cover 34).
Average visibility in December
McMillan, 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 and February (4mi).
McMillan, Michigan, USA
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