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
December ushers in a slight temperature change, with average high-temperatures reducing from November's icy 39.2°F (4°C) to a freezing cold 28.8°F (-1.8°C). In McMillan, the nighttime temperature shows a slight difference from the daytime high, averaging to 21°F (-6.1°C) during December.Humidity
In December, the average relative humidity is 88%.Rainfall
In December, the rain falls for 7.5 days. Throughout December, 1.81" (46mm) of precipitation is accumulated. In McMillan, during the entire year, the rain falls for 123.2 days and collects up to 22.17" (563mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In McMillan, during December, snow falls for 20.4 days and regularly aggregates up to 9.37" (238mm) of snow. In McMillan, during the entire year, snow falls for 108.1 days and aggregates up to 48.31" (1227mm) of snow.Daylight
December has the shortest days of the year, with an average of 8h and 42min of daylight.On the first day of December, sunrise is at 8:06 am and sunset at 4:57 pm. On the last day of the month, sunrise is at 8:25 am and sunset at 5:06 pm EST.
Sunshine
In McMillan, the average sunshine in December is 2.1h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.Note: The maximum UV index of 1 during December leads to these instructions:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
How many days does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does McMillan have in December?
When is the sunrise / sunset in December?
How long on average sun shines in December?
What are the months with the lowest UV index in McMillan?
How high is the UV index in December?
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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