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 sea temperature 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's onset brings a reduction in the average high-temperature, from a frosty 45.7°F in November to a cold 35.2°F. Detroit sustains a near constant temperature throughout December, with nighttime averages of 27.5°F.Humidity
In December, the average relative humidity in Detroit is 81%.Rainfall
In December, in Detroit, the rain falls for 8.5 days. Throughout December, 1.26" of precipitation is accumulated. Throughout the year, there are 152.1 rainfall days, and 23.43" of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Detroit, during December, snow falls for 12.4 days and regularly aggregates up to 2.28" of snow. Throughout the year, there are 54.3 snowfall days, and 14.84" of snow is accumulated.Ocean temperature
In Detroit, in December, the average water temperature is 38.1°F.Note: In the case of swimming, this is seriously cold, dangerous, and can result in death. Without the safeguard of insulated waterproof attire, hypothermia manifests rapidly.
Daylight
With an average of 9h and 6min of daylight, December has the shortest days of the year in Detroit.On the first day of the month, sunrise is at 7:41 am and sunset at 5:00 pm. On the last day of December, sunrise is at 8:01 am and sunset at 5:09 pm EST.
Sunshine
In December, the average sunshine is 3.6h.UV index
December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum UV index, 1 during December, leads to the following recommendations:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
FAQ
How cold is December in Detroit?
What is the average humidity in December in Detroit?
How much does it rain in Detroit in December?
How many days does it snow in December in Detroit?
How cold is the water in December in Detroit?
What is the month with the shortest days in Detroit?
What is the average length of the day in December in Detroit?
When are sunrise and sunset in December in Detroit?
How long on average sun shines in December in Detroit?
What is the month with the lowest UV index in Detroit?
What is the UV index reading in December in Detroit?
Average temperature in December
Detroit, MI
- Average high temperature in December: 35.2°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (29.3°F).
- Average low temperature in December: 27.5°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (19.6°F).
Average pressure in December
Detroit, MI
- Average pressure in December: 30.08"Hg
The month with the highest atmospheric pressure is November (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Detroit, MI
- Average wind speed in December: 10.3mph
The windiest month (with the highest average wind speed) is January (10.5mph).
The calmest month (with the lowest average wind speed) is July (6.8mph).
Average humidity in December
Detroit, MI
- Average humidity in December: 81%
The month with the highest relative humidity is February (85%).
The months with the lowest relative humidity are July and August (73%).
Average rainfall in December
Detroit, MI
- Average rainfall in December: 1.26"
The wettest month (with the highest rainfall) is May (2.87").
The driest month (with the least rainfall) is February (1.22").
Average rainfall days in December
Detroit, MI
- Average rainfall days in December: 8.5 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (7.1 days).
Average snowfall in December
Detroit, MI
- Average snowfall in December: 2.28"
The month with the highest snowfall is January (4.29").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Detroit, MI
- Average snowfall days in December: 12.4 days
The month with the highest number of snowfall days is January (14.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in December
Detroit, MI
- Average sea temperature in December: 38.2°F
The best month for swimming (with the highest average sea temperature) is August (75.4°F).
The coldest month (with the lowest average sea temperature) is February (32.7°F).
Average daylight in December /
Average sunshine in December
Detroit, MI
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 3h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).
Average sunshine days in December
Detroit, MI
- Average sunshine days in December: 13 days
The month with the most sunshine days is November (15.2 days).
The month with the least sunshine days is February (10.7 days).
Average UV index in December
Detroit, MI
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Detroit, MI
- Average cloud cover in December: 62
The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in December
Detroit, MI
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Detroit, Michigan, USA
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