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 average high-temperature drops in December, from November's frosty 43.5°F (6.4°C) to a wintry 32.9°F (0.5°C). Throughout December, Valley Island reports a steady low-temperature average of 26.2°F (-3.2°C), slightly lower than its daytime counterpart.Humidity
The average relative humidity in December is 82%.Rainfall
In Valley Island, in December, it is raining for 9.2 days, with typically 1.34" (34mm) of accumulated precipitation. Throughout the year, there are 150.8 rainfall days, and 22.99" (584mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall. In Valley Island, in December, snow falls for 15.4 days, with typically accumulated 3.5" (89mm) of snow. Throughout the year, there are 70.3 snowfall days, and 16.77" (426mm) of snow is accumulated.Daylight
December has the shortest days of the year in Valley Island, with an average of 9h and 0min of daylight.On the first day of December, sunrise is at 7:48 am and sunset at 4:57 pm. On the last day of the month, sunrise is at 8:07 am and sunset at 5:06 pm EST.
Sunshine
In December, the average sunshine is 3.1h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index, 1 in December, converts into the following recommendations:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
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?
What is the average length of the day in December in Valley Island?
When are sunrise and sunset in December?
How long on average sun shines in December?
When is the lowest UV index?
How high is the UV index in December?
Average temperature in December
Valley Island, MI
- Average high temperature in December: 32.9°F
The warmest month (with the highest average high temperature) is July (75.4°F).
The month with the lowest average high temperature is January (27°F).
- Average low temperature in December: 26.2°F
The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).
Average pressure in December
Valley Island, MI
- Average pressure in December: 30.05"Hg
The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Valley Island, MI
- Average wind speed in December: 11.9mph
The windiest months (with the highest average wind speed) are January and December (11.9mph).
The calmest month (with the lowest average wind speed) is July (7.5mph).
Average humidity in December
Valley Island, MI
- Average humidity in December: 82%
The months with the highest relative humidity are January and February (86%).
The months with the lowest relative humidity are April and May (77%).
Average rainfall in December
Valley Island, MI
- Average rainfall in December: 1.34"
The wettest month (with the highest rainfall) is May (2.56").
The driest month (with the least rainfall) is February (1.26").
Average rainfall days in December
Valley Island, MI
- Average rainfall days in December: 9.2 days
The month with the highest number of rainy days is October (16.3 days).
The month with the least rainy days is February (5.3 days).
Average snowfall in December
Valley Island, MI
- Average snowfall in December: 3.5"
The month with the highest snowfall is January (3.9").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Valley Island, MI
- Average snowfall days in December: 15.4 days
The month with the highest number of snowfall days is January (17.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Valley Island, MI
- Average daylight in December: 9h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in December: 3h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 2h and 36min).
Average sunshine days in December
Valley Island, MI
- Average sunshine days in December: 8.7 days
The month with the most sunshine days is September (15 days).
The months with the least sunshine days are February and December (8.7 days).
Average UV index in December
Valley Island, 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 and December (UV index 1).
Average cloud cover in December
Valley Island, MI
- Average cloud cover in December: 68
The month with the most cloud cover is January (Cloud cover 72).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in December
Valley Island, MI
- Average visibility in December: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
Valley Island, Michigan, USA
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