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 ushers in a slight temperature change, with average high-temperatures reducing from November's chilly 43.7°F (6.5°C) to an icy 32.9°F (0.5°C). Throughout December, a modest shift from daytime highs is anticipated in Whitefish Bay, with an average low-temperature of 25°F (-3.9°C).Humidity
In Whitefish Bay, the average relative humidity in December is 81%.Rainfall
The month with the least rainfall is December, when the rain falls for 5.5 days and typically collects 0.71" (18mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. In Whitefish Bay, during December, snow falls for 7.7 days and regularly aggregates up to 1.3" (33mm) of snow. Throughout the year, there are 42.5 snowfall days, and 8.23" (209mm) of snow is accumulated.Ocean temperature
In Whitefish Bay, the average seawater temperature in December is 40.1°F (4.5°C).Note: Regarding swimming, this is extremely cold, hazardous, and can lead to death. Hypothermia sets in rapidly without the protection of insulating waterproof gear.
Daylight
With an average of 9h and 6min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:04 am and sunset at 4:17 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 4:26 pm CST.
Sunshine
In December, the average sunshine is 4h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index of 1 during December translates into the following directions:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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?
What is the driest month?
How much does it rain in December?
How much does it snow in December?
What is the ocean temperature in December?
What is the month with the shortest days?
How many hours of daylight does Whitefish Bay have in December?
When are sunrise and sunset in December?
How many hours of sunshine does Whitefish Bay have in December?
What are the months with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Whitefish Bay, WI
- Average high temperature in December: 32.9°F
The warmest month (with the highest average high temperature) is July (75.7°F).
The month with the lowest average high temperature is January (26.8°F).
- Average low temperature in December: 25°F
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).
Average pressure in December
Whitefish Bay, WI
- Average pressure in December: 30.08"Hg
The months with the highest atmospheric pressure are January, February and March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Whitefish Bay, WI
- Average wind speed in December: 11.8mph
The windiest month (with the highest average wind speed) is January (12.6mph).
The calmest month (with the lowest average wind speed) is July (7.7mph).
Average humidity in December
Whitefish Bay, WI
- Average humidity in December: 81%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (75%).
Average rainfall in December
Whitefish Bay, WI
- Average rainfall in December: 0.71"
The wettest month (with the highest rainfall) is July (2.56").
The driest month (with the least rainfall) is December (0.71").
Average rainfall days in December
Whitefish Bay, WI
- Average rainfall days in December: 5.5 days
The months with the highest number of rainy days are May, June and July (15.2 days).
The month with the least rainy days is February (4.5 days).
Average snowfall in December
Whitefish Bay, WI
- Average snowfall in December: 1.3"
The month with the highest snowfall is January (2.17").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Whitefish Bay, WI
- Average snowfall days in December: 7.7 days
The month with the highest number of snowfall days is January (12.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in December
Whitefish Bay, WI
- Average sea temperature in December: 40.1°F
The best month for swimming (with the highest average sea temperature) is August (71.9°F).
The coldest month (with the lowest average sea temperature) is February (36°F).
Average daylight in December /
Average sunshine in December
Whitefish Bay, WI
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 4h and 0min
The months with the most sunshine are July and August (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in December
Whitefish Bay, WI
- Average sunshine days in December: 18.2 days
The month with the most sunshine days is December (18.2 days).
The month with the least sunshine days is June (12.3 days).
Average UV index in December
Whitefish Bay, WI
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Whitefish Bay, WI
- Average cloud cover in December: 59
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is July (Cloud cover 26).
Average visibility in December
Whitefish Bay, WI
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Whitefish Bay, Wisconsin, USA
Weather forecast for your location
2. Allow the app to use your location