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 arrival of December brings a distinct temperature shift, with the average high-temperature dropping from a wintry 36.5°F (2.5°C) in November to a freezing cold 22.1°F (-5.5°C). Superior anticipates an average minimum temperature of 12.2°F (-11°C) in the month of December.Humidity
In Superior, the average relative humidity in December is 89%.Rainfall
In Superior, in December, it is raining for 2 days, with typically 0.39" (10mm) of accumulated precipitation. In Superior, during the entire year, the rain falls for 55.7 days and collects up to 4.33" (110mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. December is the month with the most snowfall. Snow falls for 9.3 days and accumulates 0.98" (25mm) of snow.Daylight
With an average of 8h and 36min of daylight, December has the shortest days of the year in Superior.On the first day of December, sunrise is at 7:33 am and sunset at 4:22 pm. On the last day of the month, sunrise is at 7:52 am and sunset at 4:30 pm CST.
Sunshine
The average sunshine in December in Superior is 3h.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 estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index of 1 in December interprets into the following recommendations:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Frequently asked questions
How cold is it in Superior in December?
What is the average humidity in December in Superior?
How much does it rain in Superior in December?
What is the snowiest month in Superior?
How much does it snow in Superior in December?
What is the month with the shortest days in Superior?
How many hours of daylight does Superior have in December?
When is the sunrise / sunset in December in Superior?
How many hours of sunshine does Superior have in December?
What are the months with the lowest UV index in Superior?
How high is the UV index in December in Superior?
Average temperature in December
Superior, WI
- Average high temperature in December: 22.1°F
The warmest month (with the highest average high temperature) is July (77.7°F).
The month with the lowest average high temperature is January (17.1°F).
- Average low temperature in December: 12.2°F
The month with the highest average low temperature is July (57.7°F).
The coldest month (with the lowest average low temperature) is January (4.1°F).
Average pressure in December
Superior, WI
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is February (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in December
Superior, WI
- Average wind speed in December: 8.3mph
The windiest month (with the highest average wind speed) is April (8.7mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).
Average humidity in December
Superior, WI
- Average humidity in December: 89%
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is May (72%).
Average rainfall in December
Superior, WI
- Average rainfall in December: 0.39"
The wettest month (with the highest rainfall) is July (0.67").
The driest months (with the least rainfall) are January and February (0.16").
Average rainfall days in December
Superior, WI
- Average rainfall days in December: 2 days
The month with the highest number of rainy days is May (7.9 days).
The month with the least rainy days is February (0.5 days).
Average snowfall in December
Superior, WI
- Average snowfall in December: 0.98"
The month with the highest snowfall is December (0.98").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Superior, WI
- Average snowfall days in December: 9.3 days
The months with the highest number of snowfall days are January and December (9.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Superior, WI
- Average daylight in December: 8h and 4min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in December: 3h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).
Average sunshine days in December
Superior, WI
- Average sunshine days in December: 23.6 days
The month with the most sunshine days is January (25.7 days).
The month with the least sunshine days is April (19.9 days).
Average UV index in December
Superior, 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, February, November and December (UV index 1).
Average cloud cover in December
Superior, WI
- Average cloud cover in December: 70
The month with the most cloud cover is January (Cloud cover 72).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in December
Superior, WI
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, July, September, October and November (6mi).
The month with the lowest visibility is January (4mi).
Superior, Wisconsin, USA
Weather forecast for your location
2. Allow the app to use your location
