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
Transition from November to December is accompanied by a temperature drop, with average high-temperatures decreasing from a cold 37.9°F (3.3°C) to a subzero cold 23.7°F (-4.6°C). Throughout December, an average low-temperature of 12.9°F (-10.6°C) is experienced.Humidity
In Clayton, Wisconsin, the average relative humidity in December is 90%.Rainfall
In Clayton, in December, it is raining for 4.1 days, with typically 1.34" (34mm) of accumulated precipitation. In Clayton, during the entire year, the rain falls for 128.1 days and collects up to 23.46" (596mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. The month with the most snowfall is December, when snow falls for 14.7 days and typically aggregates up to 4.8" (122mm) of snow.Daylight
The month with the shortest days in Clayton is December, with an average of 8h and 48min of daylight.On the first day of the month, sunrise is at 7:28 am and sunset at 4:27 pm. On the last day of December, in Clayton, sunrise is at 7:48 am and sunset at 4:36 pm CST.
Sunshine
In December, the average sunshine is 2.9h.UV index
January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.Note: A maximum high UV index of 1 in December translates into the following recommendations:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the average humidity in December?
How much does it rain in December?
When does it snow the most?
How much does it snow in Clayton in December?
What is the month with the shortest days in Clayton?
What is the average length of the day in December?
What time are sunrise and sunset in December?
How long on average sun shines in December?
What are the months with the lowest UV index?
How high is the UV index in December in Clayton?
Average temperature in December
Clayton, WI
- Average high temperature in December: 23.7°F
The warmest month (with the highest average high temperature) is July (78.3°F).
The month with the lowest average high temperature is January (18°F).
- Average low temperature in December: 12.9°F
The month with the highest average low temperature is July (59.9°F).
The coldest month (with the lowest average low temperature) is January (5°F).
Average pressure in December
Clayton, WI
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is February (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in December
Clayton, WI
- Average wind speed in December: 8.8mph
The windiest month (with the highest average wind speed) is April (9.6mph).
The calmest month (with the lowest average wind speed) is July (6.8mph).
Average humidity in December
Clayton, WI
- Average humidity in December: 90%
The month with the highest relative humidity is January (92%).
The month with the lowest relative humidity is April (76%).
Average rainfall in December
Clayton, WI
- Average rainfall in December: 1.34"
The wettest month (with the highest rainfall) is June (3.86").
The driest month (with the least rainfall) is January (0.67").
Average rainfall days in December
Clayton, WI
- Average rainfall days in December: 4.1 days
The month with the highest number of rainy days is June (18 days).
The month with the least rainy days is January (2.7 days).
Average snowfall in December
Clayton, WI
- Average snowfall in December: 4.8"
The month with the highest snowfall is December (4.8").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Clayton, WI
- Average snowfall days in December: 14.7 days
The month with the highest number of snowfall days is January (16.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Clayton, WI
- Average daylight in December: 8h and 5min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in December: 2h and 5min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 2h and 42min).
Average sunshine days in December
Clayton, WI
- Average sunshine days in December: 15.1 days
The month with the most sunshine days is October (15.9 days).
The month with the least sunshine days is June (9.3 days).
Average UV index in December
Clayton, 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
Clayton, WI
- Average cloud cover in December: 69
The month with the most cloud cover is January (Cloud cover 72).
The months with the least cloud cover are July and August (Cloud cover 34).
Average visibility in December
Clayton, WI
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, July, September, October and November (6mi).
The months with the lowest visibility are January and February (4mi).
Clayton, Wisconsin, USA
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