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
December comes with a decrease in the average high-temperature, falling from an icy 42.1°F (5.6°C) in November to a freezing cold 29.8°F (-1.2°C). During December, Waunakee's temperature averages to 19.6°F (-6.9°C) at night.Humidity
In December, the average relative humidity is 84%.Rainfall
In December, the rain falls for 5.2 days. Throughout December, 0.75" (19mm) of precipitation is accumulated. Throughout the year, there are 122.8 rainfall days, and 15.51" (394mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Waunakee, during December, snow falls for 10 days and regularly aggregates up to 1.42" (36mm) of snow. In Waunakee, during the entire year, snow falls for 47.9 days and aggregates up to 10.55" (268mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 0min of daylight.On the first day of the month, sunrise is at 7:10 am and sunset at 4:23 pm. On the last day of December, sunrise is at 7:29 am and sunset at 4:32 pm CST.
Sunshine
In Waunakee, the average sunshine in December is 3.9h.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 health risk from exposure to the Sun's UV rays for the average person.Note: In December, the maximum UV index of 1 suggests these recommendations:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Always opt for UVA and UVB-resistant sunglasses on radiant days. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
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 many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Waunakee have in December?
When are sunrise and sunset in December?
How many hours of sunshine does Waunakee have in December?
What are the months with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Waunakee, WI
- Average high temperature in December: 29.8°F
The warmest month (with the highest average high temperature) is July (78.6°F).
The month with the lowest average high temperature is January (23.2°F).
- Average low temperature in December: 19.6°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (10.9°F).
Average pressure in December
Waunakee, WI
- Average pressure in December: 30.09"Hg
The months with the highest atmospheric pressure are January and February (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Waunakee, WI
- Average wind speed in December: 9.4mph
The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in December
Waunakee, WI
- Average humidity in December: 84%
The month with the highest relative humidity is January (89%).
The months with the lowest relative humidity are April and October (77%).
Average rainfall in December
Waunakee, WI
- Average rainfall in December: 0.75"
The wettest month (with the highest rainfall) is June (2.28").
The driest month (with the least rainfall) is January (0.51").
Average rainfall days in December
Waunakee, WI
- Average rainfall days in December: 5.2 days
The month with the highest number of rainy days is June (17 days).
The months with the least rainy days are January and February (3.8 days).
Average snowfall in December
Waunakee, WI
- Average snowfall in December: 1.42"
The month with the highest snowfall is February (2.56").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Waunakee, WI
- Average snowfall days in December: 10 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 daylight in December /
Average sunshine in December
Waunakee, WI
- Average daylight in December: 9h and 0min
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 0min).
- Average sunshine in December: 3h and 5min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average sunshine days in December
Waunakee, WI
- Average sunshine days in December: 18.2 days
The months with the most sunshine days are October and November (18.5 days).
The month with the least sunshine days is June (9.8 days).
Average UV index in December
Waunakee, 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
Waunakee, WI
- Average cloud cover in December: 62
The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in December
Waunakee, WI
- Average visibility in December: 6mi
The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).
Waunakee, Wisconsin, USA
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