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
Boulder Junction's progression into December includes a drop in the average high-temperature, from a cold 36°F (2.2°C) in November to a freezing cold 24.1°F (-4.4°C). Boulder Junction consistently logs a low temperature averaging a still subzero cold 15.1°F (-9.4°C) during December, a modest drop from daytime temperatures.Humidity
The average relative humidity in December in Boulder Junction is 90%.Rainfall
In Boulder Junction, in December, during 5.3 rainfall days, 1.77" (45mm) of precipitation is typically accumulated. In Boulder Junction, Wisconsin, during the entire year, the rain falls for 128.5 days and collects up to 24.76" (629mm) of precipitation.Snowfall
Months with snowfall in Boulder Junction are January through May, October through December. December is the month with the most snowfall in Boulder Junction, Wisconsin. Snow falls for 23.8 days and accumulates 11.18" (284mm) of snow.Daylight
The month with the shortest days is December, with an average of 8h and 42min of daylight.On the first day of December, sunrise is at 7:21 am and sunset at 4:14 pm. On the last day of the month, sunrise is at 7:40 am and sunset at 4:23 pm CST.
Sunshine
In Boulder Junction, the average sunshine in December is 2.2h.UV index
The months with the lowest UV index are January, March, November and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low health risk from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum daily UV index of 1 in December converts into the following recommendations:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Boulder Junction in December?
What is the average humidity in December in Boulder Junction?
How much does it rain in Boulder Junction in December?
What is the snowiest month in Boulder Junction?
How many days does it snow in December in Boulder Junction?
What is the month with the shortest days in Boulder Junction?
How many hours of daylight does Boulder Junction have in December?
When is the sunrise / sunset in December in Boulder Junction?
How long on average sun shines in December in Boulder Junction?
What are the months with the lowest UV index in Boulder Junction?
How high is the UV index in December in Boulder Junction?
Average temperature in December
Boulder Junction, WI
- Average high temperature in December: 24.1°F
The warmest month (with the highest average high temperature) is July (77°F).
The month with the lowest average high temperature is January (18.5°F).
- Average low temperature in December: 15.1°F
The month with the highest average low temperature is July (56.3°F).
The coldest month (with the lowest average low temperature) is January (7.9°F).
Average pressure in December
Boulder Junction, WI
- Average pressure in December: 30.06"Hg
The months with the highest atmospheric pressure are February and March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed in December
Boulder Junction, WI
- Average wind speed in December: 8.3mph
The windiest month (with the highest average wind speed) is November (8.7mph).
The calmest month (with the lowest average wind speed) is August (6.8mph).
Average humidity in December
Boulder Junction, WI
- Average humidity in December: 90%
The months with the highest relative humidity are January and February (92%).
The month with the lowest relative humidity is May (71%).
Average rainfall in December
Boulder Junction, WI
- Average rainfall in December: 1.77"
The wettest month (with the highest rainfall) is May (2.95").
The driest month (with the least rainfall) is January (1.38").
Average rainfall days in December
Boulder Junction, WI
- Average rainfall days in December: 5.3 days
The month with the highest number of rainy days is June (15.8 days).
The month with the least rainy days is February (2.7 days).
Average snowfall in December
Boulder Junction, WI
- Average snowfall in December: 11.18"
The month with the highest snowfall is December (11.18").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Boulder Junction, WI
- Average snowfall days in December: 23.8 days
The month with the highest number of snowfall days is January (26.7 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Boulder Junction, WI
- Average daylight in December: 8h and 4min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in December: 2h and 1min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 1h and 54min).
Average sunshine days in December
Boulder Junction, WI
- Average sunshine days in December: 6.5 days
The month with the most sunshine days is September (13.4 days).
The month with the least sunshine days is January (5 days).
Average UV index in December
Boulder Junction, WI
- 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, March, November and December (UV index 1).
Average cloud cover in December
Boulder Junction, WI
- Average cloud cover in December: 79
The month with the most cloud cover is January (Cloud cover 83).
The month with the least cloud cover is July (Cloud cover 37).
Average visibility in December
Boulder Junction, WI
- Average visibility in December: 4mi
The months with the highest visibility are May, June and July (6mi).
The months with the lowest visibility are January, February, March and December (4mi).
Boulder Junction, Wisconsin, USA
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