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
Temperature readings reach their annual highs in December, averaging 32.5°F (0.3°C) and a minimum average of 18.7°F (-7.4°C).Humidity
The average relative humidity in December is 74%.Rainfall
In December, the rain falls for 4.8 days. Throughout December, 0.63" (16mm) of precipitation is accumulated. In Box Elder, during the entire year, the rain falls for 118.8 days and collects up to 15.39" (391mm) of precipitation.Snowfall
January through May, September through December are months with snowfall. In Box Elder, in December, snow falls for 8.1 days, with typically accumulated 2.64" (67mm) of snow. Throughout the year, there are 50.4 snowfall days, and 24.41" (620mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 8h and 54min of daylight.On the first day of the month, sunrise is at 7:08 am and sunset at 4:15 pm. On the last day of December, sunrise is at 7:27 am and sunset at 4:24 pm MST.
Sunshine
The average sunshine in December is 6h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV rays for the ordinary person.Note: In December, a daily maximum UV index of 2 leads to the following instructions:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. Around midday, solar radiation is most harmful; hence, exposure should be limited. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest month?
How cold is December?
What is the average humidity in December?
How much does it rain in Box Elder in December?
How many days does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When is the sunrise / sunset in December?
How many hours of sunshine does Box Elder have in December?
What is the month with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Box Elder, SD
- Average high temperature in December: 32.5°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is December (32.5°F).
- Average low temperature in December: 18.7°F
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is February (17.8°F).
Average pressure in December
Box Elder, SD
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in December
Box Elder, SD
- Average wind speed in December: 8.9mph
The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is August (8.2mph).
Average humidity in December
Box Elder, SD
- Average humidity in December: 74%
The month with the highest relative humidity is January (77%).
The months with the lowest relative humidity are August and September (50%).
Average rainfall in December
Box Elder, SD
- Average rainfall in December: 0.63"
The wettest month (with the highest rainfall) is May (2.28").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in December
Box Elder, SD
- Average rainfall days in December: 4.8 days
The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is December (4.8 days).
Average snowfall in December
Box Elder, SD
- Average snowfall in December: 2.64"
The month with the highest snowfall is April (5.43").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Box Elder, SD
- Average snowfall days in December: 8.1 days
The month with the highest number of snowfall days is February (10.5 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Box Elder, SD
- Average daylight in December: 8h and 5min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in December: 6h and 0min
The month with the most sunshine is August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 54min).
Average sunshine days in December
Box Elder, SD
- Average sunshine days in December: 19.6 days
The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is May (11 days).
Average UV index in December
Box Elder, SD
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Box Elder, SD
- Average cloud cover in December: 36
The months with the most cloud cover are February and April (Cloud cover 38).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in December
Box Elder, SD
- 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).
Box Elder, South Dakota, USA
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