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
With the onset of December, Bison experiences a distinct temperature drop, with the average high-temperature reducing from November's cold 41.2°F (5.1°C) to a freezing cold 25.9°F (-3.4°C). During the month of December, the temperature in Bison, South Dakota, generally drops to a low average of 14.4°F (-9.8°C).Humidity
In December, the average relative humidity in Bison is 82%.Rainfall
In Bison, during December, the rain falls for 3.7 days and regularly aggregates up to 0.55" (14mm) of precipitation. Throughout the year, there are 101.3 rainfall days, and 14.25" (362mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Bison, in December, during 12.5 snowfall days, 2.52" (64mm) of snow is typically accumulated. In Bison, South Dakota, during the entire year, snow falls for 65.8 days and aggregates up to 21.42" (544mm) of snow.Daylight
December has the shortest days of the year in Bison, South Dakota, with an average of 8h and 48min of daylight.On the first day of December in Bison, sunrise is at 7:10 am and sunset at 4:07 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 4:16 pm MST.
Sunshine
In December, the average sunshine is 4.8h.UV index
With an average maximum UV index of 1, December is the month with the lowest UV index. A UV Index reading of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for the average person.Note: A daily maximum UV index of 1 in December translates into the following instructions:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Bison in December?
What is the average humidity in December in Bison?
How much does it rain in Bison in December?
How many days does it snow in December in Bison?
What is the month with the shortest days in Bison?
How many hours of daylight does Bison have in December?
When are sunrise and sunset in December in Bison?
How long on average sun shines in December in Bison?
What is the month with the lowest UV index in Bison?
How high is the UV index in December in Bison?
Average temperature in December
Bison, SD
- Average high temperature in December: 25.9°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (25.2°F).
- Average low temperature in December: 14.4°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (11.7°F).
Average pressure in December
Bison, SD
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in December
Bison, SD
- Average wind speed in December: 10.9mph
The windiest month (with the highest average wind speed) is April (11.7mph).
The calmest month (with the lowest average wind speed) is August (9.6mph).
Average humidity in December
Bison, SD
- Average humidity in December: 82%
The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are August and September (51%).
Average rainfall in December
Bison, SD
- Average rainfall in December: 0.55"
The wettest month (with the highest rainfall) is June (2.28").
The driest month (with the least rainfall) is January (0.47").
Average rainfall days in December
Bison, SD
- Average rainfall days in December: 3.7 days
The month with the highest number of rainy days is June (15.1 days).
The month with the least rainy days is January (2.9 days).
Average snowfall in December
Bison, SD
- Average snowfall in December: 2.52"
The month with the highest snowfall is February (4.53").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Bison, SD
- Average snowfall days in December: 12.5 days
The month with the highest number of snowfall days is February (12.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Bison, SD
- 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: 4h and 5min
The month with the most sunshine is August (Average sunshine: 11h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in December
Bison, SD
- Average sunshine days in December: 16.9 days
The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is June (11.7 days).
Average UV index in December
Bison, SD
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Bison, SD
- Average cloud cover in December: 51
The months with the most cloud cover are January and February (Cloud cover 52).
The months with the least cloud cover are July and August (Cloud cover 20).
Average visibility in December
Bison, 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).
Bison, South Dakota, USA
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