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's onset is marked by a clear temperature decrease, falling from a cold 41.2°F (5.1°C) in November to a freezing cold 25.9°F (-3.4°C). Black Horse records a mean low-temperature of 14.4°F (-9.8°C) in December.Humidity
In Black Horse, the average relative humidity in December is 82%.Rainfall
In Black Horse, South Dakota, 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
January through May, October through December are months with snowfall. In Black Horse, in December, during 12.5 snowfall days, 2.52" (64mm) of snow is typically accumulated. In Black Horse, during the entire year, snow falls for 65.8 days and aggregates up to 21.42" (544mm) of snow.Daylight
With an average of 8h and 48min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:06 am and sunset at 4:02 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 4:11 pm MST.
Sunshine
The average sunshine in December is 4.8h.UV index
The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: The maximum UV index of 1 during December translates into these guidelines:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. Minimize direct exposure to the Sun during midday when its radiation is at its peak. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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 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 Black Horse have in December?
When are sunrise and sunset in December in Black Horse?
How many hours of sunshine does Black Horse have in December?
What is the month with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Black Horse, 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
Black Horse, 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
Black Horse, 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
Black Horse, 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
Black Horse, 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
Black Horse, 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
Black Horse, 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
Black Horse, 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
Black Horse, SD
- Average daylight in December: 8h and 5min
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 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
Black Horse, 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
Black Horse, 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
Black Horse, 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
Black Horse, 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).
Black Horse, South Dakota, USA
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