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
December
Weather in December
Temperature
December is the coldest month of the year in Deadwood, South Dakota, registering average temperatures as high as 29.7°F (-1.3°C) and as low as 16.7°F (-8.5°C).Humidity
In December, the average relative humidity is 77%.Rainfall
In December, in Deadwood, the rain falls for 4.2 days. Throughout December, 0.67" (17mm) of precipitation is accumulated. Throughout the year, there are 96.1 rainfall days, and 14.02" (356mm) of precipitation is accumulated.Snowfall
Months with snowfall in Deadwood are January through June, September through December. In Deadwood, South Dakota, in December, during 10.1 snowfall days, 3.78" (96mm) of snow is typically accumulated. In Deadwood, South Dakota, during the entire year, snow falls for 66.6 days and aggregates up to 34.53" (877mm) of snow.Daylight
December has the shortest days of the year, with an average of 8h and 54min of daylight.On the first day of December in Deadwood, sunrise is at 7:11 am and sunset at 4:16 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 4:25 pm MST.
Sunshine
In December, the average sunshine is 6h.UV index
January through March, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Deadwood. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum high UV index of 2 in December translates into the following recommendations:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the coldest in Deadwood?
How cold is it in Deadwood in December?
What is the average humidity in December in Deadwood?
How many days does it rain in December in Deadwood?
How many days does it snow in December in Deadwood?
What is the month with the shortest days in Deadwood?
How many hours of daylight does Deadwood have in December?
What time are sunrise and sunset in December in Deadwood?
How long on average sun shines in December in Deadwood?
When is the lowest UV index in Deadwood?
What is the UV index reading in December in Deadwood?
Average temperature in December
Deadwood, SD
- Average high temperature in December: 29.7°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is December (29.7°F).
- Average low temperature in December: 16.7°F
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is February (15.4°F).
Average pressure in December
Deadwood, 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
Deadwood, SD
- Average wind speed in December: 9.5mph
The windiest month (with the highest average wind speed) is October (9.9mph).
The calmest month (with the lowest average wind speed) is August (7.6mph).
Average humidity in December
Deadwood, SD
- Average humidity in December: 77%
The months with the highest relative humidity are January and February (79%).
The months with the lowest relative humidity are August and September (51%).
Average rainfall in December
Deadwood, SD
- Average rainfall in December: 0.67"
The wettest month (with the highest rainfall) is May (1.93").
The driest month (with the least rainfall) is January (0.55").
Average rainfall days in December
Deadwood, SD
- Average rainfall days in December: 4.2 days
The month with the highest number of rainy days is June (14.2 days).
The month with the least rainy days is November (2.7 days).
Average snowfall in December
Deadwood, SD
- Average snowfall in December: 3.78"
The month with the highest snowfall is April (6.54").
The months with the least snowfall are July and August (0").
Average snowfall days in December
Deadwood, SD
- Average snowfall days in December: 10.1 days
The month with the highest number of snowfall days is January (11.7 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Deadwood, SD
- Average daylight in December: 8h and 5min
The month with the longest days is June (Average daylight: 15h and 30min).
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 42min).
The month with the least sunshine is February (Average sunshine: 5h and 54min).
Average sunshine days in December
Deadwood, SD
- Average sunshine days in December: 19.5 days
The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is June (12.3 days).
Average UV index in December
Deadwood, SD
- Average UV index in December: 2
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in December
Deadwood, SD
- Average cloud cover in December: 37
The months with the most cloud cover are February and April (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in December
Deadwood, SD
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
