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 chilly 46.4°F (8°C) in November to a subzero cold 30.7°F (-0.7°C). An average nighttime temperature of 18°F (-7.8°C) is noted during the month of December.Humidity
In December, the average relative humidity is 79%.Rainfall
In Wall, in December, during 2.7 rainfall days, 0.71" (18mm) of precipitation is typically accumulated. In Wall, during the entire year, the rain falls for 95.3 days and collects up to 13.74" (349mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Wall, during December, snow falls for 6.9 days and regularly aggregates up to 2.95" (75mm) of snow. In Wall, during the entire year, snow falls for 38.8 days and aggregates up to 16.1" (409mm) of snow.Daylight
December has the shortest days of the year in Wall, South Dakota, with an average of 9h and 0min of daylight.On the first day of December in Wall, sunrise is at 7:04 am and sunset at 4:12 pm. On the last day of the month, sunrise is at 7:23 am and sunset at 4:21 pm MST.
Sunshine
In December, the average sunshine is 5.3h.UV index
December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: The daily high UV index of 1 in December translates into this advice:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Frequently asked questions
How cold is it in Wall in December?
What is the average humidity in December in Wall?
How many days does it rain in December in Wall?
How many days does it snow in December in Wall?
What is the month with the shortest days in Wall?
How many hours of daylight does Wall have in December?
When is the sunrise / sunset in December in Wall?
How many hours of sunshine does Wall have in December?
What is the month with the lowest UV index in Wall?
What is the UV index reading in December in Wall?
Average temperature in December
Wall, SD
- Average high temperature in December: 30.7°F
The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is January (29.8°F).
- Average low temperature in December: 18°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).
Average pressure in December
Wall, SD
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in December
Wall, SD
- Average wind speed in December: 10.3mph
The windiest month (with the highest average wind speed) is April (12.1mph).
The calmest month (with the lowest average wind speed) is February (10.1mph).
Average humidity in December
Wall, SD
- Average humidity in December: 79%
The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is September (47%).
Average rainfall in December
Wall, SD
- Average rainfall in December: 0.71"
The wettest month (with the highest rainfall) is May (2.09").
The driest month (with the least rainfall) is January (0.39").
Average rainfall days in December
Wall, SD
- Average rainfall days in December: 2.7 days
The month with the highest number of rainy days is May (13.5 days).
The month with the least rainy days is February (2.6 days).
Average snowfall in December
Wall, SD
- Average snowfall in December: 2.95"
The month with the highest snowfall is February (3.15").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Wall, SD
- Average snowfall days in December: 6.9 days
The month with the highest number of snowfall days is February (8.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Wall, SD
- Average daylight in December: 9h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in December: 5h and 2min
The month with the most sunshine is August (Average sunshine: 11h and 42min).
The months with the least sunshine are January and February (Average sunshine: 5h and 12min).
Average sunshine days in December
Wall, SD
- Average sunshine days in December: 21.1 days
The month with the most sunshine days is December (21.1 days).
The months with the least sunshine days are April and June (14.1 days).
Average UV index in December
Wall, SD
- Average UV index in December: 1
The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Wall, SD
- Average cloud cover in December: 44
The month with the most cloud cover is January (Cloud cover 46).
The months with the least cloud cover are July and August (Cloud cover 18).
Average visibility in December
Wall, 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).
Wall, South Dakota, USA
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