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
The shift from November to December brings a noticeable decrease in the average high-temperature, dropping from a chilly 46.6°F (8.1°C) to a freezing cold 31.1°F (-0.5°C). White River's average low-temperature is measured at a still subzero cold 18.3°F (-7.6°C) during December.Humidity
The average relative humidity in December is 79%.Rainfall
In White River, in December, during 3.5 rainfall days, 0.79" (20mm) of precipitation is typically accumulated. In White River, during the entire year, the rain falls for 103.9 days and collects up to 16.85" (428mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. The month with the most snowfall is December, when snow falls for 8 days and typically aggregates up to 3.19" (81mm) of snow.Daylight
December has the shortest days of the year in White River, with an average of 9h and 0min of daylight.On the first day of the month, sunrise is at 7:57 am and sunset at 5:07 pm. On the last day of December, sunrise is at 8:16 am and sunset at 5:16 pm CST.
Sunshine
In White River, South Dakota, the average sunshine in December is 5.2h.UV index
December is the month with the lowest UV index in White River, South Dakota, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum daily UV index of 1 during December morphs into the following directions:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Frequently asked questions
How cold is December in White River?
What is the average humidity in December in White River?
How much does it rain in White River in December?
What is the snowiest month in White River?
How many days does it snow in December in White River?
What is the month with the shortest days in White River?
How many hours of daylight does White River have in December?
What time are sunrise and sunset in December in White River?
How long on average sun shines in December in White River?
What is the month with the lowest UV index in White River?
What is the UV index intensity in December in White River?
Average temperature in December
White River, SD
- Average high temperature in December: 31.1°F
The warmest month (with the highest average high temperature) is July (88°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in December: 18.3°F
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (15.6°F).
Average pressure in December
White River, SD
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in December
White River, SD
- Average wind speed in December: 10.9mph
The windiest month (with the highest average wind speed) is April (11.9mph).
The calmest month (with the lowest average wind speed) is August (9.8mph).
Average humidity in December
White River, SD
- Average humidity in December: 79%
The month with the highest relative humidity is January (82%).
The months with the lowest relative humidity are August and September (57%).
Average rainfall in December
White River, SD
- Average rainfall in December: 0.79"
The wettest month (with the highest rainfall) is June (2.8").
The driest month (with the least rainfall) is January (0.47").
Average rainfall days in December
White River, SD
- Average rainfall days in December: 3.5 days
The month with the highest number of rainy days is June (15.3 days).
The months with the least rainy days are January and February (2.7 days).
Average snowfall in December
White River, SD
- Average snowfall in December: 3.19"
The month with the highest snowfall is December (3.19").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
White River, SD
- Average snowfall days in December: 8 days
The month with the highest number of snowfall days is January (9.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
White River, 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 1min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 54min).
Average sunshine days in December
White River, SD
- Average sunshine days in December: 20.2 days
The month with the most sunshine days is November (20.8 days).
The month with the least sunshine days is June (11.2 days).
Average UV index in December
White River, 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
White River, SD
- Average cloud cover in December: 44
The month with the most cloud cover is January (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 20).
Average visibility in December
White River, 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).
White River, South Dakota, USA
Weather forecast for your location
2. Allow the app to use your location
