December weather forecastSorum, SD
December
Weather in December
The first month of the winter, December, is still a freezing cold month in Sorum, South Dakota, with an average temperature fluctuating between 16°F (-8.9°C) and 27.9°F (-2.3°C).Temperature
Sorum in December experiences a subtle temperature decline, with average high-temperatures reducing from an icy 42.1°F (5.6°C) in November to a freezing cold 27.9°F (-2.3°C). During December, the average low-temperature is a still subzero cold 16°F (-8.9°C).Humidity
The average relative humidity in December is 79%.Rainfall
In Sorum, in December, during 3.8 rainfall days, 0.59" (15mm) of precipitation is typically accumulated. Throughout the year, in Sorum, there are 103.8 rainfall days, and 14.88" (378mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Sorum, in December, during 10.9 snowfall days, 2.76" (70mm) of snow is typically accumulated. Throughout the year, there are 62.2 snowfall days, and 22.95" (583mm) of snow is accumulated.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 7:12 am and sunset at 4:10 pm. On the last day of the month, sunrise is at 7:31 am and sunset at 4:18 pm MST.
Sunshine
In Sorum, the average sunshine in December is 5.2h.UV index
The months with the lowest UV index are February and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A daily maximum UV index of 1 in December translates into the following instructions:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Sorum, SD
- Average high temperature in December: 27.9°F
The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is January (27.3°F).
- Average low temperature in December: 16°F
The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (14.4°F).
Average pressure in December
Sorum, SD
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in December
Sorum, SD
- Average wind speed in December: 11.2mph
The windiest months (with the highest average wind speed) are January and October (11.9mph).
The calmest month (with the lowest average wind speed) is July (9.8mph).
Average humidity in December
Sorum, SD
- Average humidity in December: 79%
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is August (47%).
Average rainfall in December
Sorum, SD
- Average rainfall in December: 0.59"
The wettest month (with the highest rainfall) is May (2.68").
The driest months (with the least rainfall) are January and November (0.51").
Average rainfall days in December
Sorum, SD
- Average rainfall days in December: 3.8 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (3.3 days).
Average snowfall in December
Sorum, SD
- Average snowfall in December: 2.76"
The month with the highest snowfall is March (4.37").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Sorum, SD
- Average snowfall days in December: 10.9 days
The month with the highest number of snowfall days is February (12.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Sorum, SD
- Average daylight in December: 8h and 48min
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: 5h and 12min
The month with the most sunshine is August (Average sunshine: 11h and 30min).
The months with the least sunshine are January and February (Average sunshine: 5h and 0min).
Average sunshine days in December
Sorum, SD
- Average sunshine days in December: 17.7 days
The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is April (11.6 days).
Average UV index in December
Sorum, SD
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are February and December (UV index 1).
Average cloud cover in December
Sorum, SD
- Average cloud cover in December: 47
The months with the most cloud cover are January and February (Cloud cover 48).
The month with the least cloud cover is August (Cloud cover 18).
Average visibility in December
Sorum, 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).
