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 transition from November to December brings a clear temperature drop, with average high-temperatures decreasing from an icy 42.3°F (5.7°C) to a freezing cold 26.4°F (-3.1°C). Sherman records an average low-temperature of 14.9°F (-9.5°C) throughout the month of December.Humidity
In December, the average relative humidity in Sherman is 85%.Rainfall
In December, in Sherman, South Dakota, the rain falls for 3.5 days. Throughout December, 1.02" (26mm) of precipitation is accumulated. Throughout the year, there are 116.4 rainfall days, and 21.38" (543mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Sherman, in December, during 10.3 snowfall days, 4.17" (106mm) of snow is typically accumulated. Throughout the year, in Sherman, there are 45.6 snowfall days, and 19.49" (495mm) of snow is accumulated.Daylight
December has the shortest days of the year in Sherman, with an average of 9h and 0min of daylight.On the first day of December, sunrise is at 7:40 am and sunset at 4:49 pm. On the last day of the month, sunrise is at 7:59 am and sunset at 4:58 pm CST.
Sunshine
The average sunshine in December in Sherman is 4.3h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index in Sherman. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: In December, the maximum UV index of 1 transforms into these recommendations:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
How cold is December in Sherman?
What is the average humidity in December in Sherman?
How much does it rain in Sherman in December?
How many days does it snow in December in Sherman?
What is the month with the shortest days in Sherman?
How many hours of daylight does Sherman have in December?
When is the sunrise / sunset in December in Sherman?
How long on average sun shines in December in Sherman?
When is the lowest UV index in Sherman?
What is the UV index reading in December in Sherman?
Average temperature in December
Sherman, SD
- Average high temperature in December: 26.4°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (22.3°F).
- Average low temperature in December: 14.9°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (8.2°F).
Average pressure in December
Sherman, SD
- Average pressure in December: 30.13"Hg
The months with the highest atmospheric pressure are January and February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in December
Sherman, SD
- Average wind speed in December: 10.3mph
The windiest month (with the highest average wind speed) is April (11.4mph).
The calmest month (with the lowest average wind speed) is July (8.2mph).
Average humidity in December
Sherman, SD
- Average humidity in December: 85%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is October (67%).
Average rainfall in December
Sherman, SD
- Average rainfall in December: 1.02"
The wettest month (with the highest rainfall) is June (3.27").
The driest month (with the least rainfall) is January (0.63").
Average rainfall days in December
Sherman, SD
- Average rainfall days in December: 3.5 days
The month with the highest number of rainy days is June (17.4 days).
The month with the least rainy days is February (2.8 days).
Average snowfall in December
Sherman, SD
- Average snowfall in December: 4.17"
The month with the highest snowfall is February (4.29").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Sherman, SD
- Average snowfall days in December: 10.3 days
The month with the highest number of snowfall days is December (10.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Sherman, 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: 4h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in December
Sherman, SD
- Average sunshine days in December: 18.7 days
The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is June (10.6 days).
Average UV index in December
Sherman, SD
- Average UV index in December: 1
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Sherman, SD
- Average cloud cover in December: 54
The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in December
Sherman, 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).
Sherman, South Dakota, USA
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