December weather forecastOkreek, SD
December
Weather in December
The first month of the winter, December, is still a freezing cold month in Okreek, South Dakota, with an average temperature varying between 31.1°F (-0.5°C) and 18.3°F (-7.6°C).Temperature
As Okreek transitions into December, a marked decrease in the average high-temperature is observed, dropping from a chilly 46.6°F (8.1°C) in November to a freezing cold 31.1°F (-0.5°C). An average low-temperature of 18.3°F (-7.6°C) is recorded in the month of December.Humidity
The average relative humidity in December is 79%.Rainfall
In Okreek, during December, the rain falls for 3.5 days and regularly aggregates up to 0.79" (20mm) of precipitation. In Okreek, South Dakota, 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. December is the month with the most snowfall. Snow falls for 8 days and accumulates 3.19" (81mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 0min of daylight.On the first day of the month, sunrise is at 7:54 am and sunset at 5:06 pm. On the last day of December, sunrise is at 8:13 am and sunset at 5:15 pm CST.
Sunshine
The average sunshine in December is 5.2h.UV index
December is the month with the lowest UV index, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index of 1 in December interprets into the following recommendations:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Okreek, 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
Okreek, 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
Okreek, 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
Okreek, 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
Okreek, 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
Okreek, 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
Okreek, 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
Okreek, 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
Okreek, 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 12min
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
Okreek, 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
Okreek, 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
Okreek, 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
Okreek, 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).
