December weather forecastBelle Fourche, SD
December
Weather in December
With December, winter gets in full swing in Belle Fourche as it becomes one of the coldest months. The landscape turns into a winter wonderland with increased snowfall and freezing temperatures. Comparatively colder than November, the temperatures drop down to an average low of 18.1°F (-7.7°C). Snowfall increases as well, adorning the city in a sparkling white canvas. The shorter days and cold winter nights typify December, bringing the year to a festive yet chilly close.Temperature
During the coldest month in Belle Fourche, December, temperatures average a high of 30.4°F (-0.9°C) and a low of 18.1°F (-7.7°C).Humidity
The average relative humidity in December is 78%.Rainfall
In December, in Belle Fourche, the rain falls for 3.5 days. Throughout December, 0.59" (15mm) of precipitation is accumulated. In Belle Fourche, South Dakota, during the entire year, the rain falls for 100 days and collects up to 12.83" (326mm) of precipitation.Snowfall
January through May, September through December are months with snowfall. In Belle Fourche, South Dakota, in December, snow falls for 9.4 days, with typically accumulated 2.95" (75mm) of snow. In Belle Fourche, South Dakota, during the entire year, snow falls for 52.1 days and aggregates up to 23.54" (598mm) of snow.Daylight
December has the shortest days of the year in Belle Fourche, with an average of 8h and 54min of daylight.On the first day of the month, sunrise is at 7:13 am and sunset at 4:16 pm. On the last day of December, in Belle Fourche, sunrise is at 7:32 am and sunset at 4:25 pm MST.
Sunshine
The average sunshine in December is 5.8h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for average individuals.Note: In December, the average maximum UV index of 2 translates into the following recommendations:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Belle Fourche, SD
- Average high temperature in December: 30.4°F
The warmest month (with the highest average high temperature) is July (85.8°F).
The month with the lowest average high temperature is December (30.4°F).
- Average low temperature in December: 18.1°F
The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is February (17.1°F).
Average pressure in December
Belle Fourche, SD
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in December
Belle Fourche, SD
- Average wind speed in December: 10.1mph
The windiest months (with the highest average wind speed) are January and October (10.4mph).
The calmest month (with the lowest average wind speed) is August (8.3mph).
Average humidity in December
Belle Fourche, SD
- Average humidity in December: 78%
The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is August (47%).
Average rainfall in December
Belle Fourche, SD
- Average rainfall in December: 0.59"
The wettest month (with the highest rainfall) is May (2.05").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in December
Belle Fourche, SD
- Average rainfall days in December: 3.5 days
The month with the highest number of rainy days is May (14.3 days).
The month with the least rainy days is January (2.8 days).
Average snowfall in December
Belle Fourche, SD
- Average snowfall in December: 2.95"
The month with the highest snowfall is April (4.88").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Belle Fourche, SD
- Average snowfall days in December: 9.4 days
The month with the highest number of snowfall days is February (10.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Belle Fourche, SD
- Average daylight in December: 8h and 54min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in December: 5h and 48min
The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 30min).
Average sunshine days in December
Belle Fourche, SD
- Average sunshine days in December: 19.5 days
The month with the most sunshine days is November (21.3 days).
The month with the least sunshine days is April (12.6 days).
Average UV index in December
Belle Fourche, SD
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Belle Fourche, SD
- Average cloud cover in December: 40
The month with the most cloud cover is February (Cloud cover 42).
The month with the least cloud cover is August (Cloud cover 15).
Average visibility in December
Belle Fourche, 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).
