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 into December brings a noticeable decrease in the average high-temperature, falling from a chilly 43.7°F (6.5°C) in November to a subzero cold 27.3°F (-2.6°C). Throughout December, Cavour records an average temperature of 14.7°F (-9.6°C) at night.Humidity
In Cavour, South Dakota, the average relative humidity in December is 84%.Rainfall
In Cavour, in December, it is raining for 3 days, with typically 0.79" (20mm) of accumulated precipitation. Throughout the year, there are 101.8 rainfall days, and 18.19" (462mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall. In December, it is snowing for 9.5 days. Throughout December, 2.95" (75mm) of snow is accumulated. In Cavour, during the entire year, snow falls for 42.3 days and aggregates up to 16.54" (420mm) of snow.Daylight
The month with the shortest days in Cavour is December, with an average of 8h and 54min of daylight.On the first day of the month, sunrise is at 7:48 am and sunset at 4:54 pm. On the last day of December, sunrise is at 8:08 am and sunset at 5:02 pm CST.
Sunshine
In Cavour, the average sunshine in December is 4.5h.UV index
The average daily maximum UV index in December in Cavour is 2. A UV Index of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum daily UV index of 2 during December morphs into the following directions:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Cavour?
What is the average humidity in December in Cavour?
How many days does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Cavour have in December?
What time are sunrise and sunset in December in Cavour?
How many hours of sunshine does Cavour have in December?
How high is the UV index in December?
Average temperature in December
Cavour, SD
- Average high temperature in December: 27.3°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (23.2°F).
- Average low temperature in December: 14.7°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (8.2°F).
Average pressure in December
Cavour, 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 (29.84"Hg).
Average wind speed in December
Cavour, SD
- Average wind speed in December: 9.9mph
The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest months (with the lowest average wind speed) are July and August (8.6mph).
Average humidity in December
Cavour, SD
- Average humidity in December: 84%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is September (62%).
Average rainfall in December
Cavour, 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 (0.55").
Average rainfall days in December
Cavour, SD
- Average rainfall days in December: 3 days
The month with the highest number of rainy days is June (15.2 days).
The month with the least rainy days is February (1.8 days).
Average snowfall in December
Cavour, SD
- Average snowfall in December: 2.95"
The month with the highest snowfall is February (3.54").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Cavour, SD
- Average snowfall days in December: 9.5 days
The month with the highest number of snowfall days is December (9.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Cavour, SD
- Average daylight in December: 8h and 5min
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: 4h and 3min
The month with the most sunshine is July (Average sunshine: 11h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in December
Cavour, SD
- Average sunshine days in December: 20.9 days
The month with the most sunshine days is November (21.8 days).
The month with the least sunshine days is June (12.3 days).
Average UV index in December
Cavour, 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 and November (UV index 1).
Average cloud cover in December
Cavour, SD
- Average cloud cover in December: 50
The month with the most cloud cover is January (Cloud cover 54).
The month with the least cloud cover is July (Cloud cover 22).
Average visibility in December
Cavour, 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).
Cavour, South Dakota, USA
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