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
Glad Valley's weather in December is characterized by a distinct drop in the average high-temperature, reducing from a chilly 43.3°F (6.3°C) in November to a freezing cold 28.2°F (-2.1°C). Glad Valley, during the month of December, experiences an average low-temperature of 16.2°F (-8.8°C).Humidity
In Glad Valley, the average relative humidity in December is 80%.Rainfall
In December, in Glad Valley, the rain falls for 4 days. Throughout December, 0.83" (21mm) of precipitation is accumulated. Throughout the year, there are 99.7 rainfall days, and 16.06" (408mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Glad Valley, in December, during 10.4 snowfall days, 3.31" (84mm) of snow is typically accumulated. Throughout the year, there are 58.3 snowfall days, and 22.95" (583mm) of snow is accumulated.Daylight
December has the shortest days of the year in Glad Valley, South Dakota, with an average of 8h and 48min of daylight.On the first day of the month, sunrise is at 7:07 am and sunset at 4:05 pm. On the last day of December, sunrise is at 7:26 am and sunset at 4:14 pm MST.
Sunshine
The average sunshine in December is 5.1h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum daily UV index of 2 during December translates into the following directions:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Frequently asked questions
How cold is it in Glad Valley in December?
What is the average humidity in December in Glad Valley?
How much does it rain in Glad Valley in December?
How many days does it snow in December in Glad Valley?
What is the month with the shortest days in Glad Valley?
How many hours of daylight does Glad Valley have in December?
When are sunrise and sunset in December in Glad Valley?
How many hours of sunshine does Glad Valley have in December?
What are the months with the lowest UV index in Glad Valley?
What is the UV index intensity in December in Glad Valley?
Average temperature in December
Glad Valley, SD
- Average high temperature in December: 28.2°F
The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is January (27°F).
- Average low temperature in December: 16.2°F
The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (13.6°F).
Average pressure in December
Glad Valley, SD
- Average pressure in December: 30.14"Hg
The months with the highest atmospheric pressure are January and February (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in December
Glad Valley, SD
- Average wind speed in December: 10.9mph
The windiest month (with the highest average wind speed) is April (12.2mph).
The calmest months (with the lowest average wind speed) are February and August (10.4mph).
Average humidity in December
Glad Valley, SD
- Average humidity in December: 80%
The month with the highest relative humidity is January (83%).
The months with the lowest relative humidity are August and September (49%).
Average rainfall in December
Glad Valley, SD
- Average rainfall in December: 0.83"
The wettest month (with the highest rainfall) is May (2.83").
The driest month (with the least rainfall) is January (0.51").
Average rainfall days in December
Glad Valley, SD
- Average rainfall days in December: 4 days
The month with the highest number of rainy days is May (14.7 days).
The months with the least rainy days are January and February (3.3 days).
Average snowfall in December
Glad Valley, SD
- Average snowfall in December: 3.31"
The month with the highest snowfall is February (5.12").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Glad Valley, SD
- Average snowfall days in December: 10.4 days
The month with the highest number of snowfall days is January (12.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Glad Valley, SD
- Average daylight in December: 8h and 5min
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 1min
The month with the most sunshine is July (Average sunshine: 11h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 48min).
Average sunshine days in December
Glad Valley, SD
- Average sunshine days in December: 17.3 days
The month with the most sunshine days is September (20.4 days).
The month with the least sunshine days is April (12.4 days).
Average UV index in December
Glad Valley, SD
- Average UV index in December: 2
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Glad Valley, SD
- Average cloud cover in December: 47
The month with the most cloud cover is January (Cloud cover 50).
The months with the least cloud cover are July and August (Cloud cover 19).
Average visibility in December
Glad Valley, 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).
Glad Valley, South Dakota, USA
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