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
In South Park, the month of December registers the lowest temperatures, averaging 21.9°F (-5.6°C) at the peak and 5.2°F (-14.9°C) at the lowest.Humidity
The average relative humidity in December is 92%.Rainfall
In December, the rain falls for 4.2 days. Throughout December, 2.91" (74mm) of precipitation is accumulated. In South Park, during the entire year, the rain falls for 103 days and collects up to 29.84" (758mm) of precipitation.Snowfall
January through December are months with snowfall. In South Park, in December, during 23.7 snowfall days, 24.72" (628mm) of snow is typically accumulated. Throughout the year, there are 173.6 snowfall days, and 181.26" (4604mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 0min of daylight.On the first day of December in South Park, sunrise is at 7:36 am and sunset at 4:48 pm. On the last day of the month, sunrise is at 7:55 am and sunset at 4:57 pm MST.
Sunshine
The average sunshine in December is 3.6h.UV index
January through April, October through December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 1 during December translates into the following directions:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What month is the coldest?
How cold is December?
What is the average humidity in December?
How much does it rain in December?
How much does it snow in South Park in December?
What is the month with the shortest days in South Park?
How many hours of daylight does South Park have in December?
What time are sunrise and sunset in December?
How many hours of sunshine does South Park have in December?
What are the months with the lowest UV index?
How high is the UV index in December?
Average temperature in December
South Park, WY
- Average high temperature in December: 21.9°F
The warmest month (with the highest average high temperature) is July (73.4°F).
The month with the lowest average high temperature is December (21.9°F).
- Average low temperature in December: 5.2°F
The month with the highest average low temperature is July (43.5°F).
The coldest month (with the lowest average low temperature) is January (4.8°F).
Average pressure in December
South Park, WY
- Average pressure in December: 30.25"Hg
The month with the highest atmospheric pressure is January (30.27"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
South Park, WY
- Average wind speed in December: 4.3mph
The windiest month (with the highest average wind speed) is June (5.7mph).
The calmest month (with the lowest average wind speed) is December (4.3mph).
Average humidity in December
South Park, WY
- Average humidity in December: 92%
The month with the highest relative humidity is February (94%).
The month with the lowest relative humidity is August (50%).
Average rainfall in December
South Park, WY
- Average rainfall in December: 2.91"
The wettest month (with the highest rainfall) is February (3.54").
The driest month (with the least rainfall) is August (1.34").
Average rainfall days in December
South Park, WY
- Average rainfall days in December: 4.2 days
The month with the highest number of rainy days is May (15.4 days).
The month with the least rainy days is January (2.9 days).
Average snowfall in December
South Park, WY
- Average snowfall in December: 24.72"
The month with the highest snowfall is February (29.33").
The month with the least snowfall is August (0.12").
Average snowfall days in December
South Park, WY
- Average snowfall days in December: 23.7 days
The month with the highest number of snowfall days is March (24.8 days).
The month with the least snowfall days is July (0.4 days).
Average daylight in December /
Average sunshine in December
South Park, WY
- 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: 3h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 36min).
The month with the least sunshine is February (Average sunshine: 3h and 24min).
Average sunshine days in December
South Park, WY
- Average sunshine days in December: 8 days
The month with the most sunshine days is July (15.6 days).
The month with the least sunshine days is April (3.8 days).
Average UV index in December
South Park, WY
- Average UV index in December: 1
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 1).
Average cloud cover in December
South Park, WY
- Average cloud cover in December: 66
The month with the most cloud cover is February (Cloud cover 72).
The months with the least cloud cover are July and August (Cloud cover 16).
Average visibility in December
South Park, WY
- Average visibility in December: 3mi
The months with the highest visibility are June, July, August and September (6mi).
The months with the lowest visibility are January, February, March and December (3mi).
South Park, Wyoming, USA
Weather forecast for your location
2. Allow the app to use your location