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
December is the month that records the lowest temperatures, with averages ranging from a high of 28.4°F (-2°C) to a low of 13.1°F (-10.5°C).Humidity
In South Pass City, the average relative humidity in December is 74%.Rainfall
In South Pass City, in December, it is raining for 6.8 days, with typically 0.51" (13mm) of accumulated precipitation. Throughout the year, there are 92 rainfall days, and 10.2" (259mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, September through December. In December, it is snowing for 9.9 days. Throughout December, 3.58" (91mm) of snow is accumulated. In South Pass City, during the entire year, snow falls for 56.8 days and aggregates up to 40.94" (1040mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 6min of daylight.On the first day of December in South Pass City, sunrise is at 7:25 am and sunset at 4:43 pm. On the last day of the month, sunrise is at 7:44 am and sunset at 4:52 pm MST.
Sunshine
December has the least sunshine of the year in South Pass City, with an average of 6.8h of sunshine.UV index
The months with the lowest UV index are January through April, October through December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV rays for the average person.Note: In December, a regular UV index of 2 translates into these guidelines:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year in South Pass City?
How cold is December in South Pass City?
What is the average humidity in December in South Pass City?
How much does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does South Pass City have in December?
When is the lowest UV index?
What is the UV index reading in December?
Average temperature in December
South Pass City, WY
- Average high temperature in December: 28.4°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is December (28.4°F).
- Average low temperature in December: 13.1°F
The month with the highest average low temperature is July (56.8°F).
The coldest month (with the lowest average low temperature) is December (13.1°F).
Average pressure in December
South Pass City, WY
- Average pressure in December: 30.21"Hg
The month with the highest atmospheric pressure is January (30.23"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in December
South Pass City, WY
- Average wind speed in December: 7.2mph
The windiest month (with the highest average wind speed) is March (7.7mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in December
South Pass City, WY
- Average humidity in December: 74%
The month with the highest relative humidity is February (78%).
The month with the lowest relative humidity is August (34%).
Average rainfall in December
South Pass City, WY
- Average rainfall in December: 0.51"
The wettest month (with the highest rainfall) is April (1.81").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days in December
South Pass City, WY
- Average rainfall days in December: 6.8 days
The month with the highest number of rainy days is May (12.8 days).
The month with the least rainy days is November (4.8 days).
Average snowfall in December
South Pass City, WY
- Average snowfall in December: 3.58"
The month with the highest snowfall is April (8.15").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
South Pass City, WY
- Average snowfall days in December: 9.9 days
The month with the highest number of snowfall days is February (10.1 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
South Pass City, WY
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 6h and 5min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 6h and 48min).
Average sunshine days in December
South Pass City, WY
- Average sunshine days in December: 19.1 days
The month with the most sunshine days is September (22 days).
The month with the least sunshine days is April (12.3 days).
Average UV index in December
South Pass City, WY
- Average UV index in December: 2
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).
Average cloud cover in December
South Pass City, WY
- Average cloud cover in December: 25
The months with the most cloud cover are February and April (Cloud cover 28).
The months with the least cloud cover are July and August (Cloud cover 12).
Average visibility in December
South Pass City, WY
- 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).
South Pass City, Wyoming, USA
Weather forecast for your location
2. Allow the app to use your location