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 start of December signals a gentle decrease in the average high-temperature, transitioning from a refreshing 61.7°F (16.5°C) in November to a fresh 53.4°F (11.9°C). Throughout the month of December, Swan Lake witnesses an average temperature of 41°F (5°C).Humidity
February, March and December, with an average relative humidity of 78%, are the most humid months.Rainfall
In Swan Lake, Mississippi, in December, it is raining for 12.3 days, with typically 4.25" (108mm) of accumulated precipitation. In Swan Lake, during the entire year, the rain falls for 161.1 days and collects up to 42.24" (1073mm) of precipitation.Snowfall
Months with snowfall are January through March, November and December. In Swan Lake, in December, during 0.3 snowfall days, 0.04" (1mm) of snow is typically accumulated. In Swan Lake, during the entire year, snow falls for 3.3 days and aggregates up to 1.38" (35mm) of snow.Daylight
With an average of 9h and 54min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 6:48 am and sunset at 4:52 pm. On the last day of December, sunrise is at 7:06 am and sunset at 5:02 pm CST.
Sunshine
In December, the average sunshine is 4.9h.UV index
January, February and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: The UV index of 3 during December leads to these advisories:
Undertake precautions - It is suggested to shield oneself from sunburn. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are December temperatures?
What is the most humid month?
What is the average humidity in December?
How many days does it rain in December?
How much does it snow in Swan Lake in December?
What is the month with the shortest days?
How many hours of daylight does Swan Lake have in December?
When is the sunrise / sunset in December?
How many hours of sunshine does Swan Lake have in December?
What is the month with the lowest UV index in Swan Lake?
How high is the UV index in December in Swan Lake?
Average temperature in December
Swan Lake, MS
- Average high temperature in December: 53.4°F
The warmest month (with the highest average high temperature) is July (90°F).
The month with the lowest average high temperature is January (50.2°F).
- Average low temperature in December: 41°F
The month with the highest average low temperature is July (73.4°F).
The coldest month (with the lowest average low temperature) is January (36.9°F).
Average pressure in December
Swan Lake, MS
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in December
Swan Lake, MS
- Average wind speed in December: 8.6mph
The windiest month (with the highest average wind speed) is February (9.5mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in December
Swan Lake, MS
- Average humidity in December: 78%
The months with the highest relative humidity are February, March and December (78%).
The month with the lowest relative humidity is October (67%).
Average rainfall in December
Swan Lake, MS
- Average rainfall in December: 4.25"
The wettest month (with the highest rainfall) is April (4.72").
The driest month (with the least rainfall) is September (1.97").
Average rainfall days in December
Swan Lake, MS
- Average rainfall days in December: 12.3 days
The months with the highest number of rainy days are July and August (17.6 days).
The month with the least rainy days is October (9.3 days).
Average snowfall in December
Swan Lake, MS
- Average snowfall in December: 0.04"
The month with the highest snowfall is February (0.91").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Swan Lake, MS
- Average snowfall days in December: 0.3 days
The month with the highest number of snowfall days is February (1.3 days).
The months with the least snowfall days are April, May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Swan Lake, MS
- Average daylight in December: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in December: 4h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).
Average sunshine days in December
Swan Lake, MS
- Average sunshine days in December: 16.4 days
The month with the most sunshine days is October (20.2 days).
The month with the least sunshine days is August (11.1 days).
Average UV index in December
Swan Lake, MS
- Average UV index in December: 3
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, February and December (UV index 3).
Average cloud cover in December
Swan Lake, MS
- Average cloud cover in December: 46
The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is June (Cloud cover 26).
Average visibility in December
Swan Lake, MS
- 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).
Swan Lake, Mississippi, USA
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