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
A modest decline in the average high-temperature is seen during December, decreasing from a comfortable 61.7°F (16.5°C) in November to a fresh 53.4°F (11.9°C). Throughout December, Sumner records an average temperature of 41°F (5°C) at night.Humidity
The months with the highest humidity are February, March and December, with an average relative humidity of 78%.Rainfall
In Sumner, in December, it is raining for 12.3 days, with typically 4.25" (108mm) of accumulated precipitation. In Sumner, during the entire year, the rain falls for 161.1 days and collects up to 42.24" (1073mm) of precipitation.Snowfall
January through March, November and December are months with snowfall. In Sumner, in December, during 0.3 snowfall days, 0.04" (1mm) of snow is typically accumulated. Throughout the year, there are 3.3 snowfall days, and 1.38" (35mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 54min of daylight.On the first day of December in Sumner, sunrise is at 6:49 am and sunset at 4:52 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 5:02 pm CST.
Sunshine
In Sumner, the average sunshine in December is 4.9h.UV index
January, February and December, with an average maximum UV index of 3, are months with the lowest UV index in Sumner. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: During December, 3 as the daily maximum UV index converts into the following advice:
Take necessary precautions - Protection from skin and eye injury is mandatory. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Frequently asked questions
What are the temperatures in Sumner in December?
What are the most humid months in Sumner?
What is the average humidity in December in Sumner?
How much does it rain in Sumner in December?
How many days does it snow in December in Sumner?
What is the month with the shortest days in Sumner?
What is the average length of the day in December in Sumner?
When are sunrise and sunset in December in Sumner?
How many hours of sunshine does Sumner have in December?
When is the lowest UV index in Sumner?
What is the UV index intensity in December in Sumner?
Average temperature in December
Sumner, 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
Sumner, 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
Sumner, 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
Sumner, 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
Sumner, 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
Sumner, 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
Sumner, 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
Sumner, 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
Sumner, 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
Sumner, 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
Sumner, 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
Sumner, 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
Sumner, 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).
Sumner, Mississippi, USA
Weather forecast for your location
2. Allow the app to use your location
