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
Duncan's weather in December involves a mild decrease in the average high-temperature, moving down slightly from November's enjoyable 61.7°F (16.5°C) to a cool 53.1°F (11.7°C). The low-temperature averages to a cold 40.8°F (4.9°C) during the nights of December.Humidity
The months with the highest humidity in Duncan are February, March and December, with an average relative humidity of 78%.Rainfall
In Duncan, in December, it is raining for 10.6 days, with typically 2.8" (71mm) of accumulated precipitation. Throughout the year, there are 144.9 rainfall days, and 31.22" (793mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through March, November and December. In Duncan, in December, snow falls for 0.4 days, with typically accumulated 0.04" (1mm) of snow. Throughout the year, there are 2.3 snowfall days, and 0.87" (22mm) of snow is accumulated.Daylight
December has the shortest days of the year in Duncan, with an average of 9h and 54min of daylight.On the first day of December, sunrise is at 6:50 am and sunset at 4:53 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 5:04 pm CST.
Sunshine
The average sunshine in December is 4.9h.UV index
The months with the lowest UV index are January, February and December, with an average maximum UV index of 3. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum daily UV index of 3 during December morphs into the following directions:
Take measures. Individuals with light skin might experience burns in under 30 minutes. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. 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 is the temperature in December?
What is the most humid month?
What is the average humidity in December?
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 is the sunrise / sunset in December?
How long on average sun shines in December?
What are the months with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Duncan, MS
- Average high temperature in December: 53.1°F
The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (50.2°F).
- Average low temperature in December: 40.8°F
The month with the highest average low temperature is July (73.2°F).
The coldest month (with the lowest average low temperature) is January (36.9°F).
Average pressure in December
Duncan, 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
Duncan, MS
- Average wind speed in December: 8.6mph
The windiest month (with the highest average wind speed) is February (9.6mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).
Average humidity in December
Duncan, 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
Duncan, MS
- Average rainfall in December: 2.8"
The wettest months (with the highest rainfall) are April and May (3.46").
The driest month (with the least rainfall) is September (1.42").
Average rainfall days in December
Duncan, MS
- Average rainfall days in December: 10.6 days
The month with the highest number of rainy days is July (16.1 days).
The month with the least rainy days is October (8.3 days).
Average snowfall in December
Duncan, MS
- Average snowfall in December: 0.04"
The month with the highest snowfall is February (0.35").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Duncan, MS
- Average snowfall days in December: 0.4 days
The month with the highest number of snowfall days is February (0.9 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Duncan, 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
Duncan, MS
- Average sunshine days in December: 18.1 days
The month with the most sunshine days is October (21.1 days).
The month with the least sunshine days is July (12.8 days).
Average UV index in December
Duncan, MS
- Average UV index in December: 3
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 3).
Average cloud cover in December
Duncan, 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
Duncan, 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).
Duncan, Mississippi, USA
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