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 Duncan, the coldest period comes during January and December, when the average high-temperature touches 51.3°F (10.7°C).Humidity
In December, the average relative humidity is 66%.Rainfall
In December, in Duncan, the rain falls for 6 days. Throughout December, 1.14" (29mm) of precipitation is accumulated. Throughout the year, there are 113.4 rainfall days, and 24.61" (625mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall. In Duncan, during December, snow falls for 1 days and regularly aggregates up to 0.51" (13mm) of snow. Throughout the year, there are 5.1 snowfall days, and 3.03" (77mm) of snow is accumulated.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 7:20 am and sunset at 5:21 pm. On the last day of December, in Duncan, sunrise is at 7:38 am and sunset at 5:31 pm CST.
Sunshine
The month with the least sunshine in Duncan is December, with an average of 6h of sunshine.UV index
December is the month with the lowest UV index in Duncan, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: In December, the average maximum UV index of 2 translates into the following recommendations:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Frequently asked questions
What is the coldest month in Duncan?
What is the usual temperature for Duncan in December?
What is the average humidity in December in Duncan?
How much does it rain in Duncan in December?
How many days does it snow in December in Duncan?
What is the month with the shortest days in Duncan?
How many hours of daylight does Duncan have in December?
When is the sunrise / sunset in December in Duncan?
What is the month with the least sunshine in Duncan?
How many hours of sunshine does Duncan have in December?
When is the lowest UV index in Duncan?
What is the UV index reading in December in Duncan?
Average temperature in December
Duncan, OK
- Average high temperature in December: 51.3°F
The warmest month (with the highest average high temperature) is August (95°F).
The months with the lowest average high temperature are January and December (51.3°F).
- Average low temperature in December: 35.8°F
The month with the highest average low temperature is July (73.9°F).
The coldest month (with the lowest average low temperature) is January (33.6°F).
Average pressure in December
Duncan, OK
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in December
Duncan, OK
- Average wind speed in December: 9.7mph
The windiest month (with the highest average wind speed) is April (11.6mph).
The calmest months (with the lowest average wind speed) are July, August and September (8.3mph).
Average humidity in December
Duncan, OK
- Average humidity in December: 66%
The month with the highest relative humidity is May (73%).
The month with the lowest relative humidity is August (55%).
Average rainfall in December
Duncan, OK
- Average rainfall in December: 1.14"
The wettest month (with the highest rainfall) is May (4.37").
The driest month (with the least rainfall) is February (1.02").
Average rainfall days in December
Duncan, OK
- Average rainfall days in December: 6 days
The month with the highest number of rainy days is May (13.5 days).
The month with the least rainy days is January (5 days).
Average snowfall in December
Duncan, OK
- Average snowfall in December: 0.51"
The month with the highest snowfall is February (1.3").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Duncan, OK
- Average snowfall days in December: 1 days
The month with the highest number of snowfall days is February (1.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Duncan, OK
- 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: 6h and 0min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).
Average sunshine days in December
Duncan, OK
- Average sunshine days in December: 23.2 days
The month with the most sunshine days is January (24.3 days).
The month with the least sunshine days is May (15.7 days).
Average UV index in December
Duncan, OK
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover in December
Duncan, OK
- Average cloud cover in December: 33
The month with the most cloud cover is March (Cloud cover 36).
The month with the least cloud cover is August (Cloud cover 20).
Average visibility in December
Duncan, OK
- 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, Oklahoma, USA
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