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
Start of December brings a shift in the average high-temperature, falling from November's refreshing 57.4°F (14.1°C) to a frosty 46.4°F (8°C). Throughout December, the temperature tends to fall to a consistent average low of 32.2°F (0.1°C).Humidity
In December, the average relative humidity is 69%.Rainfall
The month with the least rainfall is December, when the rain falls for 4.3 days and typically collects 0.43" (11mm) of precipitation.Snowfall
January through March, November and December are months with snowfall. In Copan, in December, snow falls for 1.3 days, with typically accumulated 0.31" (8mm) of snow. In Copan, during the entire year, snow falls for 5.6 days and aggregates up to 0.87" (22mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 42min of daylight.On the first day of the month, sunrise is at 7:18 am and sunset at 5:07 pm. On the last day of December, sunrise is at 7:36 am and sunset at 5:17 pm CST.
Sunshine
January and December, with an average of 5.8h of sunshine, are months with the least sunshine.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum UV index of 2 during December leads to these instructions:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in December?
What is the average humidity in December?
What is the driest month?
How many days does it rain in December?
How many days does it snow in December in Copan?
What is the month with the shortest days?
How many hours of daylight does Copan have in December?
When are sunrise and sunset in December?
What is the month with the least sunshine in Copan?
How long on average sun shines in December?
What is the month with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Copan, OK
- Average high temperature in December: 46.4°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 (44.4°F).
- Average low temperature in December: 32.2°F
The month with the highest average low temperature is July (71.1°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).
Average pressure in December
Copan, 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
Copan, OK
- Average wind speed in December: 9.4mph
The windiest month (with the highest average wind speed) is March (11mph).
The calmest months (with the lowest average wind speed) are July and August (7.3mph).
Average humidity in December
Copan, OK
- Average humidity in December: 69%
The month with the highest relative humidity is May (80%).
The months with the lowest relative humidity are January, October and November (68%).
Average rainfall in December
Copan, OK
- Average rainfall in December: 0.43"
The wettest month (with the highest rainfall) is May (3.15").
The driest month (with the least rainfall) is December (0.43").
Average rainfall days in December
Copan, OK
- Average rainfall days in December: 4.3 days
The month with the highest number of rainy days is May (13.8 days).
The month with the least rainy days is January (3.9 days).
Average snowfall in December
Copan, OK
- Average snowfall in December: 0.31"
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
Copan, OK
- Average snowfall days in December: 1.3 days
The month with the highest number of snowfall days is February (2.3 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
Copan, OK
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in December: 5h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The months with the least sunshine are January and December (Average sunshine: 5h and 48min).
Average sunshine days in December
Copan, OK
- Average sunshine days in December: 25 days
The month with the most sunshine days is January (25.7 days).
The month with the least sunshine days is May (15 days).
Average UV index in December
Copan, OK
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in December
Copan, OK
- Average cloud cover in December: 34
The month with the most cloud cover is March (Cloud cover 40).
The months with the least cloud cover are July and August (Cloud cover 23).
Average visibility in December
Copan, 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).
Copan, Oklahoma, USA
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