December weather forecastBlackwell, OK
December
Weather in December
The first month of the winter, December, is also a frosty month in Blackwell, Oklahoma, with temperature in the range of an average high of 46.6°F (8.1°C) and an average low of 30.7°F (-0.7°C).Temperature
Blackwell observes a minor decrease in the average high-temperature with the arrival of December, falling from November's refreshing 57.7°F (14.3°C) to a frosty 46.6°F (8.1°C). The average low-temperature during December nights is a freezing cold 30.7°F (-0.7°C).Humidity
In December, the average relative humidity is 68%.Rainfall
The month with the least rainfall is December, when the rain falls for 4.7 days and typically collects 0.59" (15mm) of precipitation.Snowfall
January through March, October through December are months with snowfall. In Blackwell, during December, snow falls for 1.4 days and regularly aggregates up to 0.31" (8mm) of snow. Throughout the year, there are 7.6 snowfall days, and 2.6" (66mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 42min of daylight.On the first day of December, sunrise is at 7:23 am and sunset at 5:13 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 5:23 pm CST.
Sunshine
The months with the least sunshine are January and December, with an average of 6.2h of 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 of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: An average UV index of 2 in December transforms into this advice:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Blackwell, OK
- Average high temperature in December: 46.6°F
The warmest month (with the highest average high temperature) is July (93.7°F).
The month with the lowest average high temperature is January (45.5°F).
- Average low temperature in December: 30.7°F
The month with the highest average low temperature is July (73°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).
Average pressure in December
Blackwell, 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 (29.87"Hg).
Average wind speed in December
Blackwell, OK
- Average wind speed in December: 9.8mph
The windiest month (with the highest average wind speed) is April (11.4mph).
The calmest month (with the lowest average wind speed) is August (8.3mph).
Average humidity in December
Blackwell, OK
- Average humidity in December: 68%
The month with the highest relative humidity is May (74%).
The month with the lowest relative humidity is July (61%).
Average rainfall in December
Blackwell, OK
- Average rainfall in December: 0.59"
The wettest month (with the highest rainfall) is May (4.09").
The driest month (with the least rainfall) is December (0.59").
Average rainfall days in December
Blackwell, OK
- Average rainfall days in December: 4.7 days
The month with the highest number of rainy days is May (15 days).
The month with the least rainy days is January (4.5 days).
Average snowfall in December
Blackwell, OK
- Average snowfall in December: 0.31"
The month with the highest snowfall is February (0.91").
The months with the least snowfall are April, May, June, July, August and September (0").
Average snowfall days in December
Blackwell, OK
- Average snowfall days in December: 1.4 days
The month with the highest number of snowfall days is February (2.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Blackwell, OK
- Average daylight in December: 9h and 42min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in December: 6h and 12min
The month with the most sunshine is August (Average sunshine: 11h and 18min).
The months with the least sunshine are January and December (Average sunshine: 6h and 12min).
Average sunshine days in December
Blackwell, OK
- Average sunshine days in December: 23.7 days
The month with the most sunshine days is January (24 days).
The month with the least sunshine days is May (13.7 days).
Average UV index in December
Blackwell, OK
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in December
Blackwell, OK
- Average cloud cover in December: 30
The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is August (Cloud cover 19).
Average visibility in December
Blackwell, 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).
