December weather forecastAllen, OK
December
Weather in December
December, the first month of the winter in Allen, is still a chilly month, with an average temperature varying between 49.6°F (9.8°C) and 35.6°F (2°C).Temperature
The onset of December brings a small change in high-temperatures, falling from a refreshing 60.1°F (15.6°C) in November to a frosty 49.6°F (9.8°C). Allen's nighttime temperature during December is consistently averaged at a cold 35.6°F (2°C).Humidity
The average relative humidity in December is 70%.Rainfall
In Allen, in December, during 7.7 rainfall days, 1.57" (40mm) of precipitation is typically accumulated. In Allen, during the entire year, the rain falls for 131 days and collects up to 28.39" (721mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. In Allen, in December, during 1 snowfall days, 0.31" (8mm) of snow is typically accumulated. In Allen, during the entire year, snow falls for 5.7 days and aggregates up to 3.15" (80mm) of snow.Daylight
With an average of 9h and 54min of daylight, December has the shortest days of the year.On the first day of December in Allen, sunrise is at 7:15 am and sunset at 5:14 pm. On the last day of the month, sunrise is at 7:33 am and sunset at 5:24 pm CST.
Sunshine
December has the least sunshine of the year, with an average of 5.7h of sunshine.UV index
December is the month with the lowest UV index, 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: In December, the maximum UV index of 2 translates into these guidelines:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Allen, OK
- Average high temperature in December: 49.6°F
The warmest month (with the highest average high temperature) is August (92.1°F).
The month with the lowest average high temperature is January (48.7°F).
- Average low temperature in December: 35.6°F
The month with the highest average low temperature is July (72.3°F).
The coldest month (with the lowest average low temperature) is January (33.3°F).
Average pressure in December
Allen, 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 (29.89"Hg).
Average wind speed in December
Allen, OK
- Average wind speed in December: 9.6mph
The windiest month (with the highest average wind speed) is March (11mph).
The calmest month (with the lowest average wind speed) is July (7.3mph).
Average humidity in December
Allen, OK
- Average humidity in December: 70%
The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is August (64%).
Average rainfall in December
Allen, OK
- Average rainfall in December: 1.57"
The wettest month (with the highest rainfall) is May (4.33").
The driest month (with the least rainfall) is February (1.42").
Average rainfall days in December
Allen, OK
- Average rainfall days in December: 7.7 days
The month with the highest number of rainy days is May (15.1 days).
The month with the least rainy days is January (6.7 days).
Average snowfall in December
Allen, OK
- Average snowfall in December: 0.31"
The month with the highest snowfall is February (1.54").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Allen, OK
- Average snowfall days in December: 1 days
The month with the highest number of snowfall days is February (2.1 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
Allen, OK
- Average daylight in December: 9h and 54min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 54min).
- Average sunshine in December: 5h and 42min
The month with the most sunshine is August (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in December
Allen, OK
- Average sunshine days in December: 20.9 days
The month with the most sunshine days is January (22.5 days).
The month with the least sunshine days is May (14.5 days).
Average UV index in December
Allen, 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
Allen, OK
- Average cloud cover in December: 35
The months with the most cloud cover are February and March (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 20).
Average visibility in December
Allen, 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).
