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
Grayson's December weather comes with a decrease in average high-temperatures, moving from a moderate 59.7°F (15.4°C) in November to a frosty 49.3°F (9.6°C). An average low-temperature of 34.9°F (1.6°C) marks the nights throughout December.Humidity
In Grayson, the average relative humidity in December is 70%.Rainfall
In Grayson, in December, it is raining for 7.6 days, with typically 1.61" (41mm) of accumulated precipitation. In Grayson, during the entire year, the rain falls for 136.7 days and collects up to 30.67" (779mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. In Grayson, in December, snow falls for 1.4 days, with typically accumulated 0.59" (15mm) of snow. In Grayson, during the entire year, snow falls for 6.1 days and aggregates up to 3.7" (94mm) of snow.Daylight
The month with the shortest days in Grayson is December, with an average of 9h and 48min of daylight.On the first day of December in Grayson, sunrise is at 7:14 am and sunset at 5:10 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 5:21 pm CST.
Sunshine
December has the least sunshine of the year in Grayson, with an average of 5.6h of sunshine.UV index
December is the month with the lowest UV index in Grayson, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for average individuals.Note: The daily high UV index of 2 in December translates into this advice:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Boost your sun resistance with garments that are densely woven yet spacious. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Frequently asked questions
What are the temperatures in Grayson in December?
What is the average humidity in December in Grayson?
How much does it rain in Grayson in December?
How many days does it snow in December in Grayson?
What is the month with the shortest days in Grayson?
How many hours of daylight does Grayson have in December?
When is the sunrise / sunset in December in Grayson?
What is the month with the least sunshine in Grayson?
How many hours of sunshine does Grayson have in December?
What is the month with the lowest UV index in Grayson?
How high is the UV index in December in Grayson?
Average temperature in December
Grayson, OK
- Average high temperature in December: 49.3°F
The warmest month (with the highest average high temperature) is August (91.6°F).
The month with the lowest average high temperature is January (47.7°F).
- Average low temperature in December: 34.9°F
The month with the highest average low temperature is July (72.1°F).
The coldest month (with the lowest average low temperature) is January (31.6°F).
Average pressure in December
Grayson, 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 (29.9"Hg).
Average wind speed in December
Grayson, OK
- Average wind speed in December: 9.2mph
The windiest month (with the highest average wind speed) is March (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in December
Grayson, 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 (66%).
Average rainfall in December
Grayson, OK
- Average rainfall in December: 1.61"
The wettest month (with the highest rainfall) is May (5").
The driest month (with the least rainfall) is February (1.46").
Average rainfall days in December
Grayson, OK
- Average rainfall days in December: 7.6 days
The month with the highest number of rainy days is May (15.5 days).
The month with the least rainy days is January (6.4 days).
Average snowfall in December
Grayson, OK
- Average snowfall in December: 0.59"
The month with the highest snowfall is February (1.73").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Grayson, OK
- Average snowfall days in December: 1.4 days
The month with the highest number of snowfall days is February (2.2 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
Grayson, OK
- Average daylight in December: 9h and 5min
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 48min).
- Average sunshine in December: 5h and 4min
The month with the most sunshine is August (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).
Average sunshine days in December
Grayson, OK
- Average sunshine days in December: 20.9 days
The month with the most sunshine days is January (21.9 days).
The month with the least sunshine days is May (13.1 days).
Average UV index in December
Grayson, 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
Grayson, OK
- Average cloud cover in December: 37
The month with the most cloud cover is March (Cloud cover 42).
The month with the least cloud cover is August (Cloud cover 20).
Average visibility in December
Grayson, 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).
Grayson, Oklahoma, USA
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