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
Observing a mild shift, the average high-temperature during December reduces from November's enjoyable 61.2°F (16.2°C) to a fresh 50.9°F (10.5°C). Olney records an average low-temperature of 36.5°F (2.5°C) throughout the month of December.Humidity
In Olney, the average relative humidity in December is 72%.Rainfall
The months with the least rainfall are January, February and December Rain falls for 9.2 days and accumulates 1.93" (49mm) of rain.Snowfall
January through March, November and December are months with snowfall. In December, it is snowing for 0.5 days. Throughout December, 0.63" (16mm) of snow is accumulated. Throughout the year, there are 3.7 snowfall days, and 2.87" (73mm) 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 7:14 am and sunset at 5:15 pm. On the last day of December, sunrise is at 7:31 am and sunset at 5:25 pm CST.
Sunshine
December has the least sunshine of the year, with an average of 5.6h of sunshine.UV index
December is the month with the lowest UV index in Olney, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for the average person.Note: A maximum daily UV index of 2 during December morphs into the following directions:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in December?
What is the average humidity in December in Olney?
What is the driest month?
How many days does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
What is the month with the least sunshine?
How long on average sun shines in December?
What is the month with the lowest UV index in Olney?
How high is the UV index in December?
Average temperature in December
Olney, OK
- Average high temperature in December: 50.9°F
The warmest month (with the highest average high temperature) is August (93.6°F).
The month with the lowest average high temperature is January (49.6°F).
- Average low temperature in December: 36.5°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 (34.2°F).
Average pressure in December
Olney, 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
Olney, OK
- Average wind speed in December: 8.7mph
The windiest month (with the highest average wind speed) is March (10.1mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).
Average humidity in December
Olney, OK
- Average humidity in December: 72%
The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is August (64%).
Average rainfall in December
Olney, OK
- Average rainfall in December: 1.93"
The wettest month (with the highest rainfall) is May (4.88").
The driest months (with the least rainfall) are January, February and December (1.93").
Average rainfall days in December
Olney, OK
- Average rainfall days in December: 9.2 days
The month with the highest number of rainy days is May (15.4 days).
The month with the least rainy days is January (7.8 days).
Average snowfall in December
Olney, OK
- Average snowfall in December: 0.63"
The month with the highest snowfall is February (1.38").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Olney, OK
- Average snowfall days in December: 0.5 days
The month with the highest number of snowfall days is February (2 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
Olney, 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: 5h and 4min
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 36min).
Average sunshine days in December
Olney, OK
- Average sunshine days in December: 19.6 days
The month with the most sunshine days is January (21.1 days).
The month with the least sunshine days is April (13.9 days).
Average UV index in December
Olney, 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
Olney, OK
- Average cloud cover in December: 37
The months with the most cloud cover are February and March (Cloud cover 42).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in December
Olney, 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).
Olney, Oklahoma, USA
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