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
December brings a decrease in the average high-temperature, falling from November's cool 55.2°F (12.9°C) to a chilly 45.7°F (7.6°C). Throughout December, Olney registers a consistent average low-temperature of 34°F (1.1°C).Humidity
The average relative humidity in December is 78%.Rainfall
In December, in Olney, the rain falls for 7.5 days. Throughout December, 0.91" (23mm) of precipitation is accumulated. In Olney, during the entire year, the rain falls for 118.1 days and collects up to 12.28" (312mm) of precipitation.Snowfall
January through March, November and December are months with snowfall in Olney. In Olney, in December, during 1.7 snowfall days, 0.12" (3mm) of snow is typically accumulated. In Olney, during the entire year, snow falls for 8.7 days and aggregates up to 0.91" (23mm) of snow.Daylight
December has the shortest days of the year in Olney, Kentucky, with an average of 9h and 42min of daylight.On the first day of December, sunrise is at 6:46 am and sunset at 4:33 pm. On the last day of the month, sunrise is at 7:04 am and sunset at 4:44 pm CST.
Sunshine
The average sunshine in December is 4.8h.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the ordinary person.Note: In December, the maximum UV index of 2 suggests this advice:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.
Frequently asked questions
What are December temperatures in Olney?
What is the average humidity in December in Olney?
How much does it rain in Olney in December?
How many days does it snow in December in Olney?
What is the month with the shortest days in Olney?
What is the average length of the day in December in Olney?
What time are sunrise and sunset in December in Olney?
How many hours of sunshine does Olney have in December?
What are the months with the lowest UV index in Olney?
What is the UV index reading in December in Olney?
Average temperature in December
Olney, KY
- Average high temperature in December: 45.7°F
The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (41.2°F).
- Average low temperature in December: 34°F
The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (28°F).
Average pressure in December
Olney, KY
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in December
Olney, KY
- Average wind speed in December: 8.8mph
The windiest month (with the highest average wind speed) is February (9.4mph).
The calmest month (with the lowest average wind speed) is July (5.5mph).
Average humidity in December
Olney, KY
- Average humidity in December: 78%
The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Olney, KY
- Average rainfall in December: 0.91"
The wettest month (with the highest rainfall) is April (1.34").
The driest month (with the least rainfall) is September (0.47").
Average rainfall days in December
Olney, KY
- Average rainfall days in December: 7.5 days
The month with the highest number of rainy days is May (13.4 days).
The month with the least rainy days is January (6.9 days).
Average snowfall in December
Olney, KY
- Average snowfall in December: 0.12"
The month with the highest snowfall is February (0.31").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Olney, KY
- Average snowfall days in December: 1.7 days
The month with the highest number of snowfall days is January (2.9 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
Olney, KY
- 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: 4h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in December
Olney, KY
- Average sunshine days in December: 21.1 days
The month with the most sunshine days is October (21.7 days).
The month with the least sunshine days is May (14.1 days).
Average UV index in December
Olney, KY
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in December
Olney, KY
- Average cloud cover in December: 49
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 27).
Average visibility in December
Olney, KY
- 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, Kentucky, USA
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