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
The arrival of December correlates with a minor temperature reduction, down from November's cool 53.6°F (12°C) to a chilly 44.8°F (7.1°C). Throughout the month of December, Custer expects an average low of 32.5°F (0.3°C).Humidity
The months with the highest humidity in Custer are February and December, with an average relative humidity of 80%.Rainfall
In Custer, during December, the rain falls for 9.3 days and regularly aggregates up to 1.06" (27mm) of precipitation. In Custer, during the entire year, the rain falls for 130.1 days and collects up to 14.72" (374mm) of precipitation.Snowfall
Months with snowfall are January through April, November and December. In Custer, during December, snow falls for 2.9 days and regularly aggregates up to 0.28" (7mm) of snow. In Custer, during the entire year, snow falls for 16 days and aggregates up to 2.28" (58mm) of snow.Daylight
With an average of 9h and 36min of daylight, December has the shortest days of the year in Custer, Kentucky.On the first day of the month, sunrise is at 6:42 am and sunset at 4:26 pm. On the last day of December, in Custer, Kentucky, sunrise is at 7:00 am and sunset at 4:36 pm CST.
Sunshine
In December, the average sunshine in Custer is 4.4h.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Custer. A UV Index estimate of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for the ordinary person.Note: The daily maximum UV index of 2 in December interprets into the following advice:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Frequently asked questions
What are the temperatures in Custer in December?
What is the most humid month in Custer?
What is the average humidity in December in Custer?
How much does it rain in Custer in December?
How much does it snow in Custer in December?
What is the month with the shortest days in Custer?
What is the average length of the day in December in Custer?
When is the sunrise / sunset in December in Custer?
How long on average sun shines in December in Custer?
What are the months with the lowest UV index in Custer?
How high is the UV index in December in Custer?
Average temperature in December
Custer, KY
- Average high temperature in December: 44.8°F
The warmest month (with the highest average high temperature) is July (86.9°F).
The month with the lowest average high temperature is January (39.7°F).
- Average low temperature in December: 32.5°F
The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (26.6°F).
Average pressure in December
Custer, KY
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in December
Custer, KY
- Average wind speed in December: 7.5mph
The windiest month (with the highest average wind speed) is February (8.1mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).
Average humidity in December
Custer, KY
- Average humidity in December: 80%
The months with the highest relative humidity are February and December (80%).
The month with the lowest relative humidity is October (74%).
Average rainfall in December
Custer, KY
- Average rainfall in December: 1.06"
The wettest month (with the highest rainfall) is April (1.73").
The driest month (with the least rainfall) is September (0.51").
Average rainfall days in December
Custer, KY
- Average rainfall days in December: 9.3 days
The month with the highest number of rainy days is May (15.7 days).
The month with the least rainy days is October (8.1 days).
Average snowfall in December
Custer, KY
- Average snowfall in December: 0.28"
The month with the highest snowfall is February (0.79").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Custer, KY
- Average snowfall days in December: 2.9 days
The month with the highest number of snowfall days is January (4.8 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
Custer, 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 36min).
- Average sunshine in December: 4h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 18min).
Average sunshine days in December
Custer, KY
- Average sunshine days in December: 18.7 days
The month with the most sunshine days is October (21.2 days).
The month with the least sunshine days is May (12.6 days).
Average UV index in December
Custer, 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
Custer, KY
- Average cloud cover in December: 54
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in December
Custer, KY
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, June, September, October, November and December (6mi).
The months with the lowest visibility are January, May, July and August (5mi).
Custer, Kentucky, USA
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