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
New Castle's December weather features a mild decline in high-temperatures, reducing from a cool 52.9°F (11.6°C) in November to a frosty 43.7°F (6.5°C). In the month of December, an average of 31.3°F (-0.4°C) marks the low-temperature.Humidity
The months with the highest humidity are February and December, with an average relative humidity of 81%.Rainfall
In New Castle, during December, the rain falls for 10.9 days and regularly aggregates up to 1.81" (46mm) of precipitation. Throughout the year, there are 147.9 rainfall days, and 23.98" (609mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. In New Castle, during December, snow falls for 5.5 days and regularly aggregates up to 1.1" (28mm) of snow. In New Castle, Kentucky, during the entire year, snow falls for 25.8 days and aggregates up to 6.02" (153mm) of snow.Daylight
With an average of 9h and 30min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:39 am and sunset at 5:20 pm. On the last day of the month, sunrise is at 7:57 am and sunset at 5:30 pm EST.
Sunshine
In December, the average sunshine is 4.3h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for the average person.Note: A daily maximum UV index of 2 in December translates into the following instructions:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the most humid month?
What is the average humidity in December?
How many days does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When is the sunrise / sunset in December?
How many hours of sunshine does New Castle have in December?
What is the month with the lowest UV index?
How high is the UV index in December?
Average temperature in December
New Castle, KY
- Average high temperature in December: 43.7°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (38.3°F).
- Average low temperature in December: 31.3°F
The month with the highest average low temperature is July (66.4°F).
The coldest month (with the lowest average low temperature) is January (25.3°F).
Average pressure in December
New Castle, KY
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in December
New Castle, KY
- Average wind speed in December: 7.8mph
The windiest month (with the highest average wind speed) is January (8.4mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).
Average humidity in December
New Castle, KY
- Average humidity in December: 81%
The months with the highest relative humidity are February and December (81%).
The months with the lowest relative humidity are August, September and October (75%).
Average rainfall in December
New Castle, KY
- Average rainfall in December: 1.81"
The wettest month (with the highest rainfall) is April (2.64").
The driest month (with the least rainfall) is September (1.3").
Average rainfall days in December
New Castle, KY
- Average rainfall days in December: 10.9 days
The month with the highest number of rainy days is May (17.2 days).
The month with the least rainy days is January (7.8 days).
Average snowfall in December
New Castle, KY
- Average snowfall in December: 1.1"
The month with the highest snowfall is March (1.54").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
New Castle, KY
- Average snowfall days in December: 5.5 days
The month with the highest number of snowfall days is January (7.2 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
New Castle, KY
- Average daylight in December: 9h and 3min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 4h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days in December
New Castle, KY
- Average sunshine days in December: 15.9 days
The month with the most sunshine days is October (19.9 days).
The month with the least sunshine days is May (11.9 days).
Average UV index in December
New Castle, KY
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
New Castle, KY
- Average cloud cover in December: 56
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in December
New Castle, KY
- Average visibility in December: 6mi
The months with the highest visibility are March, April, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, May and July (5mi).
New Castle, Kentucky, USA
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