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 is marked by a minor reduction in average high-temperature, sliding from a cool 52.9°F (11.6°C) in November to a chilly 44.6°F (7°C). Throughout December, the average low-temperature in Index records at a wintry 32.7°F (0.4°C).Humidity
In December, the average relative humidity in Index, Kentucky, is 80%.Rainfall
In Index, during December, the rain falls for 12 days and regularly aggregates up to 2.76" (70mm) of precipitation. Throughout the year, there are 162.2 rainfall days, and 29.45" (748mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall. In Index, during December, snow falls for 7.3 days and regularly aggregates up to 2.32" (59mm) of snow. In Index, Kentucky, during the entire year, snow falls for 36.4 days and aggregates up to 12.48" (317mm) of snow.Daylight
With an average of 9h and 36min of daylight, December has the shortest days of the year.On the first day of December in Index, sunrise is at 7:30 am and sunset at 5:14 pm. On the last day of the month, sunrise is at 7:48 am and sunset at 5:24 pm EST.
Sunshine
In Index, the average sunshine in December is 4.1h.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: A maximum high daily UV index of 2 during December translates into the following directions:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Frequently asked questions
How cold is December in Index?
What is the average humidity in December in Index?
How much does it rain in Index in December?
How much does it snow in Index in December?
What is the month with the shortest days in Index?
How many hours of daylight does Index have in December?
When are sunrise and sunset in December in Index?
How long on average sun shines in December in Index?
What is the month with the lowest UV index in Index?
What is the UV index reading in December in Index?
Average temperature in December
Index, KY
- Average high temperature in December: 44.6°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: 32.7°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).
Average pressure in December
Index, KY
- Average pressure in December: 30.14"Hg
The months with the highest atmospheric pressure are January and November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).
Average wind speed in December
Index, KY
- Average wind speed in December: 6.8mph
The windiest month (with the highest average wind speed) is January (7.4mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).
Average humidity in December
Index, KY
- Average humidity in December: 80%
The month with the highest relative humidity is February (81%).
The months with the lowest relative humidity are June, August and November (75%).
Average rainfall in December
Index, KY
- Average rainfall in December: 2.76"
The wettest month (with the highest rainfall) is February (2.99").
The driest months (with the least rainfall) are September and November (1.89").
Average rainfall days in December
Index, KY
- Average rainfall days in December: 12 days
The months with the highest number of rainy days are May and July (17.3 days).
The month with the least rainy days is November (9.7 days).
Average snowfall in December
Index, KY
- Average snowfall in December: 2.32"
The month with the highest snowfall is February (3.23").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Index, KY
- Average snowfall days in December: 7.3 days
The month with the highest number of snowfall days is January (10.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Index, 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 1min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in December
Index, KY
- Average sunshine days in December: 13.5 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is February (10.3 days).
Average UV index in December
Index, 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
Index, KY
- Average cloud cover in December: 58
The months with the most cloud cover are January and February (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in December
Index, KY
- Average visibility in December: 5mi
The months with the highest visibility are March, April, October and November (6mi).
The months with the lowest visibility are January, February, May, June, July, August, September and December (5mi).
Index, Kentucky, USA
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