December weather forecastGrangertown, KY
December
Weather in December
December, the first month of the winter in Grangertown, is also a frosty month, with an average temperature ranging between min 33.3°F (0.7°C) and max 45.1°F (7.3°C).Temperature
December's arrival correlates with a reduction in the average high-temperature, down from a cool 54.5°F (12.5°C) in November to a frosty 45.1°F (7.3°C). December generally records an average low-temperature of 33.3°F (0.7°C).Humidity
In December, the average relative humidity is 78%.Rainfall
In Grangertown, in December, during 9.5 rainfall days, 1.57" (40mm) of precipitation is typically accumulated. In Grangertown, during the entire year, the rain falls for 136.4 days and collects up to 20" (508mm) of precipitation.Snowfall
January through April, November and December are months with snowfall. In December, it is snowing for 3.5 days. Throughout December, 0.28" (7mm) of snow is accumulated. In Grangertown, during the entire year, snow falls for 15.2 days and aggregates up to 3.03" (77mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 36min of daylight.On the first day of December, sunrise is at 6:48 am and sunset at 4:33 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 4:44 pm CST.
Sunshine
In Grangertown, Kentucky, the average sunshine in December is 4.7h.UV index
The months with the lowest UV index are January, February and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the average person.Note: An average UV index of 2 in December transforms into this advice:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Grangertown, KY
- Average high temperature in December: 45.1°F
The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is January (40.1°F).
- Average low temperature in December: 33.3°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 (27.5°F).
Average pressure in December
Grangertown, 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
Grangertown, KY
- Average wind speed in December: 9.1mph
The windiest month (with the highest average wind speed) is February (9.9mph).
The calmest month (with the lowest average wind speed) is July (5.8mph).
Average humidity in December
Grangertown, 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
Grangertown, KY
- Average rainfall in December: 1.57"
The wettest month (with the highest rainfall) is April (2.2").
The driest month (with the least rainfall) is September (0.91").
Average rainfall days in December
Grangertown, KY
- Average rainfall days in December: 9.5 days
The month with the highest number of rainy days is July (14.8 days).
The month with the least rainy days is January (8.2 days).
Average snowfall in December
Grangertown, KY
- Average snowfall in December: 0.28"
The month with the highest snowfall is January (0.79").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Grangertown, KY
- Average snowfall days in December: 3.5 days
The month with the highest number of snowfall days is January (4.4 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
Grangertown, KY
- Average daylight in December: 9h and 36min
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 42min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in December
Grangertown, KY
- Average sunshine days in December: 17.8 days
The month with the most sunshine days is October (20.7 days).
The month with the least sunshine days is July (13.1 days).
Average UV index in December
Grangertown, 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
Grangertown, KY
- Average cloud cover in December: 50
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility in December
Grangertown, 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).
