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 advent of December brings a subtle shift in temperature, with the average high moving from a fresh 52.9°F (11.6°C) in November to a frosty 44.6°F (7°C). In Grassy Creek, the average temperature during the nights of December drops to a wintry 32.7°F (0.4°C).Humidity
In Grassy Creek, the average relative humidity in December is 80%.Rainfall
In Grassy Creek, in December, it is raining for 12 days, with typically 2.76" (70mm) of accumulated precipitation. In Grassy Creek, during the entire year, the rain falls for 162.2 days and collects up to 29.45" (748mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. In Grassy Creek, in December, during 7.3 snowfall days, 2.32" (59mm) of snow is typically accumulated. In Grassy Creek, Kentucky, during the entire year, snow falls for 36.4 days and aggregates up to 12.48" (317mm) 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 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 December, the average sunshine in Grassy Creek is 4.1h.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 reading of 2, and below, represents a low health risk from exposure to the Sun's UV rays for average individuals.Note: The average daily UV index of 2 in December transforms into the following instructions:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold does it get in Grassy Creek in December?
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?
How many hours of daylight does Grassy Creek have in December?
When is the sunrise / sunset in December?
How many hours of sunshine does Grassy Creek have in December?
What are the months with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Grassy Creek, 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
Grassy Creek, 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
Grassy Creek, 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
Grassy Creek, 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
Grassy Creek, 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
Grassy Creek, 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
Grassy Creek, 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
Grassy Creek, 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
Grassy Creek, 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
Grassy Creek, 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
Grassy Creek, 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
Grassy Creek, 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
Grassy Creek, 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).
Grassy Creek, Kentucky, USA
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