December weather forecastGrigsby, KY
December
Weather in December
The first month of the winter, December, is also a frosty month in Grigsby, Kentucky, with an average temperature varying between 45.1°F (7.3°C) and 33.1°F (0.6°C).Temperature
The start of December comes with a small reduction in the average high-temperature, subtly receding from a cool 54°F (12.2°C) in November to a chilly 45.1°F (7.3°C). During December nights, Grigsby witnesses a consistent average temperature of 33.1°F (0.6°C).Humidity
The months with the highest humidity in Grigsby are February and December, with an average relative humidity of 80%.Rainfall
In Grigsby, in December, it is raining for 11.7 days, with typically 2.36" (60mm) of accumulated precipitation. Throughout the year, there are 168.8 rainfall days, and 24.84" (631mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall in Grigsby. In Grigsby, in December, during 6.1 snowfall days, 2.95" (75mm) of snow is typically accumulated. Throughout the year, in Grigsby, there are 33.3 snowfall days, and 11.34" (288mm) of snow is accumulated.Daylight
With an average of 9h and 36min of daylight, December has the shortest days of the year in Grigsby.On the first day of December, sunrise is at 7:28 am and sunset at 5:15 pm. On the last day of the month, sunrise is at 7:46 am and sunset at 5:25 pm EST.
Sunshine
In December, the average sunshine 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 value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for the average person.Note: The maximum daily UV index of 2 in December converts into the following recommendations:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. The Sun is at its harshest during midday; protect yourself by staying in shaded areas and minimizing exposure. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Grigsby, KY
- Average high temperature in December: 45.1°F
The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is January (40.6°F).
- Average low temperature in December: 33.1°F
The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (27°F).
Average pressure in December
Grigsby, 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 (29.98"Hg).
Average wind speed in December
Grigsby, KY
- Average wind speed in December: 6mph
The windiest month (with the highest average wind speed) is April (6.7mph).
The calmest month (with the lowest average wind speed) is August (4mph).
Average humidity in December
Grigsby, 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 November (75%).
Average rainfall in December
Grigsby, KY
- Average rainfall in December: 2.36"
The wettest month (with the highest rainfall) is February (2.76").
The driest month (with the least rainfall) is September (1.46").
Average rainfall days in December
Grigsby, KY
- Average rainfall days in December: 11.7 days
The month with the highest number of rainy days is May (18.6 days).
The month with the least rainy days is November (10.5 days).
Average snowfall in December
Grigsby, KY
- Average snowfall in December: 2.95"
The month with the highest snowfall is February (3.15").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Grigsby, KY
- Average snowfall days in December: 6.1 days
The month with the highest number of snowfall days is January (10.3 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
Grigsby, 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 months with the most sunshine are June, July and August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in December
Grigsby, KY
- Average sunshine days in December: 14 days
The month with the most sunshine days is November (17.3 days).
The month with the least sunshine days is May (9.7 days).
Average UV index in December
Grigsby, KY
- Average UV index in December: 2
The months with the highest UV index are May, June 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
Grigsby, KY
- Average cloud cover in December: 53
The month with the most cloud cover is February (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in December
Grigsby, KY
- Average visibility in December: 5mi
The months with the highest visibility are April, October and November (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September and December (5mi).
