December weather forecastJeffrey, KY
December
Weather in December
The first month of the winter, December, is also a frosty month in Jeffrey, Kentucky, with an average temperature ranging between min 34.7°F (1.5°C) and max 47.3°F (8.5°C).Temperature
The onset of December entails a subtle temperature shift, as the average high-temperature eases from a refreshing 55.8°F (13.2°C) in November to a frosty 47.3°F (8.5°C). Throughout December, Jeffrey records an average temperature of 34.7°F (1.5°C) at night.Humidity
December is the most humid month in Jeffrey, with an average relative humidity of 80%.Rainfall
In Jeffrey, in December, during 13.8 rainfall days, 3.58" (91mm) of precipitation is typically accumulated. Throughout the year, there are 182.5 rainfall days, and 41.85" (1063mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall in Jeffrey. In Jeffrey, in December, snow falls for 4.9 days, with typically accumulated 1.38" (35mm) of snow. In Jeffrey, during the entire year, snow falls for 23.4 days and aggregates up to 8.82" (224mm) of snow.Daylight
The month with the shortest days in Jeffrey is December, with an average of 9h and 42min of daylight.On the first day of December, sunrise is at 6:37 am and sunset at 4:27 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 4:37 pm CST.
Sunshine
In December, the average sunshine is 4.5h.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for average individuals.Note: In December, a daily maximum UV index of 2 leads to the following instructions:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Jeffrey, KY
- Average high temperature in December: 47.3°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (42.1°F).
- Average low temperature in December: 34.7°F
The month with the highest average low temperature is July (66.9°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).
Average pressure in December
Jeffrey, 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 (29.96"Hg).
Average wind speed in December
Jeffrey, KY
- Average wind speed in December: 7.1mph
The windiest month (with the highest average wind speed) is February (8mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in December
Jeffrey, KY
- Average humidity in December: 80%
The month with the highest relative humidity is December (80%).
The months with the lowest relative humidity are April, October and November (76%).
Average rainfall in December
Jeffrey, KY
- Average rainfall in December: 3.58"
The wettest months (with the highest rainfall) are February and July (4.25").
The driest month (with the least rainfall) is September (2.4").
Average rainfall days in December
Jeffrey, KY
- Average rainfall days in December: 13.8 days
The month with the highest number of rainy days is July (19.4 days).
The month with the least rainy days is November (11.2 days).
Average snowfall in December
Jeffrey, KY
- Average snowfall in December: 1.38"
The month with the highest snowfall is February (2.4").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Jeffrey, KY
- Average snowfall days in December: 4.9 days
The month with the highest number of snowfall days is January (6.7 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
Jeffrey, KY
- Average daylight in December: 9h and 42min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in December: 4h and 30min
The months with the most sunshine are June and August (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 18min).
Average sunshine days in December
Jeffrey, KY
- Average sunshine days in December: 13.5 days
The month with the most sunshine days is November (16.7 days).
The month with the least sunshine days is July (9.5 days).
Average UV index in December
Jeffrey, 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
Jeffrey, KY
- Average cloud cover in December: 53
The month with the most cloud cover is February (Cloud cover 55).
The months with the least cloud cover are June and August (Cloud cover 30).
Average visibility in December
Jeffrey, KY
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, June, September, October, November and December (6mi).
The months with the lowest visibility are January, May, July and August (5mi).
