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 indicates a decrease in the average high-temperature, moving from a fresh 52.9°F (11.6°C) in November to a chilly 43.7°F (6.5°C). Throughout December, Grahn anticipates an average low-temperature of 32°F (0°C).Humidity
The average relative humidity in December in Grahn is 80%.Rainfall
The month with the most rainfall is December, when the rain falls for 12.7 days and typically aggregates up to 3.15" (80mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. In December, it is snowing for 7.2 days. Throughout December, 2.17" (55mm) of snow is accumulated. Throughout the year, there are 35.9 snowfall days, and 11.93" (303mm) of snow is accumulated.Daylight
With an average of 9h and 36min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:30 am and sunset at 5:12 pm. On the last day of December, sunrise is at 7:48 am and sunset at 5:22 pm EST.
Sunshine
In Grahn, the average sunshine in December is 4.2h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for average individuals.Note: During December, 2 as the daily maximum UV index converts into the following advice:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Experience reduced UV exposure by about half when donning a wide-brim hat. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is December cold?
What is the average humidity in December?
What is the wettest month?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
What time are sunrise and sunset in December?
How many hours of sunshine does Grahn have in December?
When is the lowest UV index?
What is the UV index intensity in December in Grahn?
Average temperature in December
Grahn, KY
- Average high temperature in December: 43.7°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 (38.7°F).
- Average low temperature in December: 32°F
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (25.5°F).
Average pressure in December
Grahn, KY
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in December
Grahn, KY
- Average wind speed in December: 6.9mph
The windiest month (with the highest average wind speed) is January (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).
Average humidity in December
Grahn, KY
- Average humidity in December: 80%
The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is August (74%).
Average rainfall in December
Grahn, KY
- Average rainfall in December: 3.15"
The wettest month (with the highest rainfall) is December (3.15").
The driest month (with the least rainfall) is September (1.97").
Average rainfall days in December
Grahn, KY
- Average rainfall days in December: 12.7 days
The month with the highest number of rainy days is May (19 days).
The month with the least rainy days is November (10.6 days).
Average snowfall in December
Grahn, KY
- Average snowfall in December: 2.17"
The month with the highest snowfall is January (2.99").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Grahn, KY
- Average snowfall days in December: 7.2 days
The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Grahn, KY
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in December: 4h and 1min
The months with the most sunshine are June and August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in December
Grahn, KY
- Average sunshine days in December: 13.3 days
The month with the most sunshine days is October (16.9 days).
The month with the least sunshine days is February (9.8 days).
Average UV index in December
Grahn, 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, November and December (UV index 2).
Average cloud cover in December
Grahn, KY
- Average cloud cover in December: 57
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in December
Grahn, KY
- Average visibility in December: 5mi
The months with the highest visibility are March, April, June, October and November (6mi).
The months with the lowest visibility are January, February, May, July, August, September and December (5mi).
Grahn, Kentucky, USA
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