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 signals a subtle shift in temperature, down from a cool 53.8°F (12.1°C) in November to a chilly 45.1°F (7.3°C). During December, the average low-temperature is a cold 33.1°F (0.6°C).Humidity
The months with the highest humidity are February and December, with an average relative humidity of 80%.Rainfall
In Harper, in December, it is raining for 13.1 days, with typically 3.27" (83mm) of accumulated precipitation. In Harper, Kentucky, during the entire year, the rain falls for 178.7 days and collects up to 34.8" (884mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. In Harper, in December, snow falls for 7.6 days, with typically accumulated 2.95" (75mm) of snow. In Harper, during the entire year, snow falls for 37.5 days and aggregates up to 15.43" (392mm) of snow.Daylight
The month with the shortest days in Harper 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 is 4.4h.UV index
The months with the lowest UV index in Harper are January, February and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index, 2 in December, converts into the following recommendations:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Frequently asked questions
What are the temperatures in Harper in December?
What are the most humid months in Harper?
What is the average humidity in December in Harper?
How many days does it rain in December in Harper?
How many days does it snow in December in Harper?
What is the month with the shortest days in Harper?
How many hours of daylight does Harper have in December?
When are sunrise and sunset in December in Harper?
How many hours of sunshine does Harper have in December?
What is the month with the lowest UV index in Harper?
What is the UV index intensity in December in Harper?
Average temperature in December
Harper, KY
- Average high temperature in December: 45.1°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 (40.1°F).
- Average low temperature in December: 33.1°F
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (26.8°F).
Average pressure in December
Harper, 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
Harper, KY
- Average wind speed in December: 6.4mph
The windiest months (with the highest average wind speed) are January and February (6.9mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in December
Harper, KY
- Average humidity in December: 80%
The months with the highest relative humidity are February and December (80%).
The months with the lowest relative humidity are August and November (74%).
Average rainfall in December
Harper, KY
- Average rainfall in December: 3.27"
The wettest month (with the highest rainfall) is February (3.7").
The driest month (with the least rainfall) is September (2.01").
Average rainfall days in December
Harper, KY
- Average rainfall days in December: 13.1 days
The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is November (11.6 days).
Average snowfall in December
Harper, KY
- Average snowfall in December: 2.95"
The month with the highest snowfall is February (4.25").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Harper, KY
- Average snowfall days in December: 7.6 days
The month with the highest number of snowfall days is January (11.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Harper, 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 2min
The month with the most sunshine is August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in December
Harper, KY
- Average sunshine days in December: 12 days
The month with the most sunshine days is October (15.9 days).
The month with the least sunshine days is February (9.3 days).
Average UV index in December
Harper, 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
Harper, KY
- Average cloud cover in December: 55
The months with the most cloud cover are January and February (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in December
Harper, KY
- Average visibility in December: 5mi
The months with the highest visibility are April, June, August, October and November (6mi).
The months with the lowest visibility are January, February, March, May, July, September and December (5mi).
Harper, Kentucky, USA
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