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
With the onset of December, Summit's climate undergoes a slight change as the average high-temperature moves from a cool 54.3°F (12.4°C) in November to a frosty 45.5°F (7.5°C). Summit temperatures generally rest at a low of 33.4°F (0.8°C) during the December nights.Humidity
In Summit, the average relative humidity in December is 79%.Rainfall
In December, in Summit, the rain falls for 11.8 days. Throughout December, 2.28" (58mm) of precipitation is accumulated. In Summit, during the entire year, the rain falls for 158.9 days and collects up to 30.08" (764mm) of precipitation.Snowfall
Months with snowfall in Summit are January through April, November and December. In Summit, in December, snow falls for 4.6 days, with typically accumulated 1.02" (26mm) of snow. In Summit, during the entire year, snow falls for 23.3 days and aggregates up to 6.54" (166mm) of snow.Daylight
With an average of 9h and 36min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:40 am and sunset at 5:26 pm. On the last day of the month, sunrise is at 7:58 am and sunset at 5:36 pm EST.
Sunshine
The average sunshine in December in Summit is 4.4h.UV index
The months with the lowest UV index in Summit are January, February and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for the average person.Note: In December, a daily maximum UV index of 2 leads to the following instructions:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. To guard against the harmful effects of the Sun, minimize exposure during midday. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in December in Summit?
What is the average humidity in December in Summit?
How many days does it rain in December in Summit?
How much does it snow in Summit in December?
What is the month with the shortest days in Summit?
How many hours of daylight does Summit have in December?
When is the sunrise / sunset in December in Summit?
How long on average sun shines in December in Summit?
What are the months with the lowest UV index in Summit?
What is the UV index intensity in December in Summit?
Average temperature in December
Summit, KY
- Average high temperature in December: 45.5°F
The warmest month (with the highest average high temperature) is July (86.7°F).
The month with the lowest average high temperature is January (40.6°F).
- Average low temperature in December: 33.4°F
The month with the highest average low temperature is July (67.3°F).
The coldest month (with the lowest average low temperature) is January (27.3°F).
Average pressure in December
Summit, 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
Summit, KY
- Average wind speed in December: 7.8mph
The windiest month (with the highest average wind speed) is February (8.5mph).
The calmest month (with the lowest average wind speed) is July (5.1mph).
Average humidity in December
Summit, KY
- Average humidity in December: 79%
The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is October (74%).
Average rainfall in December
Summit, KY
- Average rainfall in December: 2.28"
The wettest month (with the highest rainfall) is April (3.11").
The driest month (with the least rainfall) is September (1.69").
Average rainfall days in December
Summit, KY
- Average rainfall days in December: 11.8 days
The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is November (9.8 days).
Average snowfall in December
Summit, KY
- Average snowfall in December: 1.02"
The month with the highest snowfall is February (1.97").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Summit, KY
- Average snowfall days in December: 4.6 days
The month with the highest number of snowfall days is January (6.6 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
Summit, 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 months with the most sunshine are June and August (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in December
Summit, KY
- Average sunshine days in December: 15.7 days
The months with the most sunshine days are October and November (18.5 days).
The month with the least sunshine days is July (10.7 days).
Average UV index in December
Summit, 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
Summit, KY
- Average cloud cover in December: 55
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility in December
Summit, KY
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and May (5mi).
Summit, Kentucky, USA
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