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 onset of December results in a decrease in the average high-temperature, receding from a cool 54.1°F (12.3°C) in November to a chilly 45.1°F (7.3°C). An average minimum temperature of 32.9°F (0.5°C) marks the month of December.Humidity
February and December, with an average relative humidity of 80%, are the most humid months in Heidelberg.Rainfall
In Heidelberg, during December, the rain falls for 12.2 days and regularly aggregates up to 3.07" (78mm) of precipitation. In Heidelberg, during the entire year, the rain falls for 167.6 days and collects up to 33.11" (841mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. In Heidelberg, in December, during 6.5 snowfall days, 2.48" (63mm) of snow is typically accumulated. Throughout the year, there are 32.6 snowfall days, and 12.17" (309mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 36min of daylight.On the first day of the month, sunrise is at 7:31 am and sunset at 5:17 pm. On the last day of December, sunrise is at 7:49 am and sunset at 5:27 pm EST.
Sunshine
The average sunshine in December is 4.4h.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 of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: The maximum UV index of 2 during December leads to these instructions:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Enhance your sun protection with tightly woven, yet airy clothing. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in December?
What is the most humid month?
What is the average humidity in December?
How many days does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When are sunrise and sunset in December?
How long on average sun shines in December?
When is the lowest UV index?
How high is the UV index in December?
Average temperature in December
Heidelberg, 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: 32.9°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (27°F).
Average pressure in December
Heidelberg, 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 (29.97"Hg).
Average wind speed in December
Heidelberg, KY
- Average wind speed in December: 6.6mph
The windiest months (with the highest average wind speed) are January and February (7.1mph).
The calmest month (with the lowest average wind speed) is August (4.3mph).
Average humidity in December
Heidelberg, 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 June, August, October and November (75%).
Average rainfall in December
Heidelberg, KY
- Average rainfall in December: 3.07"
The wettest months (with the highest rainfall) are February and May (3.46").
The driest month (with the least rainfall) is September (2.05").
Average rainfall days in December
Heidelberg, KY
- Average rainfall days in December: 12.2 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is November (10.7 days).
Average snowfall in December
Heidelberg, KY
- Average snowfall in December: 2.48"
The month with the highest snowfall is February (2.99").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Heidelberg, KY
- Average snowfall days in December: 6.5 days
The month with the highest number of snowfall days is January (9.6 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
Heidelberg, 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 June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in December
Heidelberg, KY
- Average sunshine days in December: 13.3 days
The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is February (10.3 days).
Average UV index in December
Heidelberg, 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
Heidelberg, 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 32).
Average visibility in December
Heidelberg, KY
- Average visibility in December: 5mi
The months with the highest visibility are April, June, October and November (6mi).
The months with the lowest visibility are January, February, March, May, July, August, September and December (5mi).
Heidelberg, Kentucky, USA
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