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
Heidelberg's weather changes with the onset of December, slightly falling from a fresh 54.1°F (12.3°C) in November to a frosty 45.1°F (7.3°C). An average low-temperature of 32.9°F (0.5°C) is noted during the month of December.Humidity
The months with the highest humidity are February and December, with an average relative humidity of 80%.Rainfall
In Heidelberg, in December, during 12.2 rainfall days, 3.07" (78mm) of precipitation is typically accumulated. Throughout the year, in Heidelberg, Kentucky, there are 167.6 rainfall days, and 33.11" (841mm) of precipitation is accumulated.Snowfall
January through April, October through December are months with snowfall in Heidelberg. In Heidelberg, in December, snow falls for 6.5 days, with typically accumulated 2.48" (63mm) of snow. Throughout the year, in Heidelberg, 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, in Heidelberg, sunrise is at 7:49 am and sunset at 5:27 pm EST.
Sunshine
In December, the average sunshine is 4.4h.UV index
The months with the lowest UV index in Heidelberg are January, February and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: A daily high UV index of 2 in December leads to these guidelines:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Frequently asked questions
What is the usual temperature for Heidelberg in December?
What is the most humid month in Heidelberg?
What is the average humidity in December in Heidelberg?
How many days does it rain in December in Heidelberg?
How many days does it snow in December in Heidelberg?
What is the month with the shortest days in Heidelberg?
How many hours of daylight does Heidelberg have in December?
When are sunrise and sunset in December in Heidelberg?
How many hours of sunshine does Heidelberg have in December?
What are the months with the lowest UV index in Heidelberg?
How high is the UV index in December in Heidelberg?
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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