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 December's arrival, Waterloo's weather changes as the average high-temperature falls from a fresh 51.8°F (11°C) in November to a cold 42.3°F (5.7°C). The nighttime temperature dips to a freezing cold 30.9°F (-0.6°C) on average during December.Humidity
February and December, with an average relative humidity of 81%, are the most humid months in Waterloo.Rainfall
In Waterloo, Kentucky, in December, it is raining for 12.9 days, with typically 2.48" (63mm) of accumulated precipitation. Throughout the year, there are 167 rainfall days, and 30.39" (772mm) of precipitation is accumulated.Snowfall
Months with snowfall in Waterloo are January through April, November and December. In Waterloo, in December, during 7.6 snowfall days, 2.05" (52mm) of snow is typically accumulated. Throughout the year, there are 33.8 snowfall days, and 9.65" (245mm) of snow is accumulated.Daylight
With an average of 9h and 30min of daylight, December has the shortest days of the year in Waterloo.On the first day of December in Waterloo, sunrise is at 7:39 am and sunset at 5:17 pm. On the last day of the month, sunrise is at 7:57 am and sunset at 5:27 pm EST.
Sunshine
In December, the average sunshine in Waterloo is 4.2h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: In December, the average maximum UV index of 2 translates into the following recommendations:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. To avoid the Sun's strongest rays, limit exposure around the mid-day period. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Attention! Nearly twice the Sun's UV radiation can be reflected by snow.
Frequently asked questions
How cold does it get in Waterloo in December?
What is the most humid month in Waterloo?
What is the average humidity in December in Waterloo?
How many days does it rain in December in Waterloo?
How much does it snow in Waterloo in December?
What is the month with the shortest days in Waterloo?
How many hours of daylight does Waterloo have in December?
What time are sunrise and sunset in December in Waterloo?
How many hours of sunshine does Waterloo have in December?
When is the lowest UV index in Waterloo?
How high is the UV index in December in Waterloo?
Average temperature in December
Waterloo, KY
- Average high temperature in December: 42.3°F
The warmest month (with the highest average high temperature) is July (84.9°F).
The month with the lowest average high temperature is January (36.9°F).
- Average low temperature in December: 30.9°F
The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (23.9°F).
Average pressure in December
Waterloo, KY
- Average pressure in December: 30.13"Hg
The months with the highest atmospheric pressure are January and November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Waterloo, KY
- Average wind speed in December: 7.8mph
The windiest month (with the highest average wind speed) is January (8.6mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in December
Waterloo, KY
- Average humidity in December: 81%
The months with the highest relative humidity are February and December (81%).
The month with the lowest relative humidity is October (74%).
Average rainfall in December
Waterloo, KY
- Average rainfall in December: 2.48"
The wettest month (with the highest rainfall) is April (3.43").
The driest month (with the least rainfall) is September (1.73").
Average rainfall days in December
Waterloo, KY
- Average rainfall days in December: 12.9 days
The month with the highest number of rainy days is May (19.1 days).
The month with the least rainy days is February (9.7 days).
Average snowfall in December
Waterloo, KY
- Average snowfall in December: 2.05"
The month with the highest snowfall is February (2.8").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Waterloo, KY
- Average snowfall days in December: 7.6 days
The month with the highest number of snowfall days is January (9.8 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
Waterloo, KY
- Average daylight in December: 9h and 3min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 4h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in December
Waterloo, KY
- Average sunshine days in December: 12.9 days
The month with the most sunshine days is October (17.4 days).
The month with the least sunshine days is May (10.4 days).
Average UV index in December
Waterloo, KY
- Average UV index in December: 2
The months with the highest UV index are 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
Waterloo, 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 29).
Average visibility in December
Waterloo, KY
- Average visibility in December: 6mi
The months with the highest visibility are March, April, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, May and July (5mi).
Waterloo, Kentucky, USA
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