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
Grand Rivers in December undergoes a mild reduction in the average high-temperature, shifting from November's mild 55.4°F (13°C) to a frosty 46.4°F (8°C). Throughout December, Grand Rivers anticipates an average low-temperature of 34.2°F (1.2°C).Humidity
In Grand Rivers, the average relative humidity in December is 78%.Rainfall
In December, the rain falls for 7.1 days. Throughout December, 0.63" (16mm) of precipitation is accumulated. Throughout the year, in Grand Rivers, there are 94.8 rainfall days, and 8.7" (221mm) of precipitation is accumulated.Snowfall
January through March, November and December are months with snowfall in Grand Rivers. In Grand Rivers, in December, during 2.2 snowfall days, 0.08" (2mm) of snow is typically accumulated. In Grand Rivers, during the entire year, snow falls for 11 days and aggregates up to 0.83" (21mm) of snow.Daylight
With an average of 9h and 42min of daylight, December has the shortest days of the year.On the first day of December in Grand Rivers, sunrise is at 6:48 am and sunset at 4:36 pm. On the last day of the month, sunrise is at 7:06 am and sunset at 4:46 pm CST.
Sunshine
In Grand Rivers, the average sunshine in December is 4.9h.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 estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the average person.Note: The UV index of 2 in December translates into these instructions:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Frequently asked questions
What are December temperatures in Grand Rivers?
What is the average humidity in December in Grand Rivers?
How many days does it rain in December in Grand Rivers?
How many days does it snow in December in Grand Rivers?
What is the month with the shortest days in Grand Rivers?
How many hours of daylight does Grand Rivers have in December?
When is the sunrise / sunset in December in Grand Rivers?
How long on average sun shines in December in Grand Rivers?
When is the lowest UV index in Grand Rivers?
What is the UV index reading in December in Grand Rivers?
Average temperature in December
Grand Rivers, KY
- Average high temperature in December: 46.4°F
The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (41.7°F).
- Average low temperature in December: 34.2°F
The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).
Average pressure in December
Grand Rivers, KY
- Average pressure in December: 30.14"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in December
Grand Rivers, KY
- Average wind speed in December: 8.5mph
The windiest month (with the highest average wind speed) is April (9.1mph).
The calmest month (with the lowest average wind speed) is July (5.6mph).
Average humidity in December
Grand Rivers, KY
- Average humidity in December: 78%
The months with the highest relative humidity are March and May (79%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Grand Rivers, KY
- Average rainfall in December: 0.63"
The wettest month (with the highest rainfall) is February (1.06").
The driest month (with the least rainfall) is September (0.28").
Average rainfall days in December
Grand Rivers, KY
- Average rainfall days in December: 7.1 days
The month with the highest number of rainy days is July (10.7 days).
The month with the least rainy days is November (5.7 days).
Average snowfall in December
Grand Rivers, KY
- Average snowfall in December: 0.08"
The month with the highest snowfall is February (0.28").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Grand Rivers, KY
- Average snowfall days in December: 2.2 days
The month with the highest number of snowfall days is February (3.1 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
Grand Rivers, 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 42min).
- Average sunshine in December: 4h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The months with the least sunshine are January and February (Average sunshine: 4h and 36min).
Average sunshine days in December
Grand Rivers, KY
- Average sunshine days in December: 22.4 days
The month with the most sunshine days is October (23.3 days).
The month with the least sunshine days is July (15.7 days).
Average UV index in December
Grand Rivers, 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
Grand Rivers, KY
- Average cloud cover in December: 48
The month with the most cloud cover is February (Cloud cover 51).
The months with the least cloud cover are June and September (Cloud cover 28).
Average visibility in December
Grand Rivers, KY
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Grand Rivers, Kentucky, USA
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