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 shift from November to December involves a decrease in the average high-temperature, dropping from a cool 54.5°F (12.5°C) to a chilly 45.1°F (7.3°C). In Finneyville, December's nights observe an average temperature dip to an icy 33.3°F (0.7°C).Humidity
The average relative humidity in December is 78%.Rainfall
In Finneyville, Illinois, during December, the rain falls for 9.5 days and regularly aggregates up to 1.57" (40mm) of precipitation. Throughout the year, there are 136.4 rainfall days, and 20" (508mm) of precipitation is accumulated.Snowfall
Months with snowfall in Finneyville are January through April, November and December. In Finneyville, Illinois, in December, during 3.5 snowfall days, 0.28" (7mm) of snow is typically accumulated. Throughout the year, in Finneyville, there are 15.2 snowfall days, and 3.03" (77mm) of snow is accumulated.Daylight
December has the shortest days of the year in Finneyville, with an average of 9h and 36min of daylight.On the first day of the month, sunrise is at 6:49 am and sunset at 4:34 pm. On the last day of December, in Finneyville, Illinois, sunrise is at 7:07 am and sunset at 4:44 pm CST.
Sunshine
The average sunshine in December in Finneyville is 4.7h.UV index
January, February 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 health risk from unsafe exposure to UV radiation for average individuals.Note: The average daily UV index of 2 in December transforms into the following instructions:
Sun exposure does not present considerable issues for many, yet infants, fair-skinned people, and children necessitate constant protection. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Boost your sun resistance with garments that are densely woven yet spacious. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Frequently asked questions
What are the temperatures in Finneyville in December?
What is the average humidity in December in Finneyville?
How many days does it rain in December in Finneyville?
How many days does it snow in December in Finneyville?
What is the month with the shortest days in Finneyville?
How many hours of daylight does Finneyville have in December?
When are sunrise and sunset in December in Finneyville?
How long on average sun shines in December in Finneyville?
What is the month with the lowest UV index in Finneyville?
How high is the UV index in December in Finneyville?
Average temperature in December
Finneyville, IL
- Average high temperature in December: 45.1°F
The warmest month (with the highest average high temperature) is July (86.2°F).
The month with the lowest average high temperature is January (40.1°F).
- Average low temperature in December: 33.3°F
The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (27.5°F).
Average pressure in December
Finneyville, IL
- 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 (29.95"Hg).
Average wind speed in December
Finneyville, IL
- Average wind speed in December: 9.1mph
The windiest month (with the highest average wind speed) is February (9.9mph).
The calmest month (with the lowest average wind speed) is July (5.8mph).
Average humidity in December
Finneyville, IL
- Average humidity in December: 78%
The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Finneyville, IL
- Average rainfall in December: 1.57"
The wettest month (with the highest rainfall) is April (2.2").
The driest month (with the least rainfall) is September (0.91").
Average rainfall days in December
Finneyville, IL
- Average rainfall days in December: 9.5 days
The month with the highest number of rainy days is July (14.8 days).
The month with the least rainy days is January (8.2 days).
Average snowfall in December
Finneyville, IL
- Average snowfall in December: 0.28"
The month with the highest snowfall is January (0.79").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Finneyville, IL
- Average snowfall days in December: 3.5 days
The month with the highest number of snowfall days is January (4.4 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
Finneyville, IL
- 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 4min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in December
Finneyville, IL
- Average sunshine days in December: 17.8 days
The month with the most sunshine days is October (20.7 days).
The month with the least sunshine days is July (13.1 days).
Average UV index in December
Finneyville, IL
- 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
Finneyville, IL
- Average cloud cover in December: 50
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 28).
Average visibility in December
Finneyville, IL
- 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).
Finneyville, Illinois, USA
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