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 arrival of December corresponds with a temperature reduction, down from November's cool 53.2°F (11.8°C) to a cold 42.4°F (5.8°C). The average low-temperature, in December, is a subzero cold 30.2°F (-1°C).Humidity
The average relative humidity in December is 77%.Rainfall
In December, the rain falls for 5.3 days. Throughout December, 0.63" (16mm) of precipitation is accumulated. Throughout the year, in Shiloh, there are 110.1 rainfall days, and 11.1" (282mm) of precipitation is accumulated.Snowfall
January through March, November and December are months with snowfall. In Shiloh, in December, snow falls for 2.9 days, with typically accumulated 0.2" (5mm) of snow. In Shiloh, Illinois, during the entire year, snow falls for 13.8 days and aggregates up to 1.38" (35mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 30min of daylight.On the first day of December in Shiloh, sunrise is at 6:58 am and sunset at 4:38 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 4:48 pm CST.
Sunshine
The average sunshine in December is 4.7h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: An average UV index of 2 in December transforms into this advice:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Frequently asked questions
How cold does it get in Shiloh in December?
What is the average humidity in December in Shiloh?
How many days does it rain in December in Shiloh?
How much does it snow in Shiloh in December?
What is the month with the shortest days in Shiloh?
How many hours of daylight does Shiloh have in December?
What time are sunrise and sunset in December in Shiloh?
How many hours of sunshine does Shiloh have in December?
What are the months with the lowest UV index in Shiloh?
How high is the UV index in December in Shiloh?
Average temperature in December
Shiloh, IL
- Average high temperature in December: 42.4°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (37.8°F).
- Average low temperature in December: 30.2°F
The month with the highest average low temperature is July (68°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).
Average pressure in December
Shiloh, IL
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Shiloh, IL
- Average wind speed in December: 8.8mph
The windiest month (with the highest average wind speed) is January (9.5mph).
The calmest month (with the lowest average wind speed) is July (5.6mph).
Average humidity in December
Shiloh, IL
- Average humidity in December: 77%
The months with the highest relative humidity are May, July and August (79%).
The month with the lowest relative humidity is October (70%).
Average rainfall in December
Shiloh, IL
- Average rainfall in December: 0.63"
The wettest month (with the highest rainfall) is May (1.5").
The driest month (with the least rainfall) is February (0.47").
Average rainfall days in December
Shiloh, IL
- Average rainfall days in December: 5.3 days
The month with the highest number of rainy days is July (13.2 days).
The month with the least rainy days is January (4.8 days).
Average snowfall in December
Shiloh, IL
- Average snowfall in December: 0.2"
The month with the highest snowfall is January (0.51").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Shiloh, IL
- Average snowfall days in December: 2.9 days
The month with the highest number of snowfall days is January (4.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Shiloh, IL
- Average daylight in December: 9h and 3min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 4h and 4min
The months with the most sunshine are June and July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in December
Shiloh, IL
- Average sunshine days in December: 22.9 days
The month with the most sunshine days is January (23.2 days).
The month with the least sunshine days is July (15.4 days).
Average UV index in December
Shiloh, 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, November and December (UV index 2).
Average cloud cover in December
Shiloh, IL
- Average cloud cover in December: 49
The month with the most cloud cover is January (Cloud cover 51).
The months with the least cloud cover are June and August (Cloud cover 28).
Average visibility in December
Shiloh, 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).
Shiloh, Illinois, USA
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