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
December shows a mild decline in the average high-temperature, falling from November's refreshing 55.6°F (13.1°C) to a chilly 46.2°F (7.9°C). Shady Grove's average low-temperature in December is measured at a wintry 34.2°F (1.2°C).Humidity
In Shady Grove, the average relative humidity in December is 78%.Rainfall
In December, the rain falls for 9 days. Throughout December, 1.14" (29mm) of precipitation is accumulated. In Shady Grove, during the entire year, the rain falls for 126.4 days and collects up to 16.89" (429mm) of precipitation.Snowfall
January through March, November and December are months with snowfall in Shady Grove. In Shady Grove, in December, during 1.4 snowfall days, 0.08" (2mm) of snow is typically accumulated. Throughout the year, there are 8.9 snowfall days, and 1.65" (42mm) of snow is accumulated.Daylight
With an average of 9h and 42min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 6:49 am and sunset at 4:37 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 4:47 pm CST.
Sunshine
In Shady Grove, the average sunshine in December is 4.9h.UV index
January and December, with an average maximum UV index of 2, are months with the lowest UV index in Shady Grove. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for ordinary individuals.Note: A maximum high UV index of 2 in December translates into the following recommendations:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Frequently asked questions
What is the average December temperature in Shady Grove?
What is the average humidity in December in Shady Grove?
How much does it rain in Shady Grove in December?
How much does it snow in Shady Grove in December?
What is the month with the shortest days in Shady Grove?
What is the average length of the day in December in Shady Grove?
When is the sunrise / sunset in December in Shady Grove?
How many hours of sunshine does Shady Grove have in December?
What is the month with the lowest UV index in Shady Grove?
How high is the UV index in December in Shady Grove?
Average temperature in December
Shady Grove, IL
- Average high temperature in December: 46.2°F
The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is January (41.5°F).
- Average low temperature in December: 34.2°F
The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (28.6°F).
Average pressure in December
Shady Grove, IL
- 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
Shady Grove, IL
- Average wind speed in December: 8.5mph
The windiest month (with the highest average wind speed) is April (9mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity in December
Shady Grove, IL
- 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 (70%).
Average rainfall in December
Shady Grove, IL
- Average rainfall in December: 1.14"
The wettest month (with the highest rainfall) is May (1.93").
The driest month (with the least rainfall) is September (0.63").
Average rainfall days in December
Shady Grove, IL
- Average rainfall days in December: 9 days
The month with the highest number of rainy days is May (14.7 days).
The month with the least rainy days is October (7.6 days).
Average snowfall in December
Shady Grove, IL
- Average snowfall in December: 0.08"
The month with the highest snowfall is February (0.71").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Shady Grove, IL
- Average snowfall days in December: 1.4 days
The month with the highest number of snowfall days is February (3.3 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
Shady Grove, 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 42min).
- Average sunshine in December: 4h and 5min
The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).
Average sunshine days in December
Shady Grove, IL
- Average sunshine days in December: 20 days
The month with the most sunshine days is October (22.3 days).
The month with the least sunshine days is July (14.2 days).
Average UV index in December
Shady Grove, 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 and December (UV index 2).
Average cloud cover in December
Shady Grove, IL
- Average cloud cover in December: 49
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
Shady Grove, 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).
Shady Grove, Illinois, USA
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