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 indicates a shift in the average high-temperature, from November's frosty 47.3°F (8.5°C) to an icy 36.1°F (2.3°C). In December, the recorded average low-temperature is a subzero cold 25.7°F (-3.5°C).Humidity
In December, the average relative humidity is 81%.Rainfall
In December, the rain falls for 7 days. Throughout December, 0.79" (20mm) of precipitation is accumulated. Throughout the year, in Grant Park, Illinois, there are 132 rainfall days, and 15.16" (385mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. In Grant Park, Illinois, in December, snow falls for 7.5 days, with typically accumulated 0.87" (22mm) of snow. Throughout the year, in Grant Park, there are 36.5 snowfall days, and 5.28" (134mm) of snow is accumulated.Daylight
December has the shortest days of the year in Grant Park, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 6:57 am and sunset at 4:22 pm. On the last day of December, in Grant Park, sunrise is at 7:16 am and sunset at 4:31 pm CST.
Sunshine
In December, the average sunshine in Grant Park is 4.2h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index reading 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 1 in December transforms into this advice:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. During bright days, sunglasses that offer UVA and UVB defense are recommended. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
Frequently asked questions
How cold is it in Grant Park in December?
What is the average humidity in December in Grant Park?
How much does it rain in Grant Park in December?
How many days does it snow in December in Grant Park?
What is the month with the shortest days in Grant Park?
How many hours of daylight does Grant Park have in December?
When are sunrise and sunset in December in Grant Park?
How long on average sun shines in December in Grant Park?
When is the lowest UV index in Grant Park?
What is the UV index reading in December in Grant Park?
Average temperature in December
Grant Park, IL
- Average high temperature in December: 36.1°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (30°F).
- Average low temperature in December: 25.7°F
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (18.5°F).
Average pressure in December
Grant Park, IL
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Grant Park, IL
- Average wind speed in December: 9.5mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity in December
Grant Park, IL
- Average humidity in December: 81%
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Grant Park, IL
- Average rainfall in December: 0.79"
The wettest month (with the highest rainfall) is May (2.2").
The driest month (with the least rainfall) is February (0.67").
Average rainfall days in December
Grant Park, IL
- Average rainfall days in December: 7 days
The month with the highest number of rainy days is July (15.7 days).
The month with the least rainy days is February (5.1 days).
Average snowfall in December
Grant Park, IL
- Average snowfall in December: 0.87"
The month with the highest snowfall is January (1.42").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Grant Park, IL
- Average snowfall days in December: 7.5 days
The month with the highest number of snowfall days is January (10.3 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
Grant Park, IL
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 4h and 1min
The months with the most sunshine are June, July and August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in December
Grant Park, IL
- Average sunshine days in December: 17.9 days
The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is July (10.7 days).
Average UV index in December
Grant Park, IL
- Average UV index in December: 1
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Grant Park, IL
- Average cloud cover in December: 57
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in December
Grant Park, IL
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Grant Park, Illinois, USA
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