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
Hickory Hills's progression into December includes a drop in the average high-temperature, from a chilly 46.2°F (7.9°C) in November to a cold 35.2°F (1.8°C). During December, Hickory Hills records an average temperature of 25.5°F (-3.6°C) at night.Humidity
In December, the average relative humidity is 80%.Rainfall
November and December are months with the least rain when the rain falls for 8.5 days and typically aggregates up to 1.77" (45mm) of rain.Snowfall
January through April, October through December are months with snowfall. In Hickory Hills, Illinois, in December, snow falls for 9.6 days, with typically accumulated 2.76" (70mm) of snow. Throughout the year, there are 47.1 snowfall days, and 19.02" (483mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 6:59 am and sunset at 4:21 pm. On the last day of December, sunrise is at 7:18 am and sunset at 4:30 pm CST.
Sunshine
In December, the average sunshine in Hickory Hills is 4.1h.UV index
The month with the lowest UV index in Hickory Hills is December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the average person.Note: In December, the UV index of 1 transforms into the following advice:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Frequently asked questions
How cold is it in Hickory Hills in December?
What is the average humidity in December in Hickory Hills?
What is the driest month in Hickory Hills?
How much does it rain in Hickory Hills in December?
How much does it snow in Hickory Hills in December?
What is the month with the shortest days in Hickory Hills?
How many hours of daylight does Hickory Hills have in December?
When is the sunrise / sunset in December in Hickory Hills?
How long on average sun shines in December in Hickory Hills?
What is the month with the lowest UV index in Hickory Hills?
What is the UV index reading in December in Hickory Hills?
Average temperature in December
Hickory Hills, IL
- Average high temperature in December: 35.2°F
The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (28.9°F).
- Average low temperature in December: 25.5°F
The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (18.3°F).
Average pressure in December
Hickory Hills, IL
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Hickory Hills, IL
- Average wind speed in December: 9.4mph
The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).
Average humidity in December
Hickory Hills, IL
- Average humidity in December: 80%
The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is October (72%).
Average rainfall in December
Hickory Hills, IL
- Average rainfall in December: 1.77"
The wettest month (with the highest rainfall) is May (4.61").
The driest months (with the least rainfall) are November and December (1.77").
Average rainfall days in December
Hickory Hills, IL
- Average rainfall days in December: 8.5 days
The month with the highest number of rainy days is June (19.4 days).
The month with the least rainy days is February (5.9 days).
Average snowfall in December
Hickory Hills, IL
- Average snowfall in December: 2.76"
The month with the highest snowfall is February (5.28").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Hickory Hills, IL
- Average snowfall days in December: 9.6 days
The month with the highest number of snowfall days is January (13.3 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
Hickory Hills, IL
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 4h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in December
Hickory Hills, IL
- Average sunshine days in December: 14.3 days
The month with the most sunshine days is November (16.1 days).
The month with the least sunshine days is June (8.2 days).
Average UV index in December
Hickory Hills, IL
- Average UV index in December: 1
The months with the highest UV index are July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Hickory Hills, IL
- Average cloud cover in December: 58
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility in December
Hickory Hills, IL
- Average visibility in December: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
Hickory Hills, Illinois, USA
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