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 in Tinley Park corresponds with a temperature reduction, down from November's frosty 46.9°F (8.3°C) to a wintry 35.4°F (1.9°C). The month of December records an average low-temperature of 25.7°F (-3.5°C).Humidity
In December, the average relative humidity is 81%.Rainfall
January, February and December are months with the least rain in Tinley Park when the rain falls for 4.8 days and typically aggregates up to 0.55" (14mm) of rain.Snowfall
January through April, October through December are months with snowfall in Tinley Park, Illinois. In December, it is snowing for 6.6 days. Throughout December, 0.47" (12mm) of snow is accumulated. Throughout the year, there are 34.2 snowfall days, and 4.8" (122mm) of snow is accumulated.Daylight
The month with the shortest days in Tinley Park, Illinois, is December, with an average of 9h and 12min of daylight.On the first day of December in Tinley Park, Illinois, sunrise is at 6:59 am and sunset at 4:21 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 4:31 pm CST.
Sunshine
The average sunshine in December in Tinley Park, Illinois, is 4.1h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for average individuals.Note: In December, the maximum UV index of 1 translates into these guidelines:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Frequently asked questions
How cold is December in Tinley Park?
What is the average humidity in December in Tinley Park?
What is the driest month in Tinley Park?
How many days does it rain in December in Tinley Park?
How many days does it snow in December in Tinley Park?
What is the month with the shortest days in Tinley Park?
How many hours of daylight does Tinley Park have in December?
When are sunrise and sunset in December in Tinley Park?
How many hours of sunshine does Tinley Park have in December?
What is the month with the lowest UV index in Tinley Park?
What is the UV index intensity in December in Tinley Park?
Average temperature in December
Tinley Park, IL
- Average high temperature in December: 35.4°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 (29.7°F).
- Average low temperature in December: 25.7°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (18.7°F).
Average pressure in December
Tinley Park, IL
- Average pressure in December: 30.1"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
Tinley Park, IL
- Average wind speed in December: 9.4mph
The windiest month (with the highest average wind speed) is January (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in December
Tinley Park, IL
- Average humidity in December: 81%
The month with the highest relative humidity is February (83%).
The month with the lowest relative humidity is October (73%).
Average rainfall in December
Tinley Park, IL
- Average rainfall in December: 0.55"
The wettest month (with the highest rainfall) is May (1.54").
The driest months (with the least rainfall) are January, February and December (0.55").
Average rainfall days in December
Tinley Park, IL
- Average rainfall days in December: 4.8 days
The month with the highest number of rainy days is July (14.1 days).
The month with the least rainy days is February (4.1 days).
Average snowfall in December
Tinley Park, IL
- Average snowfall in December: 0.47"
The month with the highest snowfall is January (1.3").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Tinley Park, IL
- Average snowfall days in December: 6.6 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
Tinley Park, IL
- Average daylight in December: 9h and 1min
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 12min).
- Average sunshine in December: 4h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in December
Tinley Park, IL
- Average sunshine days in December: 20.6 days
The month with the most sunshine days is November (20.7 days).
The month with the least sunshine days is June (13.1 days).
Average UV index in December
Tinley 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
Tinley Park, 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 30).
Average visibility in December
Tinley Park, 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).
Tinley Park, Illinois, USA
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