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 shift to December brings a decrease in the average high-temperature in Oak Lawn, falling from a frosty 46.2°F (7.9°C) in November to an icy 35.2°F (1.8°C). Throughout December, Oak Lawn's nights experience a slight temperature dip to a freezing cold 26.4°F (-3.1°C).Humidity
In December, the average relative humidity in Oak Lawn is 80%.Rainfall
December is the month with the least rainfall. Rain falls for 7.4 days and accumulates 1.02" (26mm) of precipitation.Snowfall
Months with snowfall in Oak Lawn are January through April, October through December. In Oak Lawn, in December, snow falls for 9.4 days, with typically accumulated 1.5" (38mm) of snow. In Oak Lawn, during the entire year, snow falls for 42.4 days and aggregates up to 11.61" (295mm) of snow.Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year.On the first day of December, 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 4:30 pm CST.
Sunshine
In Oak Lawn, the average sunshine in December is 4.2h.UV index
December is the month with the lowest UV index in Oak Lawn, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for the average person.Note: The daily high UV index of 1 during December translates into the following recommendations:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Frequently asked questions
How cold is it in Oak Lawn in December?
What is the average humidity in December in Oak Lawn?
What is the driest month in Oak Lawn?
How many days does it rain in December in Oak Lawn?
How much does it snow in Oak Lawn in December?
What is the month with the shortest days in Oak Lawn?
What is the average length of the day in December in Oak Lawn?
When are sunrise and sunset in December in Oak Lawn?
How many hours of sunshine does Oak Lawn have in December?
When is the lowest UV index in Oak Lawn?
How high is the UV index in December in Oak Lawn?
Average temperature in December
Oak Lawn, IL
- Average high temperature in December: 35.2°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (29.5°F).
- Average low temperature in December: 26.4°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 (18.9°F).
Average pressure in December
Oak Lawn, 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
Oak Lawn, IL
- Average wind speed in December: 9.9mph
The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).
Average humidity in December
Oak Lawn, 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
Oak Lawn, IL
- Average rainfall in December: 1.02"
The wettest month (with the highest rainfall) is May (3.07").
The driest month (with the least rainfall) is December (1.02").
Average rainfall days in December
Oak Lawn, IL
- Average rainfall days in December: 7.4 days
The month with the highest number of rainy days is July (18 days).
The month with the least rainy days is February (4.9 days).
Average snowfall in December
Oak Lawn, IL
- Average snowfall in December: 1.5"
The month with the highest snowfall is February (3.07").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Oak Lawn, IL
- Average snowfall days in December: 9.4 days
The month with the highest number of snowfall days is January (11.8 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
Oak Lawn, 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 30min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in December
Oak Lawn, IL
- Average sunshine days in December: 15.5 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is July (9.8 days).
Average UV index in December
Oak Lawn, IL
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Oak Lawn, 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 28).
Average visibility in December
Oak Lawn, 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).
Oak Lawn, Illinois, USA
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