December weather forecastOrland Park, IL
December
Weather in December
December rings in the winter season in Orland Park, with temperatures dropping to an average high of 35.4°F (1.9°C) and low of 25.5°F (-3.6°C). Snow begins to fall once more, setting the scene for a white Christmas. Despite the chilly conditions, pressure remains consistent at around 30.09" (764mm), and clear skies are plentiful, enhancing the city's festive feel.Temperature
Stepping into December, Orland Park observes a temperature decline, with the average high falling from November's frosty 46.8°F (8.2°C) to a cold 35.4°F (1.9°C). During the month of December, the temperature in Orland Park generally drops to a low average of 25.5°F (-3.6°C).Humidity
In Orland Park, the average relative humidity in December is 81%.Rainfall
The month with the least rainfall in Orland Park is December, when the rain falls for 6.9 days and typically collects 1.06" (27mm) of precipitation.Snowfall
Months with snowfall in Orland Park, Illinois, are January through April, October through December. In Orland Park, Illinois, in December, snow falls for 9.4 days, with typically accumulated 1.61" (41mm) of snow. In Orland Park, during the entire year, snow falls for 44.2 days and aggregates up to 11.38" (289mm) of snow.Daylight
December has the shortest days of the year, 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 4:31 pm CST.
Sunshine
The average sunshine in December is 4.1h.UV index
The month with the lowest UV index in Orland Park is December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.Note: The daily maximum UV index of 1 in December interprets into the following advice:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Orland Park, IL
- Average high temperature in December: 35.4°F
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (29.1°F).
- Average low temperature in December: 25.5°F
The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (18.1°F).
Average pressure in December
Orland Park, 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
Orland 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
Orland 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
Orland Park, IL
- Average rainfall in December: 1.06"
The wettest month (with the highest rainfall) is May (2.95").
The driest month (with the least rainfall) is December (1.06").
Average rainfall days in December
Orland Park, IL
- Average rainfall days in December: 6.9 days
The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is February (4.9 days).
Average snowfall in December
Orland Park, IL
- Average snowfall in December: 1.61"
The month with the highest snowfall is February (2.87").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Orland Park, 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
Orland Park, IL
- Average daylight in December: 9h and 12min
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 6min
The months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in December
Orland Park, IL
- Average sunshine days in December: 15.6 days
The month with the most sunshine days is November (18.3 days).
The month with the least sunshine days is July (9.8 days).
Average UV index in December
Orland Park, 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
Orland 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
Orland 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).
