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
Orland Hills in December undergoes a mild reduction in the average high-temperature, shifting from November's frosty 46.8°F (8.2°C) to a wintry 35.4°F (1.9°C). Orland Hills in December experiences a low-temperature average of 25.5°F (-3.6°C).Humidity
The average relative humidity in December is 81%.Rainfall
The month with the least rainfall in Orland Hills is December, when the rain falls for 6.9 days and typically collects 1.06" (27mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. In Orland Hills, Illinois, during December, snow falls for 9.4 days and regularly aggregates up to 1.61" (41mm) of snow. In Orland Hills, during the entire year, snow falls for 44.2 days and aggregates up to 11.38" (289mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 12min of daylight.On the first day of December, sunrise is at 6:59 am and sunset at 4:22 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 4:31 pm CST.
Sunshine
In Orland Hills, the average sunshine in December is 4.1h.UV index
With an average maximum UV index of 1, December is the month with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: The daily high UV index of 1 in December translates into this advice:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Always opt for UVA and UVB-resistant sunglasses on radiant days. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Orland Hills in December?
What is the average humidity in December in Orland Hills?
What is the driest month in Orland Hills?
How much does it rain in Orland Hills in December?
How much does it snow in Orland Hills in December?
What is the month with the shortest days in Orland Hills?
How many hours of daylight does Orland Hills have in December?
When are sunrise and sunset in December in Orland Hills?
How long on average sun shines in December in Orland Hills?
What is the month with the lowest UV index in Orland Hills?
What is the UV index reading in December in Orland Hills?
Average temperature in December
Orland Hills, 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 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
Orland Hills, 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 Hills, 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 Hills, 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 Hills, 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 Hills, 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 Hills, 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 Hills, 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 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 Hills, 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 Hills, 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 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 30).
Average visibility in December
Orland Hills, 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).
Orland Hills, Illinois, USA
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