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, falling from a frosty 45.1°F (7.3°C) in November to a wintry 33.3°F (0.7°C). Throughout the month of December, Algonquin witnesses an average low-temperature of 23.2°F (-4.9°C).Humidity
In December, the average relative humidity in Algonquin is 82%.Rainfall
The month with the least rainfall is December, when the rain falls for 6.5 days and typically collects 0.67" (17mm) of precipitation.Snowfall
Months with snowfall in Algonquin are January through May, October through December. In December, in Algonquin, it is snowing for 9.1 days. Throughout December, 1.06" (27mm) of snow is accumulated. In Algonquin, during the entire year, snow falls for 43.2 days and aggregates up to 7.4" (188mm) of snow.Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year in Algonquin, Illinois.On the first day of December in Algonquin, sunrise is at 7:02 am and sunset at 4:22 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 4:31 pm CST.
Sunshine
The average sunshine in December in Algonquin is 3.9h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index in Algonquin. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the average person.Note: The UV index of 1 during December leads to these advisories:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Algonquin in December?
What is the average humidity in December in Algonquin?
What is the driest month in Algonquin?
How much does it rain in Algonquin in December?
How many days does it snow in December in Algonquin?
What is the month with the shortest days in Algonquin?
How many hours of daylight does Algonquin have in December?
When is the sunrise / sunset in December in Algonquin?
How many hours of sunshine does Algonquin have in December?
What are the months with the lowest UV index in Algonquin?
What is the UV index intensity in December in Algonquin?
Average temperature in December
Algonquin, IL
- Average high temperature in December: 33.3°F
The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (27°F).
- Average low temperature in December: 23.2°F
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (15.3°F).
Average pressure in December
Algonquin, 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
Algonquin, IL
- Average wind speed in December: 9.2mph
The windiest months (with the highest average wind speed) are January and February (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.1mph).
Average humidity in December
Algonquin, IL
- Average humidity in December: 82%
The month with the highest relative humidity is January (85%).
The months with the lowest relative humidity are April and October (76%).
Average rainfall in December
Algonquin, IL
- Average rainfall in December: 0.67"
The wettest months (with the highest rainfall) are April and August (1.89").
The driest month (with the least rainfall) is December (0.67").
Average rainfall days in December
Algonquin, IL
- Average rainfall days in December: 6.5 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is February (4.1 days).
Average snowfall in December
Algonquin, IL
- Average snowfall in December: 1.06"
The month with the highest snowfall is January (2.01").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Algonquin, IL
- Average snowfall days in December: 9.1 days
The month with the highest number of snowfall days is January (12.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Algonquin, 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: 3h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in December
Algonquin, IL
- Average sunshine days in December: 18.5 days
The month with the most sunshine days is December (18.5 days).
The month with the least sunshine days is July (10.7 days).
Average UV index in December
Algonquin, IL
- Average UV index in December: 1
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Algonquin, IL
- Average cloud cover in December: 59
The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are July, August and September (Cloud cover 32).
Average visibility in December
Algonquin, IL
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Algonquin, Illinois, USA
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