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 corresponds with a temperature reduction, down from November's chilly 45.1°F (7.3°C) to a wintry 33.4°F (0.8°C). South Elgin, in December, observes a steady average low-temperature of 23.4°F (-4.8°C).Humidity
In December, the average relative humidity is 82%.Rainfall
The month with the least rainfall is December, when the rain falls for 8.1 days and typically collects 1.1" (28mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In South Elgin, in December, during 10.5 snowfall days, 2.2" (56mm) of snow is typically accumulated. In South Elgin, during the entire year, snow falls for 47.4 days and aggregates up to 13.07" (332mm) of snow.Daylight
The month with the shortest days in South Elgin, Illinois, is December, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 7:02 am and sunset at 4:22 pm. On the last day of December, sunrise is at 7:21 am and sunset at 4:31 pm CST.
Sunshine
In South Elgin, the average sunshine in December is 3.9h.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to UV radiation for ordinary individuals.Note: The UV index of 1 in December translates into these instructions:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. It's recommended to limit sun exposure when its radiation is at its peak during midday. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. 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 December?
What is the average humidity in December?
What is the driest month?
How many days does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does South Elgin have in December?
When are sunrise and sunset in December?
How many hours of sunshine does South Elgin have in December?
When is the lowest UV index?
What is the UV index reading in December?
Average temperature in December
South Elgin, IL
- Average high temperature in December: 33.4°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (27.3°F).
- Average low temperature in December: 23.4°F
The month with the highest average low temperature is July (63.9°F).
The coldest month (with the lowest average low temperature) is January (15.4°F).
Average pressure in December
South Elgin, 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
South Elgin, IL
- Average wind speed in December: 9.3mph
The windiest month (with the highest average wind speed) is January (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in December
South Elgin, IL
- Average humidity in December: 82%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (75%).
Average rainfall in December
South Elgin, IL
- Average rainfall in December: 1.1"
The wettest month (with the highest rainfall) is June (3.03").
The driest month (with the least rainfall) is December (1.1").
Average rainfall days in December
South Elgin, IL
- Average rainfall days in December: 8.1 days
The month with the highest number of rainy days is July (17.8 days).
The month with the least rainy days is February (4.9 days).
Average snowfall in December
South Elgin, IL
- Average snowfall in December: 2.2"
The month with the highest snowfall is January (3.62").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
South Elgin, IL
- Average snowfall days in December: 10.5 days
The month with the highest number of snowfall days is January (12.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
South Elgin, 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: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in December
South Elgin, IL
- Average sunshine days in December: 14.6 days
The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is June (10.1 days).
Average UV index in December
South Elgin, IL
- Average UV index in December: 1
The months with the highest UV index are July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
South Elgin, IL
- Average cloud cover in December: 60
The month with the most cloud cover is January (Cloud cover 62).
The months with the least cloud cover are August and September (Cloud cover 33).
Average visibility in December
South Elgin, IL
- Average visibility in December: 6mi
The months with the highest visibility are March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February and July (5mi).
South Elgin, Illinois, USA
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