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 start of December involves a temperature drop, moving from a frosty 45.9°F (7.7°C) in November to a wintry 34.3°F (1.3°C). During the month of December, Warrenville's nighttime temperature lowers to an average of 24.4°F (-4.2°C).Humidity
In December, the average relative humidity in Warrenville is 82%.Rainfall
December is the month with the least rainfall. Rain falls for 6.4 days and accumulates 0.71" (18mm) of precipitation.Snowfall
Months with snowfall in Warrenville are January through April, October through December. In December, it is snowing for 8.1 days. Throughout December, 1.02" (26mm) of snow is accumulated. In Warrenville, during the entire year, snow falls for 38.7 days and aggregates up to 6.93" (176mm) of snow.Daylight
The month with the shortest days in Warrenville, Illinois, is December, with an average of 9h and 12min of daylight.On the first day of the month, sunrise is at 7:01 am and sunset at 4:22 pm. On the last day of December, in Warrenville, sunrise is at 7:20 am and sunset at 4:32 pm CST.
Sunshine
In December, the average sunshine is 4.2h.UV index
January and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.Note: A maximum daily UV index of 1 during December morphs into the following directions:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Frequently asked questions
How cold is it in Warrenville in December?
What is the average humidity in December in Warrenville?
What is the driest month in Warrenville?
How much does it rain in Warrenville in December?
How much does it snow in Warrenville in December?
What is the month with the shortest days in Warrenville?
How many hours of daylight does Warrenville have in December?
What time are sunrise and sunset in December in Warrenville?
How long on average sun shines in December in Warrenville?
When is the lowest UV index in Warrenville?
What is the UV index intensity in December in Warrenville?
Average temperature in December
Warrenville, IL
- Average high temperature in December: 34.3°F
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (28.4°F).
- Average low temperature in December: 24.4°F
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (17.1°F).
Average pressure in December
Warrenville, 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
Warrenville, IL
- Average wind speed in December: 9.1mph
The windiest month (with the highest average wind speed) is January (9.7mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in December
Warrenville, IL
- Average humidity in December: 82%
The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is October (73%).
Average rainfall in December
Warrenville, IL
- Average rainfall in December: 0.71"
The wettest month (with the highest rainfall) is May (2.09").
The driest month (with the least rainfall) is December (0.71").
Average rainfall days in December
Warrenville, IL
- Average rainfall days in December: 6.4 days
The month with the highest number of rainy days is July (17.3 days).
The month with the least rainy days is February (4.4 days).
Average snowfall in December
Warrenville, IL
- Average snowfall in December: 1.02"
The month with the highest snowfall is January (1.85").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Warrenville, IL
- Average snowfall days in December: 8.1 days
The month with the highest number of snowfall days is January (11.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Warrenville, 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 months with the most sunshine are July and August (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in December
Warrenville, IL
- Average sunshine days in December: 19.1 days
The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is July (10.2 days).
Average UV index in December
Warrenville, IL
- Average UV index in December: 1
The months with the highest UV index are June, 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
Warrenville, IL
- Average cloud cover in December: 58
The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are August and September (Cloud cover 31).
Average visibility in December
Warrenville, 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).
Warrenville, Illinois, USA
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