December weather forecastWinfield, IL
December
Weather in December
December, the first month of the winter in Winfield, is also an icy month, with an average temperature fluctuating between 24.3°F (-4.3°C) and 34.3°F (1.3°C).Temperature
In the transition to December, Winfield observes a drop in the average high-temperature, moving from a chilly 45.5°F (7.5°C) in November to an icy 34.3°F (1.3°C). Winfield throughout December, records an average low-temperature of 24.3°F (-4.3°C).Humidity
In Winfield, the average relative humidity in December is 81%.Rainfall
The months with the least rainfall are November and December Rain falls for 7.8 days and accumulates 1.65" (42mm) of rain.Snowfall
January through May, October through December are months with snowfall. In Winfield, in December, during 9.7 snowfall days, 3.03" (77mm) of snow is typically accumulated. In Winfield, during the entire year, snow falls for 47 days and aggregates up to 20.2" (513mm) of snow.Daylight
The month with the shortest days in Winfield, Illinois, is December, with an average of 9h and 12min of daylight.On the first day of December, sunrise is at 7:01 am and sunset at 4:22 pm. On the last day of the month, sunrise is at 7:20 am and sunset at 4:31 pm CST.
Sunshine
The average sunshine in December is 4.1h.UV index
In December, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 2 in December interprets into the following recommendations:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Winfield, 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°F).
- Average low temperature in December: 24.3°F
The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).
Average pressure in December
Winfield, 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
Winfield, IL
- Average wind speed in December: 9.1mph
The windiest month (with the highest average wind speed) is January (9.8mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in December
Winfield, IL
- Average humidity in December: 81%
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
Winfield, IL
- Average rainfall in December: 1.65"
The wettest month (with the highest rainfall) is May (4.45").
The driest months (with the least rainfall) are November and December (1.65").
Average rainfall days in December
Winfield, IL
- Average rainfall days in December: 7.8 days
The month with the highest number of rainy days is July (20.1 days).
The month with the least rainy days is February (5.8 days).
Average snowfall in December
Winfield, IL
- Average snowfall in December: 3.03"
The month with the highest snowfall is January (5.87").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Winfield, IL
- Average snowfall days in December: 9.7 days
The month with the highest number of snowfall days is January (13.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Winfield, IL
- Average daylight in December: 9h and 12min
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 6min
The month with the most sunshine is August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in December
Winfield, IL
- Average sunshine days in December: 15.7 days
The month with the most sunshine days is November (16.1 days).
The month with the least sunshine days is July (8.2 days).
Average UV index in December
Winfield, IL
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in December
Winfield, IL
- Average cloud cover in December: 58
The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are August and September (Cloud cover 32).
Average visibility in December
Winfield, IL
- Average visibility in December: 6mi
The months with the highest visibility are March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January and February (5mi).
