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 onset of December is marked by a decrease in temperature, transitioning from a chilly 44.4°F (6.9°C) in November to an icy 32.4°F (0.2°C). During the nights in December, an average low-temperature of 22.1°F (-5.5°C) is observed in Woodstock.Humidity
In Woodstock, Illinois, the average relative humidity in December is 83%.Rainfall
December is the month with the least rainfall. Rain falls for 7.5 days and accumulates 1.02" (26mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Woodstock. In Woodstock, in December, during 11.6 snowfall days, 2.2" (56mm) of snow is typically accumulated. In Woodstock, during the entire year, snow falls for 51.1 days and aggregates up to 13.46" (342mm) of snow.Daylight
With an average of 9h and 6min of daylight, December has the shortest days of the year in Woodstock.On the first day of the month, sunrise is at 7:03 am and sunset at 4:22 pm. On the last day of December, sunrise is at 7:22 am and sunset at 4:31 pm CST.
Sunshine
In Woodstock, the average sunshine in December is 3.8h.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 low health risk from unsafe exposure to UV radiation for ordinary individuals.Note: The UV index of 1 in December translates into these instructions:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Woodstock?
What is the average humidity in December in Woodstock?
What is the driest month in Woodstock?
How many days does it rain in December in Woodstock?
How many days does it snow in December in Woodstock?
What is the month with the shortest days in Woodstock?
How many hours of daylight does Woodstock have in December?
What time are sunrise and sunset in December in Woodstock?
How many hours of sunshine does Woodstock have in December?
What are the months with the lowest UV index in Woodstock?
How high is the UV index in December in Woodstock?
Average temperature in December
Woodstock, IL
- Average high temperature in December: 32.4°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (26.1°F).
- Average low temperature in December: 22.1°F
The month with the highest average low temperature is July (62.8°F).
The coldest month (with the lowest average low temperature) is January (13.8°F).
Average pressure in December
Woodstock, 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
Woodstock, IL
- Average wind speed in December: 9.1mph
The windiest months (with the highest average wind speed) are January, February and April (9.8mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in December
Woodstock, IL
- Average humidity in December: 83%
The months with the highest relative humidity are January and February (86%).
The months with the lowest relative humidity are April and October (77%).
Average rainfall in December
Woodstock, IL
- Average rainfall in December: 1.02"
The wettest month (with the highest rainfall) is June (3.03").
The driest month (with the least rainfall) is December (1.02").
Average rainfall days in December
Woodstock, IL
- Average rainfall days in December: 7.5 days
The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is January (4.7 days).
Average snowfall in December
Woodstock, IL
- Average snowfall in December: 2.2"
The month with the highest snowfall is January (3.7").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Woodstock, IL
- Average snowfall days in December: 11.6 days
The month with the highest number of snowfall days is January (13.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Woodstock, 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 6min).
- Average sunshine in December: 3h and 5min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in December
Woodstock, IL
- Average sunshine days in December: 14.7 days
The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is July (10 days).
Average UV index in December
Woodstock, IL
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Woodstock, IL
- Average cloud cover in December: 61
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is September (Cloud cover 34).
Average visibility in December
Woodstock, IL
- Average visibility in December: 6mi
The months with the highest visibility are March, April, May, June, October, November and December (6mi).
The months with the lowest visibility are January, February, July, August and September (5mi).
Woodstock, Illinois, USA
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