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
Arrival of December comes with a reduction in the average high-temperature, falling from a fresh 50.4°F (10.2°C) in November to a cold 39.2°F (4°C). Throughout the month of December, Windsor expects an average low of 28.4°F (-2°C).Humidity
In December, the average relative humidity in Windsor is 79%.Rainfall
In Windsor, Illinois, during December, the rain falls for 5.9 days and regularly aggregates up to 0.67" (17mm) of precipitation. Throughout the year, there are 116.5 rainfall days, and 11.54" (293mm) of precipitation is accumulated.Snowfall
January through March, November and December are months with snowfall in Windsor. In Windsor, during December, snow falls for 4 days and regularly aggregates up to 0.67" (17mm) of snow. Throughout the year, there are 19 snowfall days, and 2.8" (71mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 24min of daylight.On the first day of December, sunrise is at 6:56 am and sunset at 4:31 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 4:41 pm CST.
Sunshine
The average sunshine in December is 4.5h.UV index
The months with the lowest UV index in Windsor are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the average person.Note: A maximum high daily UV index of 2 during December translates into the following directions:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Opt for tightly woven and loose clothing to enhance protection from the Sun. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Frequently asked questions
Is December cold in Windsor?
What is the average humidity in December in Windsor?
How much does it rain in Windsor in December?
How many days does it snow in December in Windsor?
What is the month with the shortest days in Windsor?
What is the average length of the day in December in Windsor?
When is the sunrise / sunset in December in Windsor?
How long on average sun shines in December in Windsor?
What are the months with the lowest UV index in Windsor?
What is the UV index intensity in December in Windsor?
Average temperature in December
Windsor, IL
- Average high temperature in December: 39.2°F
The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (34.3°F).
- Average low temperature in December: 28.4°F
The month with the highest average low temperature is July (66.2°F).
The coldest month (with the lowest average low temperature) is January (21.9°F).
Average pressure in December
Windsor, IL
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Windsor, IL
- Average wind speed in December: 9.8mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).
Average humidity in December
Windsor, IL
- Average humidity in December: 79%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (70%).
Average rainfall in December
Windsor, IL
- Average rainfall in December: 0.67"
The wettest month (with the highest rainfall) is June (1.46").
The driest month (with the least rainfall) is February (0.55").
Average rainfall days in December
Windsor, IL
- Average rainfall days in December: 5.9 days
The month with the highest number of rainy days is May (14.3 days).
The month with the least rainy days is February (4.9 days).
Average snowfall in December
Windsor, IL
- Average snowfall in December: 0.67"
The month with the highest snowfall is February (0.83").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Windsor, IL
- Average snowfall days in December: 4 days
The month with the highest number of snowfall days is February (5.9 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Windsor, IL
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in December: 4h and 3min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days in December
Windsor, IL
- Average sunshine days in December: 22.1 days
The month with the most sunshine days is December (22.1 days).
The month with the least sunshine days is June (13.5 days).
Average UV index in December
Windsor, IL
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Windsor, IL
- Average cloud cover in December: 53
The months with the most cloud cover are January and February (Cloud cover 55).
The months with the least cloud cover are June and September (Cloud cover 30).
Average visibility in December
Windsor, IL
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).
Windsor, Illinois, USA
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