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 indicates a decrease in the average high-temperature, moving from a chilly 45.9°F (7.7°C) in November to a wintry 34.2°F (1.2°C). Sandwich's average low-temperature in December is measured at a subzero cold 23.9°F (-4.5°C).Humidity
In Sandwich, the average relative humidity in December is 82%.Rainfall
In Sandwich, in December, during 8.2 rainfall days, 1.85" (47mm) of precipitation is typically accumulated. In Sandwich, during the entire year, the rain falls for 168.3 days and collects up to 35.47" (901mm) of precipitation.Snowfall
January through April, October through December are months with snowfall. In Sandwich, in December, during 10.2 snowfall days, 2.87" (73mm) of snow is typically accumulated. In Sandwich, during the entire year, snow falls for 47.1 days and aggregates up to 16.61" (422mm) of snow.Daylight
December has the shortest days of the year in Sandwich, 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 4:25 pm. On the last day of December, in Sandwich, sunrise is at 7:21 am and sunset at 4:34 pm CST.
Sunshine
The average sunshine in December 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 value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: In December, the UV index of 1 transforms into the following advice:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Frequently asked questions
How cold is it in Sandwich in December?
What is the average humidity in December in Sandwich?
How much does it rain in Sandwich in December?
How much does it snow in Sandwich in December?
What is the month with the shortest days in Sandwich?
How many hours of daylight does Sandwich have in December?
What time are sunrise and sunset in December in Sandwich?
How many hours of sunshine does Sandwich have in December?
When is the lowest UV index in Sandwich?
What is the UV index reading in December in Sandwich?
Average temperature in December
Sandwich, IL
- Average high temperature in December: 34.2°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 (28.2°F).
- Average low temperature in December: 23.9°F
The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).
Average pressure in December
Sandwich, IL
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Sandwich, IL
- Average wind speed in December: 9.1mph
The windiest months (with the highest average wind speed) are January and April (9.8mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity in December
Sandwich, IL
- Average humidity in December: 82%
The months with the highest relative humidity are July and August (84%).
The month with the lowest relative humidity is October (74%).
Average rainfall in December
Sandwich, IL
- Average rainfall in December: 1.85"
The wettest month (with the highest rainfall) is May (4.88").
The driest month (with the least rainfall) is November (1.73").
Average rainfall days in December
Sandwich, IL
- Average rainfall days in December: 8.2 days
The month with the highest number of rainy days is July (20.3 days).
The month with the least rainy days is February (6 days).
Average snowfall in December
Sandwich, IL
- Average snowfall in December: 2.87"
The month with the highest snowfall is January (4.88").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Sandwich, IL
- Average snowfall days in December: 10.2 days
The month with the highest number of snowfall days is January (13.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Sandwich, IL
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 6min).
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 June and August (Average sunshine: 9h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in December
Sandwich, IL
- Average sunshine days in December: 14.5 days
The month with the most sunshine days is November (16.3 days).
The month with the least sunshine days is July (7.2 days).
Average UV index in December
Sandwich, IL
- Average UV index in December: 1
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in December
Sandwich, IL
- Average cloud cover in December: 57
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 34).
Average visibility in December
Sandwich, 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).
Sandwich, Illinois, USA
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