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
A shift in the average high-temperature occurs in December, reducing from a frosty 44.1°F (6.7°C) in November to an icy 32°F (0°C). Alden sees an average low-temperature of 21.6°F (-5.8°C) during December.Humidity
The average relative humidity in December is 83%.Rainfall
December is the month with the least rainfall in Alden. Rain falls for 7.9 days and accumulates 1.3" (33mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Alden, in December, during 11.6 snowfall days, 2.95" (75mm) of snow is typically accumulated. Throughout the year, there are 54.4 snowfall days, and 16.93" (430mm) of snow is accumulated.Daylight
The month with the shortest days in Alden, Illinois, is December, with an average of 9h and 6min of daylight.On the first day of the month, sunrise is at 7:04 am and sunset at 4:22 pm. On the last day of December, sunrise is at 7:23 am and sunset at 4:31 pm CST.
Sunshine
The average sunshine in December in Alden 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 value of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The maximum UV index of 1 during December leads to these instructions:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Frequently asked questions
How cold is December in Alden?
What is the average humidity in December in Alden?
What is the driest month in Alden?
How many days does it rain in December in Alden?
How many days does it snow in December in Alden?
What is the month with the shortest days in Alden?
How many hours of daylight does Alden have in December?
What time are sunrise and sunset in December in Alden?
How long on average sun shines in December in Alden?
When is the lowest UV index in Alden?
What is the UV index intensity in December in Alden?
Average temperature in December
Alden, IL
- Average high temperature in December: 32°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 (25.3°F).
- Average low temperature in December: 21.6°F
The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (13.3°F).
Average pressure in December
Alden, 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
Alden, IL
- Average wind speed in December: 9.1mph
The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in December
Alden, IL
- Average humidity in December: 83%
The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are April and October (77%).
Average rainfall in December
Alden, IL
- Average rainfall in December: 1.3"
The wettest month (with the highest rainfall) is June (3.58").
The driest month (with the least rainfall) is December (1.3").
Average rainfall days in December
Alden, IL
- Average rainfall days in December: 7.9 days
The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is January (4.9 days).
Average snowfall in December
Alden, IL
- Average snowfall in December: 2.95"
The month with the highest snowfall is January (4.41").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Alden, IL
- Average snowfall days in December: 11.6 days
The month with the highest number of snowfall days is January (14.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Alden, 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 36min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days in December
Alden, IL
- Average sunshine days in December: 14.4 days
The month with the most sunshine days is November (16.3 days).
The month with the least sunshine days is May (9.7 days).
Average UV index in December
Alden, 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
Alden, 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 35).
Average visibility in December
Alden, IL
- Average visibility in December: 5mi
The months with the highest visibility are March, April, May, June, October and November (6mi).
The months with the lowest visibility are January, February, July, August, September and December (5mi).
Alden, Illinois, USA
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