December weather forecastAlorton, IL
December
Weather in December
December, the first month of the winter in Alorton, is also a frosty month, with an average temperature varying between 42.8°F (6°C) and 30.6°F (-0.8°C).Temperature
During the transition into December, Alorton observes a decrease in the average high-temperature, falling from a fresh 53.2°F (11.8°C) in November to a chilly 42.8°F (6°C). Throughout December, Alorton encounters an average temperature drop to a freezing cold 30.6°F (-0.8°C).Humidity
In December, the average relative humidity is 76%.Rainfall
In Alorton, Illinois, during December, the rain falls for 8.4 days and regularly aggregates up to 2.4" (61mm) of precipitation. Throughout the year, there are 152.2 rainfall days, and 36.46" (926mm) of precipitation is accumulated.Snowfall
January through March, November and December are months with snowfall in Alorton. In Alorton, in December, during 4 snowfall days, 1.5" (38mm) of snow is typically accumulated. Throughout the year, in Alorton, there are 20.2 snowfall days, and 7.44" (189mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 6:59 am and sunset at 4:39 pm. On the last day of December, sunrise is at 7:18 am and sunset at 4:49 pm CST.
Sunshine
The average sunshine in December is 4.8h.UV index
January, February and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV rays for ordinary individuals.Note: The daily maximum UV index of 2 in December interprets into the following advice:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Alorton, IL
- Average high temperature in December: 42.8°F
The warmest month (with the highest average high temperature) is July (86.4°F).
The month with the lowest average high temperature is January (37.8°F).
- Average low temperature in December: 30.6°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (24.6°F).
Average pressure in December
Alorton, IL
- Average pressure in December: 30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in December
Alorton, IL
- Average wind speed in December: 8.6mph
The windiest month (with the highest average wind speed) is January (9.3mph).
The calmest month (with the lowest average wind speed) is July (5.5mph).
Average humidity in December
Alorton, IL
- Average humidity in December: 76%
The months with the highest relative humidity are May and July (78%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Alorton, IL
- Average rainfall in December: 2.4"
The wettest month (with the highest rainfall) is May (4.53").
The driest month (with the least rainfall) is February (2.01").
Average rainfall days in December
Alorton, IL
- Average rainfall days in December: 8.4 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (7.7 days).
Average snowfall in December
Alorton, IL
- Average snowfall in December: 1.5"
The month with the highest snowfall is February (2.44").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Alorton, IL
- Average snowfall days in December: 4 days
The month with the highest number of snowfall days is January (6.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Alorton, IL
- Average daylight in December: 9h and 30min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 4h and 48min
The months with the most sunshine are June and July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days in December
Alorton, IL
- Average sunshine days in December: 18.4 days
The month with the most sunshine days is October (18.7 days).
The month with the least sunshine days is May (10.7 days).
Average UV index in December
Alorton, IL
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover in December
Alorton, IL
- Average cloud cover in December: 49
The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility in December
Alorton, IL
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
