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 change in temperatures is noted as November gives way to December, with average highs reducing from a frosty 49.6°F (9.8°C) to a cold 39°F (3.9°C). The low-temperature in Sidell averages to a subzero cold 28.2°F (-2.1°C) during the nights of December.Humidity
The average relative humidity in December in Sidell is 80%.Rainfall
In Sidell, in December, it is raining for 8.3 days, with typically 1.26" (32mm) of accumulated precipitation. In Sidell, during the entire year, the rain falls for 133.4 days and collects up to 19.49" (495mm) of precipitation.Snowfall
Months with snowfall in Sidell are January through April, November and December. December is the month with the most snowfall. Snow falls for 4.8 days and accumulates 1.61" (41mm) of snow.Daylight
With an average of 9h and 24min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 6:54 am and sunset at 4:26 pm. On the last day of December, in Sidell, Illinois, sunrise is at 7:12 am and sunset at 4:36 pm CST.
Sunshine
In Sidell, the average sunshine in December is 4.4h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV rays for the average person.Note: The maximum UV index of 2 during December leads to these instructions:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. Enhance your sun protection with tightly woven, yet airy clothing. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Sidell in December?
What is the average humidity in December in Sidell?
How much does it rain in Sidell in December?
When does it snow the most in Sidell?
How much does it snow in Sidell in December?
What is the month with the shortest days in Sidell?
How many hours of daylight does Sidell have in December?
When is the sunrise / sunset in December in Sidell?
How long on average sun shines in December in Sidell?
What is the month with the lowest UV index in Sidell?
How high is the UV index in December in Sidell?
Average temperature in December
Sidell, IL
- Average high temperature in December: 39°F
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (33.8°F).
- Average low temperature in December: 28.2°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (21.7°F).
Average pressure in December
Sidell, 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 (29.93"Hg).
Average wind speed in December
Sidell, IL
- Average wind speed in December: 9.5mph
The windiest months (with the highest average wind speed) are January and February (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.1mph).
Average humidity in December
Sidell, IL
- Average humidity in December: 80%
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Sidell, IL
- Average rainfall in December: 1.26"
The wettest month (with the highest rainfall) is April (2.76").
The driest month (with the least rainfall) is February (0.94").
Average rainfall days in December
Sidell, IL
- Average rainfall days in December: 8.3 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is February (6.3 days).
Average snowfall in December
Sidell, IL
- Average snowfall in December: 1.61"
The month with the highest snowfall is December (1.61").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Sidell, IL
- Average snowfall days in December: 4.8 days
The month with the highest number of snowfall days is January (6.9 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
Sidell, IL
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in December: 4h and 2min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in December
Sidell, IL
- Average sunshine days in December: 19.2 days
The month with the most sunshine days is November (20 days).
The month with the least sunshine days is May (11.3 days).
Average UV index in December
Sidell, IL
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Sidell, IL
- Average cloud cover in December: 54
The month with the most cloud cover is January (Cloud cover 56).
The months with the least cloud cover are June, August and September (Cloud cover 31).
Average visibility in December
Sidell, IL
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Sidell, Illinois, USA
Weather forecast for your location
2. Allow the app to use your location