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 moderate decline in the average high-temperature is seen during December, decreasing from a chilly 47.8°F (8.8°C) in November to a cold 36.5°F (2.5°C). An average low-temperature of 26.4°F (-3.1°C) is common during the nights of December.Humidity
The average relative humidity in December is 81%.Rainfall
In Coaler, during December, the rain falls for 7.3 days and regularly aggregates up to 1.02" (26mm) of precipitation. In Coaler, during the entire year, the rain falls for 136.7 days and collects up to 19.72" (501mm) of precipitation.Snowfall
January through April, November and December are months with snowfall in Coaler. In Coaler, in December, snow falls for 6.5 days, with typically accumulated 1.26" (32mm) of snow. Throughout the year, in Coaler, there are 32.9 snowfall days, and 9.17" (233mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 18min of daylight.On the first day of December in Coaler, sunrise is at 6:56 am and sunset at 4:24 pm. On the last day of the month, sunrise is at 7:14 am and sunset at 4:33 pm CST.
Sunshine
The average sunshine in December in Coaler is 4.3h.UV index
The month with the lowest UV index is December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index, 1 in December, converts into the following recommendations:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Stay sun-safe with clothing that is both closely woven and worn loosely. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Frequently asked questions
How cold is it in Coaler in December?
What is the average humidity in December in Coaler?
How much does it rain in Coaler in December?
How much does it snow in Coaler in December?
What is the month with the shortest days in Coaler?
What is the average length of the day in December in Coaler?
When is the sunrise / sunset in December in Coaler?
How many hours of sunshine does Coaler have in December?
When is the lowest UV index in Coaler?
How high is the UV index in December in Coaler?
Average temperature in December
Coaler, IL
- Average high temperature in December: 36.5°F
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (30.6°F).
- Average low temperature in December: 26.4°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (18.7°F).
Average pressure in December
Coaler, IL
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Coaler, IL
- Average wind speed in December: 9.7mph
The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.2mph).
Average humidity in December
Coaler, IL
- Average humidity in December: 81%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (71%).
Average rainfall in December
Coaler, IL
- Average rainfall in December: 1.02"
The wettest month (with the highest rainfall) is May (2.83").
The driest month (with the least rainfall) is February (0.98").
Average rainfall days in December
Coaler, IL
- Average rainfall days in December: 7.3 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is January (6.2 days).
Average snowfall in December
Coaler, IL
- Average snowfall in December: 1.26"
The month with the highest snowfall is January (2.56").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Coaler, IL
- Average snowfall days in December: 6.5 days
The month with the highest number of snowfall days is January (10.5 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
Coaler, 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 18min).
- Average sunshine in December: 4h and 2min
The month with the most sunshine is June (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in December
Coaler, IL
- Average sunshine days in December: 18.3 days
The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is July (10.1 days).
Average UV index in December
Coaler, IL
- Average UV index in December: 1
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Coaler, IL
- Average cloud cover in December: 56
The month with the most cloud cover is January (Cloud cover 59).
The months with the least cloud cover are August and September (Cloud cover 33).
Average visibility in December
Coaler, 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).
Coaler, Illinois, USA
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