December weather forecast
Mount Carmel, IL

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Weather in December

The first month of the winter, December, is also a frosty month in Mount Carmel, Illinois, with an average temperature ranging between min 31.3°F (-0.4°C) and max 42.8°F (6°C).

Temperature

Mount Carmel, Illinois, in December demonstrates a small temperature transition, adjusting from an average high of a fresh 52.9°F (11.6°C) in November to a chilly 42.8°F (6°C). Mount Carmel, during the month of December, experiences an average low-temperature of 31.3°F (-0.4°C).

Humidity

In Mount Carmel, the average relative humidity in December is 78%.

Rainfall

In Mount Carmel, during December, the rain falls for 10.3 days and regularly aggregates up to 2.6" (66mm) of precipitation. Throughout the year, there are 155.6 rainfall days, and 34.65" (880mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Mount Carmel are January through April, November and December. In Mount Carmel, Illinois, in December, during 4.2 snowfall days, 1.14" (29mm) of snow is typically accumulated. In Mount Carmel, during the entire year, snow falls for 21 days and aggregates up to 5.39" (137mm) of snow.

Daylight

With an average of 9h and 30min of daylight, December has the shortest days of the year in Mount Carmel, Illinois.
On the first day of the month, sunrise is at 6:49 am and sunset at 4:30 pm. On the last day of December, sunrise is at 7:08 am and sunset at 4:40 pm CST.

Sunshine

In Mount Carmel, Illinois, the average sunshine in December is 4.6h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Mount Carmel, Illinois. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: The UV index of 2 during December translates into the following guidance:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in Mount Carmel in December?

The average high-temperature and low-temperature in Mount Carmel during December are 42.8°F (6°C) and 31.3°F (-0.4°C) respectively. In August, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is evaluated at 91.4°F (33°C).

What is the average humidity in December in Mount Carmel?

The average relative humidity in December in Mount Carmel, Illinois, is 78%.

How much does it rain in Mount Carmel in December?

In Mount Carmel, Illinois, in December, during 10.3 rainfall days, 2.6" (66mm) of precipitation is typically accumulated.

How much does it snow in Mount Carmel in December?

In Mount Carmel, in December, snow falls for 4.2 days, with typically accumulated 1.14" (29mm) of snow.

What is the month with the shortest days in Mount Carmel?

December has the shortest days of the year in Mount Carmel, with an average of 9h and 30min of daylight.

What is the average length of the day in December in Mount Carmel?

The average day length in December in Mount Carmel, Illinois, is 9h and 32min.

When are sunrise and sunset in December in Mount Carmel?

In December, on the first day of the month, sunrise is at 6:49 am and sunset at 4:30 pm. On the last day of the month, in Mount Carmel, Illinois, sunrise is at 7:08 am and sunset at 4:40 pm CST.

How long on average sun shines in December in Mount Carmel?

In December, the average sunshine duration in Mount Carmel, Illinois, is 4.6h.

What are the months with the lowest UV index in Mount Carmel?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Mount Carmel, Illinois.

What is the UV index reading in December in Mount Carmel?

In Mount Carmel, Illinois, the average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a low health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Mount Carmel, IL

Average temperature in December - Mount Carmel, IL
  • Average high temperature in December: 42.8°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (37.9°F).

  • Average low temperature in December: 31.3°F

The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).

Average pressure in December
Mount Carmel, IL

Average pressure in December - Mount Carmel, IL
  • Average pressure in December: 30.14"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in December
Mount Carmel, IL

Average wind speed in December - Mount Carmel, IL
  • Average wind speed in December: 9.4mph

The windiest month (with the highest average wind speed) is February (10.1mph).
The calmest month (with the lowest average wind speed) is July (5.9mph).

Average humidity in December
Mount Carmel, IL

Average humidity in December - Mount Carmel, IL
  • Average humidity in December: 78%

The months with the highest relative humidity are May and July (80%).
The month with the lowest relative humidity is October (70%).

Average rainfall in December
Mount Carmel, IL

Average rainfall in December - Mount Carmel, IL
  • Average rainfall in December: 2.6"

The wettest month (with the highest rainfall) is April (4.72").
The driest month (with the least rainfall) is September (1.85").

Average rainfall days in December
Mount Carmel, IL

Average rainfall days in December - Mount Carmel, IL
  • Average rainfall days in December: 10.3 days

The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is January (9.4 days).

Average snowfall in December
Mount Carmel, IL

Average snowfall in December - Mount Carmel, IL
  • Average snowfall in December: 1.14"

The month with the highest snowfall is January (1.46").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in December
Mount Carmel, IL

Average snowfall days in December - Mount Carmel, IL
  • Average snowfall days in December: 4.2 days

The month with the highest number of snowfall days is January (6.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in December /
Average sunshine in December
Mount Carmel, IL

Average daylight in December / Average sunshine in December - Mount Carmel, IL
  • Average daylight in December: 9h and 3min

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 4min

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).

Average sunshine days in December
Mount Carmel, IL

Average sunshine days in December - Mount Carmel, IL
  • Average sunshine days in December: 16.6 days

The month with the most sunshine days is October (18.5 days).
The month with the least sunshine days is May (10.3 days).

Average UV index in December
Mount Carmel, IL

Average UV index in December - Mount Carmel, 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, November and December (UV index 2).

Average cloud cover in December
Mount Carmel, IL

Average cloud cover in December - Mount Carmel, IL
  • Average cloud cover in December: 51

The month with the most cloud cover is January (Cloud cover 53).
The months with the least cloud cover are June and August (Cloud cover 28).

Average visibility in December
Mount Carmel, IL

Average visibility in December - Mount Carmel, 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).

Mount Carmel, Illinois, USA

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