December weather forecast
Shetlerville, IL

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Weather in December

December, the first month of the winter in Shetlerville, is still a chilly month, with an average temperature ranging between max 45.5°F (7.5°C) and min 33.4°F (0.8°C).

Temperature

The transition into December is accompanied by a temperature decrease, with the average high-temperature shifting from a fresh 54.5°F (12.5°C) in November to a chilly 45.5°F (7.5°C). In December, the temperature drops to an average of 33.4°F (0.8°C) at night.

Humidity

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

Rainfall

In Shetlerville, in December, it is raining for 10.8 days, with typically 2.05" (52mm) of accumulated precipitation. Throughout the year, there are 148.8 rainfall days, and 27.05" (687mm) of precipitation is accumulated.

Snowfall

January through April, November and December are months with snowfall. In December, it is snowing for 3.2 days. Throughout December, 0.51" (13mm) of snow is accumulated. In Shetlerville, during the entire year, snow falls for 15 days and aggregates up to 4.8" (122mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 36min of daylight.
On the first day of December in Shetlerville, sunrise is at 6:49 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 4:46 pm CST.

Sunshine

The average sunshine in December is 4.8h.

UV index

The months with the lowest UV index in Shetlerville are January, February and December, with an average maximum UV index of 2. 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: A daily high UV index of 2 in December leads to these guidelines:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. It's recommended to limit sun exposure when its radiation is at its peak during midday. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Updated: Jun 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in December?

During December, Shetlerville experiences an average high-temperature of 45.5°F (7.5°C) and a low-temperature of 33.4°F (0.8°C). In August, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines relative humidity and air temperature, is estimated at 95°F (35°C).

What is the average humidity in December?

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

How many days does it rain in December?

In December, the rain falls for 10.8 days. Throughout December, 2.05" (52mm) of precipitation is accumulated.

How many days does it snow in December?

In December, it is snowing for 3.2 days. Throughout December, 0.51" (13mm) of snow is accumulated.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 36min of daylight.

What is the average length of the day in December?

In December, the average day length is 9h and 38min.

When is the sunrise / sunset in December?

On the first day of December, sunrise is at 6:49 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 4:46 pm CST.

How many hours of sunshine does Shetlerville have in December?

In Shetlerville, the average sunshine duration in December is 4.8h.

What are the months with the lowest UV index?

January, February and December, with an average maximum UV index of 2, are months with the lowest UV index.

What is the UV index reading in December?

In Shetlerville, the average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's 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
Shetlerville, IL

Average temperature in December - Shetlerville, IL
  • Average high temperature in December: 45.5°F

The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is January (40.5°F).

  • Average low temperature in December: 33.4°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 (27.5°F).

Average pressure in December
Shetlerville, IL

Average pressure in December - Shetlerville, 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 (29.95"Hg).

Average wind speed in December
Shetlerville, IL

Average wind speed in December - Shetlerville, IL
  • Average wind speed in December: 8.8mph

The windiest month (with the highest average wind speed) is February (9.5mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).

Average humidity in December
Shetlerville, IL

Average humidity in December - Shetlerville, IL
  • Average humidity in December: 78%

The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is October (71%).

Average rainfall in December
Shetlerville, IL

Average rainfall in December - Shetlerville, IL
  • Average rainfall in December: 2.05"

The wettest month (with the highest rainfall) is February (3.03").
The driest month (with the least rainfall) is September (1.3").

Average rainfall days in December
Shetlerville, IL

Average rainfall days in December - Shetlerville, IL
  • Average rainfall days in December: 10.8 days

The months with the highest number of rainy days are May and July (16.3 days).
The month with the least rainy days is November (8.8 days).

Average snowfall in December
Shetlerville, IL

Average snowfall in December - Shetlerville, IL
  • Average snowfall in December: 0.51"

The month with the highest snowfall is February (1.57").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in December
Shetlerville, IL

Average snowfall days in December - Shetlerville, IL
  • Average snowfall days in December: 3.2 days

The month with the highest number of snowfall days is January (4.5 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
Shetlerville, IL

Average daylight in December / Average sunshine in December - Shetlerville, IL
  • Average daylight in December: 9h and 4min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in December: 4h and 5min

The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The months with the least sunshine are January and February (Average sunshine: 4h and 36min).

Average sunshine days in December
Shetlerville, IL

Average sunshine days in December - Shetlerville, IL
  • Average sunshine days in December: 18.2 days

The month with the most sunshine days is October (20.3 days).
The month with the least sunshine days is July (12.1 days).

Average UV index in December
Shetlerville, IL

Average UV index in December - Shetlerville, 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
Shetlerville, IL

Average cloud cover in December - Shetlerville, IL
  • Average cloud cover in December: 49

The months with the most cloud cover are January and February (Cloud cover 51).
The months with the least cloud cover are June, August and September (Cloud cover 28).

Average visibility in December
Shetlerville, IL

Average visibility in December - Shetlerville, 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).

Shetlerville, Illinois, USA

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