December weather forecast
Wheeler, IL

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Weather in December

The first month of the winter, December, is also a wintry month in Wheeler, Illinois, with an average temperature varying between 29.7°F (-1.3°C) and 41.2°F (5.1°C).

Temperature

A decrease in the average high-temperature is observed during December, shifting from a cool 51.3°F (10.7°C) in November to a wintry 41.2°F (5.1°C). In December, Wheeler records an average nighttime temperature of 29.7°F (-1.3°C).

Humidity

In December, the average relative humidity is 79%.

Rainfall

In Wheeler, in December, during 10.6 rainfall days, 2.52" (64mm) of precipitation is typically accumulated. Throughout the year, there are 158.3 rainfall days, and 35.12" (892mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through April, November and December. In December, in Wheeler, it is snowing for 3.8 days. Throughout December, 1.18" (30mm) of snow is accumulated. In Wheeler, during the entire year, snow falls for 20.7 days and aggregates up to 7.13" (181mm) of snow.

Daylight

The month with the shortest days is December, with an average of 9h and 30min of daylight.
On the first day of December, sunrise is at 6:53 am and sunset at 4:31 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 4:41 pm CST.

Sunshine

The average sunshine in December is 4.5h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: In December, a daily maximum UV index of 2 leads to the following instructions:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Updated: Aug 11, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Is it cold during December?

In Wheeler, in December, the average high-temperature is 41.2°F (5.1°C), and the average low-temperature is 29.7°F (-1.3°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines relative humidity and air temperature, in August is estimated at 89.6°F (32°C).

What is the average humidity in December?

In Wheeler, the average relative humidity in December is 79%.

How much does it rain in Wheeler in December?

In Wheeler, during December, the rain falls for 10.6 days and regularly aggregates up to 2.52" (64mm) of precipitation.

How much does it snow in December?

In Wheeler, in December, snow falls for 3.8 days, with typically accumulated 1.18" (30mm) of snow.

What is the month with the shortest days?

With an average of 9h and 30min of daylight, December has the shortest days of the year.

How many hours of daylight does Wheeler have in December?

In Wheeler, the average day length in December is 9h and 29min.

When are sunrise and sunset in December?

On the first day of December, sunrise is at 6:53 am and sunset at 4:31 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 4:41 pm CST.

How many hours of sunshine does Wheeler have in December?

In December, the average sunshine duration in Wheeler is 4.5h.

When is the lowest UV index?

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

What is the UV index reading in December in Wheeler?

In December, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a low health threat from exposure to Sun's UV rays.
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
Wheeler, IL

Average temperature in December - Wheeler, IL
  • Average high temperature in December: 41.2°F

The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (36°F).

  • Average low temperature in December: 29.7°F

The month with the highest average low temperature is July (66.9°F).
The coldest month (with the lowest average low temperature) is January (23.4°F).

Average pressure in December
Wheeler, IL

Average pressure in December - Wheeler, 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 (29.93"Hg).

Average wind speed in December
Wheeler, IL

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

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 (6mph).

Average humidity in December
Wheeler, IL

Average humidity in December - Wheeler, IL
  • Average humidity in December: 79%

The months with the highest relative humidity are July and August (81%).
The month with the lowest relative humidity is October (70%).

Average rainfall in December
Wheeler, IL

Average rainfall in December - Wheeler, IL
  • Average rainfall in December: 2.52"

The wettest month (with the highest rainfall) is April (5.04").
The driest month (with the least rainfall) is September (1.89").

Average rainfall days in December
Wheeler, IL

Average rainfall days in December - Wheeler, IL
  • Average rainfall days in December: 10.6 days

The month with the highest number of rainy days is May (18.7 days).
The months with the least rainy days are January and February (9.3 days).

Average snowfall in December
Wheeler, IL

Average snowfall in December - Wheeler, IL
  • Average snowfall in December: 1.18"

The month with the highest snowfall is January (2.6").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in December
Wheeler, IL

Average snowfall days in December - Wheeler, IL
  • Average snowfall days in December: 3.8 days

The month with the highest number of snowfall days is January (6.3 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
Wheeler, IL

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

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).

  • Average sunshine in December: 4h and 3min

The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).

Average sunshine days in December
Wheeler, IL

Average sunshine days in December - Wheeler, IL
  • Average sunshine days in December: 17.8 days

The month with the most sunshine days is October (18.2 days).
The month with the least sunshine days is May (10.1 days).

Average UV index in December
Wheeler, IL

Average UV index in December - Wheeler, IL
  • Average UV index in December: 2

The months with the highest UV index are 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
Wheeler, IL

Average cloud cover in December - Wheeler, IL
  • Average cloud cover in December: 52

The month with the most cloud cover is January (Cloud cover 54).
The month with the least cloud cover is June (Cloud cover 29).

Average visibility in December
Wheeler, IL

Average visibility in December - Wheeler, 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).

Wheeler, Illinois, USA

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