December weather forecast
Auburn, IL

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Weather in December

The first month of the winter, December, is still a cold month in Auburn, Illinois, with an average temperature varying between 38.8°F (3.8°C) and 28.4°F (-2°C).

Temperature

The shift from November to December involves a decrease in the average high-temperature, from a cool 50.2°F (10.1°C) to a cold 38.8°F (3.8°C). Throughout the December nights, Auburn encounters a low-temperature of 28.4°F (-2°C).

Humidity

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

Rainfall

December is the month with the least rainfall. Rain falls for 5.5 days and accumulates 0.43" (11mm) of precipitation.

Snowfall

Months with snowfall are January through April, November and December. In Auburn, during December, snow falls for 3.9 days and regularly aggregates up to 0.47" (12mm) of snow. In Auburn, during the entire year, snow falls for 18.6 days and aggregates up to 2.68" (68mm) 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 7:01 am and sunset at 4:35 pm. On the last day of December, sunrise is at 7:19 am and sunset at 4:45 pm CST.

Sunshine

The average sunshine in December is 4.8h.

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 value of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: In December, the maximum UV index of 2 transforms into these recommendations:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. Around midday, solar radiation is most harmful; hence, exposure should be limited. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Updated: Jun 29, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold does it get in December?

Auburn in December has an average high-temperature of 38.8°F (3.8°C) and an average low-temperature of 28.4°F (-2°C). The average heat index (a.k.a. 'real feel', 'feels like'), which represents the influence of relative humidity on air temperature, in August is evaluated at 87.8°F (31°C).

What is the average humidity in December?

In December, the average relative humidity is 78%.

What is the driest month?

December is the month with the least rainfall. Rain falls for 5.5 days and accumulates 0.43" (11mm) of precipitation.

How many days does it rain in December?

In Auburn, during December, the rain falls for 5.5 days and regularly aggregates up to 0.43" (11mm) of precipitation.

How many days does it snow in December in Auburn?

In Auburn, in December, snow falls for 3.9 days, with typically accumulated 0.47" (12mm) of snow.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 24min of daylight.

How many hours of daylight does Auburn have in December?

In Auburn, the average day length in December is 9h and 26min.

What time are sunrise and sunset in December in Auburn?

In December, on the first day of the month, sunrise is at 7:01 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 4:45 pm CST.

How many hours of sunshine does Auburn have in December?

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

What are the months with the lowest UV index?

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

What is the UV index intensity in December?

In Auburn, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a low health threat 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
Auburn, IL

Average temperature in December - Auburn, IL
  • Average high temperature in December: 38.8°F

The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (33.6°F).

  • Average low temperature in December: 28.4°F

The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (21.4°F).

Average pressure in December
Auburn, IL

Average pressure in December - Auburn, 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 (29.91"Hg).

Average wind speed in December
Auburn, IL

Average wind speed in December - Auburn, IL
  • Average wind speed in December: 9.8mph

The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest month (with the lowest average wind speed) is July (6.1mph).

Average humidity in December
Auburn, IL

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

The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (70%).

Average rainfall in December
Auburn, IL

Average rainfall in December - Auburn, IL
  • Average rainfall in December: 0.43"

The wettest month (with the highest rainfall) is June (1.22").
The driest month (with the least rainfall) is December (0.43").

Average rainfall days in December
Auburn, IL

Average rainfall days in December - Auburn, IL
  • Average rainfall days in December: 5.5 days

The month with the highest number of rainy days is May (12.5 days).
The month with the least rainy days is January (4.4 days).

Average snowfall in December
Auburn, IL

Average snowfall in December - Auburn, IL
  • Average snowfall in December: 0.47"

The month with the highest snowfall is February (0.91").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in December
Auburn, IL

Average snowfall days in December - Auburn, IL
  • Average snowfall days in December: 3.9 days

The month with the highest number of snowfall days is January (5.7 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
Auburn, IL

Average daylight in December / Average sunshine in December - Auburn, IL
  • Average daylight in December: 9h and 2min

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 24min).

  • Average sunshine in December: 4h and 5min

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
Auburn, IL

Average sunshine days in December - Auburn, IL
  • Average sunshine days in December: 22.6 days

The month with the most sunshine days is December (22.6 days).
The month with the least sunshine days is June (14 days).

Average UV index in December
Auburn, IL

Average UV index in December - Auburn, 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
Auburn, IL

Average cloud cover in December - Auburn, IL
  • Average cloud cover in December: 50

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

Average visibility in December
Auburn, IL

Average visibility in December - Auburn, 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).

Auburn, Illinois, USA

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