December weather forecast
Augusta, IL

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Weather in December

December, the first month of the winter in Augusta, is still a cold month, with an average temperature ranging between min 25.9°F (-3.4°C) and max 37°F (2.8°C).

Temperature

December ushers in a slight temperature change, with average high-temperatures reducing from November's frosty 49.1°F (9.5°C) to a wintry 37°F (2.8°C). During the month of December, Augusta's nighttime temperature lowers to an average of 25.9°F (-3.4°C).

Humidity

The average relative humidity in December in Augusta is 79%.

Rainfall

December is the month with the least rainfall. Rain falls for 4.3 days and accumulates 0.35" (9mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall. In Augusta, Illinois, in December, during 3.7 snowfall days, 0.24" (6mm) of snow is typically accumulated. Throughout the year, there are 20.5 snowfall days, and 2.44" (62mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9h and 24min of daylight.
On the first day of December, sunrise is at 7:07 am and sunset at 4:38 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 4:48 pm CST.

Sunshine

In Augusta, the average sunshine in December is 4.6h.

UV index

The average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: The maximum daily UV index of 2 in December interprets into the following recommendations:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Updated: Aug 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in December?

In Augusta, in December, the average high-temperature is 37°F (2.8°C), and the average low-temperature is 25.9°F (-3.4°C). In August, the average heat index (a.k.a. 'apparent temperature', 'feels like'), which calculates the temperature value influenced by the moisture in the air, is appraised at 87.8°F (31°C).

What is the average humidity in December?

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

What is the driest month in Augusta?

December is the month with the least rainfall in Augusta. Rain falls for 4.3 days and accumulates 0.35" (9mm) of precipitation.

How much does it rain in December?

In Augusta, during December, the rain falls for 4.3 days and regularly aggregates up to 0.35" (9mm) of precipitation.

How many days does it snow in December?

In Augusta, in December, during 3.7 snowfall days, 0.24" (6mm) of snow is typically accumulated.

What is the month with the shortest days?

With an average of 9h and 24min of daylight, December has the shortest days of the year.

What is the average length of the day in December?

In December, the average day length is 9h and 22min.

What time are sunrise and sunset in December?

On the first day of December, sunrise is at 7:07 am and sunset at 4:38 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 4:48 pm CST.

How long on average sun shines in December?

The average sunshine duration in December is 4.6h.

What is the UV index intensity in December?

In Augusta, the average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a low health risk 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
Augusta, IL

Average temperature in December - Augusta, IL
  • Average high temperature in December: 37°F

The warmest month (with the highest average high temperature) is July (82.6°F).
The month with the lowest average high temperature is January (31.1°F).

  • Average low temperature in December: 25.9°F

The month with the highest average low temperature is July (66.2°F).
The coldest month (with the lowest average low temperature) is January (19°F).

Average pressure in December
Augusta, IL

Average pressure in December - Augusta, IL
  • Average pressure in December: 30.12"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in December
Augusta, IL

Average wind speed in December - Augusta, IL
  • Average wind speed in December: 9.9mph

The windiest month (with the highest average wind speed) is January (10.5mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).

Average humidity in December
Augusta, IL

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

The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (71%).

Average rainfall in December
Augusta, IL

Average rainfall in December - Augusta, IL
  • Average rainfall in December: 0.35"

The wettest month (with the highest rainfall) is May (1.1").
The driest month (with the least rainfall) is December (0.35").

Average rainfall days in December
Augusta, IL

Average rainfall days in December - Augusta, IL
  • Average rainfall days in December: 4.3 days

The month with the highest number of rainy days is May (12.3 days).
The month with the least rainy days is January (3.3 days).

Average snowfall in December
Augusta, IL

Average snowfall in December - Augusta, IL
  • Average snowfall in December: 0.24"

The month with the highest snowfall is January (0.67").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in December
Augusta, IL

Average snowfall days in December - Augusta, IL
  • Average snowfall days in December: 3.7 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
Augusta, IL

Average daylight in December / Average sunshine in December - Augusta, 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 24min).

  • Average sunshine in December: 4h and 4min

The months with the most sunshine are June and July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

Average sunshine days in December
Augusta, IL

Average sunshine days in December - Augusta, IL
  • Average sunshine days in December: 23.5 days

The month with the most sunshine days is December (23.5 days).
The month with the least sunshine days is June (13.9 days).

Average UV index in December
Augusta, IL

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

The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).

Average cloud cover in December
Augusta, IL

Average cloud cover in December - Augusta, IL
  • Average cloud cover in December: 51

The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 29).

Average visibility in December
Augusta, IL

Average visibility in December - Augusta, 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).

Augusta, Illinois, USA

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