December weather forecast
Andalusia, IL

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Weather in December

The first month of the winter, December, is also a wintry month in Andalusia, Illinois, with an average temperature fluctuating between 24.1°F (-4.4°C) and 34.5°F (1.4°C).

Temperature

Andalusia in December experiences a subtle temperature decline, with average high-temperatures reducing from a frosty 47.1°F (8.4°C) in November to an icy 34.5°F (1.4°C). During the nights in December, Andalusia experiences a consistent average temperature of 24.1°F (-4.4°C).

Humidity

The average relative humidity in December is 81%.

Rainfall

December is the month with the least rainfall in Andalusia. Rain falls for 6.6 days and accumulates 0.75" (19mm) of precipitation.

Snowfall

Months with snowfall are January through April, October through December. In Andalusia, in December, snow falls for 7.8 days, with typically accumulated 1.42" (36mm) of snow. Throughout the year, there are 35.4 snowfall days, and 8.35" (212mm) of snow is accumulated.

Daylight

With an average of 9h and 12min of daylight, December has the shortest days of the year in Andalusia.
On the first day of the month, sunrise is at 7:10 am and sunset at 4:34 pm. On the last day of December, in Andalusia, sunrise is at 7:28 am and sunset at 4:43 pm CST.

Sunshine

In December, the average sunshine in Andalusia is 4.4h.

UV index

In December, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.
Note: In December, the maximum UV index of 2 suggests this advice:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Opt for tightly woven and loose clothing to enhance protection from the Sun. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
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Frequently asked questions

How cold is it in Andalusia in December?

The high-temperature during December is 34.5°F (1.4°C) and the low-temperature is 24.1°F (-4.4°C). In August, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines air temperature and relative humidity, is evaluated at 86°F (30°C).

What is the average humidity in December in Andalusia?

In December, the average relative humidity in Andalusia is 81%.

What is the driest month in Andalusia?

The month with the least rainfall in Andalusia, Illinois, is December, when the rain falls for 6.6 days and typically collects 0.75" (19mm) of precipitation.

How much does it rain in Andalusia in December?

In December, the rain falls for 6.6 days. Throughout December, 0.75" (19mm) of precipitation is accumulated.

How many days does it snow in December in Andalusia?

In December, in Andalusia, Illinois, it is snowing for 7.8 days. Throughout December, 1.42" (36mm) of snow is accumulated.

What is the month with the shortest days in Andalusia?

December has the shortest days of the year in Andalusia, Illinois, with an average of 9h and 12min of daylight.

How many hours of daylight does Andalusia have in December?

The average day length in December in Andalusia, Illinois, is 9h and 14min.

When is the sunrise / sunset in December in Andalusia?

On the first day of December, sunrise is at 7:10 am and sunset at 4:34 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 4:43 pm CST.

How many hours of sunshine does Andalusia have in December?

The average sunshine duration in December in Andalusia, Illinois, is 4.4h.

What is the UV index reading in December in Andalusia?

In Andalusia, the average daily maximum UV index in December is 2. A UV Index reading 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
Andalusia, IL

Average temperature in December - Andalusia, IL
  • Average high temperature in December: 34.5°F

The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is January (28.2°F).

  • Average low temperature in December: 24.1°F

The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).

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Average pressure in December
Andalusia, IL

Average pressure in December - Andalusia, IL
  • Average pressure in December: 30.11"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

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Average wind speed in December
Andalusia, IL

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

The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.7mph).

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Average humidity in December
Andalusia, IL

Average humidity in December - Andalusia, IL
  • Average humidity in December: 81%

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

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Average rainfall in December
Andalusia, IL

Average rainfall in December - Andalusia, IL
  • Average rainfall in December: 0.75"

The wettest month (with the highest rainfall) is May (3.31").
The driest month (with the least rainfall) is December (0.75").

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Average rainfall days in December
Andalusia, IL

Average rainfall days in December - Andalusia, IL
  • Average rainfall days in December: 6.6 days

The month with the highest number of rainy days is June (17 days).
The month with the least rainy days is January (4.2 days).

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Average snowfall in December
Andalusia, IL

Average snowfall in December - Andalusia, IL
  • Average snowfall in December: 1.42"

The month with the highest snowfall is February (2.52").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in December
Andalusia, IL

Average snowfall days in December - Andalusia, IL
  • Average snowfall days in December: 7.8 days

The month with the highest number of snowfall days is January (10.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in December /
Average sunshine in December
Andalusia, IL

Average daylight in December / Average sunshine in December - Andalusia, IL
  • Average daylight in December: 9h and 1min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in December: 4h and 2min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).

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Average sunshine days in December
Andalusia, IL

Average sunshine days in December - Andalusia, IL
  • Average sunshine days in December: 18.6 days

The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is June (10.8 days).

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Average UV index in December
Andalusia, IL

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

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

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Average cloud cover in December
Andalusia, IL

Average cloud cover in December - Andalusia, IL
  • Average cloud cover in December: 54

The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 29).

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Average visibility in December
Andalusia, IL

Average visibility in December - Andalusia, 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).

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Andalusia, Illinois, USA

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