December weather forecast
De Soto, IL

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Weather in December

December, the first month of the winter in De Soto, is also a frosty month, with an average temperature varying between 43.7°F (6.5°C) and 31.8°F (-0.1°C).

Temperature

December comes with a decrease in the average high-temperature, falling from a fresh 54°F (12.2°C) in November to a chilly 43.7°F (6.5°C). The month of December records an average low-temperature of 31.8°F (-0.1°C) in De Soto.

Humidity

The average relative humidity in December in De Soto is 77%.

Rainfall

In December, the rain falls for 10.3 days. Throughout December, 2.2" (56mm) of precipitation is accumulated. Throughout the year, there are 158.6 rainfall days, and 34.69" (881mm) of precipitation is accumulated.

Snowfall

January through April, October through December are months with snowfall. In December, in De Soto, Illinois, it is snowing for 3 days. Throughout December, 1.26" (32mm) of snow is accumulated. In De Soto, during the entire year, snow falls for 15.9 days and aggregates up to 5.71" (145mm) of snow.

Daylight

The month with the shortest days is December, with an average of 9h and 36min of daylight.
On the first day of December, sunrise is at 6:54 am and sunset at 4:38 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 4:48 pm CST.

Sunshine

The average sunshine in December in De Soto is 4.8h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in De Soto. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: The maximum daily UV index of 2 in December converts into the following recommendations:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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. Remember to consider! The UV radiation from the Sun can be intensified nearly twice by the reflection of snow.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is December in De Soto?

In De Soto, 43.7°F (6.5°C) is the average high-temperature and 31.8°F (-0.1°C) is the average low-temperature during December. In August, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which factors the actual air temperature with the relative humidity, is evaluated at 96.8°F (36°C).

What is the average humidity in December in De Soto?

The average relative humidity in December is 77%.

How much does it rain in De Soto in December?

In De Soto, in December, it is raining for 10.3 days, with typically 2.2" (56mm) of accumulated precipitation.

How much does it snow in De Soto in December?

In De Soto, Illinois, in December, during 3 snowfall days, 1.26" (32mm) of snow is typically accumulated.

What is the month with the shortest days in De Soto?

The month with the shortest days in De Soto is December, with an average of 9h and 36min of daylight.

What is the average length of the day in December in De Soto?

The average day length in December in De Soto, Illinois, is 9h and 36min.

What time are sunrise and sunset in December in De Soto?

In December, on the first day of the month, sunrise is at 6:54 am and sunset at 4:38 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 4:48 pm CST.

How many hours of sunshine does De Soto have in December?

The average sunshine duration in December is 4.8h.

What is the month with the lowest UV index in De Soto?

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

What is the UV index intensity in December in De Soto?

In December, the average daily maximum UV index in De Soto, Illinois, is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability 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
De Soto, IL

Average temperature in December - De Soto, IL
  • Average high temperature in December: 43.7°F

The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (39.6°F).

  • Average low temperature in December: 31.8°F

The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (26.2°F).

Average pressure in December
De Soto, IL

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

Average wind speed in December
De Soto, IL

Average wind speed in December - De Soto, IL
  • Average wind speed in December: 8.6mph

The windiest month (with the highest average wind speed) is January (9.4mph).
The calmest month (with the lowest average wind speed) is August (5.6mph).

Average humidity in December
De Soto, IL

Average humidity in December - De Soto, IL
  • Average humidity in December: 77%

The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (71%).

Average rainfall in December
De Soto, IL

Average rainfall in December - De Soto, IL
  • Average rainfall in December: 2.2"

The wettest month (with the highest rainfall) is April (4.49").
The driest month (with the least rainfall) is September (1.85").

Average rainfall days in December
De Soto, IL

Average rainfall days in December - De Soto, IL
  • Average rainfall days in December: 10.3 days

The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is January (9.4 days).

Average snowfall in December
De Soto, IL

Average snowfall in December - De Soto, IL
  • Average snowfall in December: 1.26"

The month with the highest snowfall is February (1.73").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in December
De Soto, IL

Average snowfall days in December - De Soto, IL
  • Average snowfall days in December: 3 days

The months with the highest number of snowfall days are January and February (4.8 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
De Soto, IL

Average daylight in December / Average sunshine in December - De Soto, 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 month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).

Average sunshine days in December
De Soto, IL

Average sunshine days in December - De Soto, IL
  • Average sunshine days in December: 18.4 days

The month with the most sunshine days is October (18.5 days).
The month with the least sunshine days is May (11.3 days).

Average UV index in December
De Soto, IL

Average UV index in December - De Soto, 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, November and December (UV index 2).

Average cloud cover in December
De Soto, IL

Average cloud cover in December - De Soto, IL
  • Average cloud cover in December: 48

The month with the most cloud cover is February (Cloud cover 50).
The months with the least cloud cover are June and August (Cloud cover 27).

Average visibility in December
De Soto, IL

Average visibility in December - De Soto, 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).

De Soto, Illinois, USA

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