December weather forecast
Muddy, IL

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Weather in December

December, the first month of the winter in Muddy, is also a frosty month, with an average temperature varying between 32.4°F (0.2°C) and 44.1°F (6.7°C).

Temperature

Stepping into December, Muddy observes a temperature decline, with the average high falling from November's fresh 53.8°F (12.1°C) to a frosty 44.1°F (6.7°C). Muddy records a mean low-temperature of 32.4°F (0.2°C) in December.

Humidity

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

Rainfall

In Muddy, in December, it is raining for 10.3 days, with typically 2.8" (71mm) of accumulated precipitation. Throughout the year, in Muddy, there are 158.6 rainfall days, and 36.02" (915mm) of precipitation is accumulated.

Snowfall

January through April, October through December are months with snowfall in Muddy. In December, in Muddy, it is snowing for 3.6 days. Throughout December, 1.18" (30mm) of snow is accumulated. Throughout the year, there are 17.7 snowfall days, and 6.57" (167mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 9h and 36min of daylight.
On the first day of the month, sunrise is at 6:51 am and sunset at 4:35 pm. On the last day of December, in Muddy, sunrise is at 7:09 am and sunset at 4:45 pm CST.

Sunshine

In Muddy, the average sunshine in December is 4.7h.

UV index

January, February and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: The UV index of 2 during December leads to these advisories:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. When the Sun is at its strongest around midday, find shade and limit exposure. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold is it in Muddy in December?

December temperatures in Muddy vary between a high-temperature of 44.1°F (6.7°C) and a low-temperature of 32.4°F (0.2°C). The average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines air temperature and relative humidity, in September is appraised at 84.2°F (29°C).

What is the average humidity in December in Muddy?

The average relative humidity in December is 78%.

How much does it rain in Muddy in December?

In Muddy, Illinois, during December, the rain falls for 10.3 days and regularly aggregates up to 2.8" (71mm) of precipitation.

How many days does it snow in December in Muddy?

In Muddy, Illinois, in December, snow falls for 3.6 days, with typically accumulated 1.18" (30mm) of snow.

What is the month with the shortest days in Muddy?

With an average of 9h and 36min of daylight, December has the shortest days of the year in Muddy.

How many hours of daylight does Muddy have in December?

The average day length in December in Muddy is 9h and 36min.

When is the sunrise / sunset in December in Muddy?

On the first day of December, sunrise is at 6:51 am and sunset at 4:35 pm. On the last day of the month, sunrise is at 7:09 am and sunset at 4:45 pm CST.

How many hours of sunshine does Muddy have in December?

The average sunshine duration in December in Muddy is 4.7h.

What is the month with the lowest UV index in Muddy?

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

What is the UV index reading in December in Muddy?

The average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a minimal hazard to health from unprotected exposure to 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
Muddy, IL

Average temperature in December - Muddy, IL
  • Average high temperature in December: 44.1°F

The warmest month (with the highest average high temperature) is July (87.3°F).
The month with the lowest average high temperature is January (39.7°F).

  • Average low temperature in December: 32.4°F

The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (26.2°F).

Average pressure in December
Muddy, IL

Average pressure in December - Muddy, 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 (29.94"Hg).

Average wind speed in December
Muddy, IL

Average wind speed in December - Muddy, IL
  • Average wind speed in December: 8.8mph

The windiest months (with the highest average wind speed) are January and February (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).

Average humidity in December
Muddy, IL

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

The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is October (70%).

Average rainfall in December
Muddy, IL

Average rainfall in December - Muddy, IL
  • Average rainfall in December: 2.8"

The wettest month (with the highest rainfall) is April (4.8").
The driest month (with the least rainfall) is September (1.57").

Average rainfall days in December
Muddy, IL

Average rainfall days in December - Muddy, IL
  • Average rainfall days in December: 10.3 days

The month with the highest number of rainy days is May (18.5 days).
The month with the least rainy days is November (9.7 days).

Average snowfall in December
Muddy, IL

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

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

Average snowfall days in December
Muddy, IL

Average snowfall days in December - Muddy, IL
  • Average snowfall days in December: 3.6 days

The month with the highest number of snowfall days is January (5.3 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
Muddy, IL

Average daylight in December / Average sunshine in December - Muddy, 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 4min

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 36min).

Average sunshine days in December
Muddy, IL

Average sunshine days in December - Muddy, IL
  • Average sunshine days in December: 16.9 days

The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is May (9.9 days).

Average UV index in December
Muddy, IL

Average UV index in December - Muddy, 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 and December (UV index 2).

Average cloud cover in December
Muddy, IL

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

The months with the most cloud cover are January and February (Cloud cover 51).
The months with the least cloud cover are June and September (Cloud cover 28).

Average visibility in December
Muddy, IL

Average visibility in December - Muddy, 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).

Muddy, Illinois, USA

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