December weather forecast
Iron City, TN

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Weather in December

December, the first month of the winter in Iron City, is still a cool month, with temperature in the range of an average low of 37°F (2.8°C) and an average high of 50.2°F (10.1°C).

Temperature

December signifies a minor drop in average high-temperature, transitioning from a refreshing 58.5°F (14.7°C) in November to a fresh 50.2°F (10.1°C). Throughout December, the temperature tends to fall to a consistent average low of 37°F (2.8°C).

Humidity

March and December, with an average relative humidity of 79%, are the most humid months.

Rainfall

In Iron City, Tennessee, in December, during 12.1 rainfall days, 3.15" (80mm) of precipitation is typically accumulated. In Iron City, during the entire year, the rain falls for 164 days and collects up to 37.56" (954mm) of precipitation.

Snowfall

January through March, November and December are months with snowfall. In Iron City, in December, during 1.2 snowfall days, 0.43" (11mm) of snow is typically accumulated. In Iron City, during the entire year, snow falls for 7.7 days and aggregates up to 1.93" (49mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 48min of daylight.
On the first day of the month, sunrise is at 6:40 am and sunset at 4:38 pm. On the last day of December, sunrise is at 6:58 am and sunset at 4:49 pm CST.

Sunshine

In December, the average sunshine is 4.7h.

UV index

December is the month with the lowest UV index, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In December, the maximum UV index of 2 suggests this advice:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Updated: Jul 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average December temperature?

In December, the average high-temperature and low-temperature are 50.2°F (10.1°C) and 37°F (2.8°C) respectively. In September, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which factors the actual air temperature with the relative humidity, is computed to be 87.8°F (31°C).

What is the most humid month?

The months with the highest humidity are March and December, with an average relative humidity of 79%.

What is the average humidity in December?

The average relative humidity in December is 79%.

How many days does it rain in December?

In Iron City, Tennessee, during December, the rain falls for 12.1 days and regularly aggregates up to 3.15" (80mm) of precipitation.

How many days does it snow in December?

In December, it is snowing for 1.2 days. Throughout December, 0.43" (11mm) of snow is accumulated.

What is the month with the shortest days?

With an average of 9h and 48min 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 51min.

What time are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 6:40 am and sunset at 4:38 pm. On the last day of the month, sunrise is at 6:58 am and sunset at 4:49 pm CST.

How long on average sun shines in December?

In Iron City, the average sunshine duration in December is 4.7h.

What is the month with the lowest UV index?

With an average maximum UV index of 2, December is the month with the lowest UV index.

What is the UV index intensity in December in Iron City?

In December, the average daily maximum UV index is 2. A UV Index 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
Iron City, TN

Average temperature in December - Iron City, TN
  • Average high temperature in December: 50.2°F

The warmest month (with the highest average high temperature) is July (88.2°F).
The month with the lowest average high temperature is January (46.6°F).

  • Average low temperature in December: 37°F

The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (32.5°F).

Average pressure in December
Iron City, TN

Average pressure in December - Iron City, TN
  • Average pressure in December: 30.15"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.97"Hg).

Average wind speed in December
Iron City, TN

Average wind speed in December - Iron City, TN
  • Average wind speed in December: 8.3mph

The windiest month (with the highest average wind speed) is February (8.7mph).
The calmest month (with the lowest average wind speed) is July (4.9mph).

Average humidity in December
Iron City, TN

Average humidity in December - Iron City, TN
  • Average humidity in December: 79%

The months with the highest relative humidity are March and December (79%).
The month with the lowest relative humidity is October (73%).

Average rainfall in December
Iron City, TN

Average rainfall in December - Iron City, TN
  • Average rainfall in December: 3.15"

The wettest month (with the highest rainfall) is February (4.25").
The driest month (with the least rainfall) is November (2.32").

Average rainfall days in December
Iron City, TN

Average rainfall days in December - Iron City, TN
  • Average rainfall days in December: 12.1 days

The month with the highest number of rainy days is July (19 days).
The month with the least rainy days is November (9.3 days).

Average snowfall in December
Iron City, TN

Average snowfall in December - Iron City, TN
  • Average snowfall in December: 0.43"

The month with the highest snowfall is February (0.71").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in December
Iron City, TN

Average snowfall days in December - Iron City, TN
  • Average snowfall days in December: 1.2 days

The months with the highest number of snowfall days are January and February (2.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in December /
Average sunshine in December
Iron City, TN

Average daylight in December / Average sunshine in December - Iron City, TN
  • Average daylight in December: 9h and 5min

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).

  • Average sunshine in December: 4h and 4min

The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is February (Average sunshine: 4h and 30min).

Average sunshine days in December
Iron City, TN

Average sunshine days in December - Iron City, TN
  • Average sunshine days in December: 17 days

The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is July (9.4 days).

Average UV index in December
Iron City, TN

Average UV index in December - Iron City, TN
  • Average UV index in December: 2

The month with the highest UV index is July (UV index 7).
The month with the lowest UV index is December (UV index 2).

Average cloud cover in December
Iron City, TN

Average cloud cover in December - Iron City, TN
  • Average cloud cover in December: 50

The month with the most cloud cover is February (Cloud cover 52).
The month with the least cloud cover is June (Cloud cover 30).

Average visibility in December
Iron City, TN

Average visibility in December - Iron City, TN
  • 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).

Iron City, Tennessee, USA

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