December weather forecast and climate
Knoxville, AL

Weather in December

December, the first month of the winter, in Knoxville, is still a mild month, with average temperature fluctuating between 41.5°F (5.3°C) and 56.3°F (13.5°C).

Temperature

In December, the average high-temperature slightly decreases, from a comfortable 63.7°F (17.6°C) in November, to a moderate 56.3°F (13.5°C). In December, the average low-temperature is 41.5°F (5.3°C).

Humidity

With an average relative humidity of 80%, December is the most humid month in Knoxville.

Rainfall

In Knoxville, during December, the rain falls for 13.4 days and regularly aggregates up to 4.09" (104mm) of precipitation. Throughout the year, there are 166.5 rainfall days, and 39.41" (1001mm) of precipitation is accumulated.

Snowfall

January, February and December are months with snowfall in Knoxville. December is the first month it typically snows in Knoxville. Throughout December, in the average 0.5 snowfall days, it receives 0.47" (12mm) of snow. Throughout the year, in Knoxville, there are 2.3 snowfall days, and 1.26" (32mm) of snow is accumulated.

Daylight

The month with the shortest days is December, with an average of 10h of daylight.

Sunshine

February and December, with an average of 4.8h of sunshine, are months with the least sunshine in Knoxville.

UV index

January, February and December, with an average maximum UV index of 3, are months with the lowest UV index in Knoxville. A UV Index estimate of 3 to 5 represents a moderate threat to health from the exposure to the Sun's UV radiation for the average person.
Note: The average daily UV index of 3 in December transform into the following instructions:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the temperature in December in Knoxville?

In Knoxville, in December, the average high-temperature is 56.3°F (13.5°C), and the average low-temperature is 41.5°F (5.3°C).

What is the most humid month in Knoxville?

December is the most humid month, with an average relative humidity of 80%.

What is the average humidity in December in Knoxville?

The average relative humidity in December in Knoxville is 80%.

How much does it rain in Knoxville in December?

In Knoxville, Alabama, in December, it is raining for 13.4 days, with typically 4.09" (104mm) of accumulated precipitation.

When does it start to snow in Knoxville?

December is the first month it typically snows in Knoxville. Throughout December, in the average 0.5 snowfall days, it receives 0.47" (12mm) of snow.

What is the month with the shortest days in Knoxville?

The month with the shortest days in Knoxville is December, with an average of 10h of daylight.

How many hours of daylight does Knoxville have in December?

In December, the average length of the day in Knoxville is 10h.

What is the month with the least sunshine in Knoxville?

Months with the least sunshine are February and December, with an average of 4.8h of sunshine.

How long on average sun shines in December in Knoxville?

In December, the average sunshine in Knoxville, Alabama, is 4.8h.

What are the months with the lowest UV index in Knoxville?

January, February and December, with an average maximum UV index of 3, are months with the lowest UV index in Knoxville, Alabama.

How high is the UV index in December in Knoxville?

In Knoxville, the average daily maximum UV index in December is 3. A UV Index of 3 to 5 symbolizes a medium health risk from unsafe exposure to the Sun's UV rays.

Average temperature in December
Knoxville, AL

Average temperature in December - Knoxville, AL
  • Average high temperature in December: 56.3°F

The warmest month (with the highest average high temperature) is July (91.9°F).
The month with the lowest average high temperature is January (52.9°F).

  • Average low temperature in December: 41.5°F

Months with the highest average low temperature are July and August (71.6°F).
The coldest month (with the lowest average low temperature) is January (37.4°F).

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Average pressure in December
Knoxville, AL

Average pressure in December - Knoxville, AL
  • Average pressure in December: 30.14"

The month with the highest atmospheric pressure is January (30.16").
The month with the lowest atmospheric pressure is June (29.97").

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Average wind speed in December
Knoxville, AL

Average wind speed in December - Knoxville, AL
  • Average wind speed in December: 6.8mph

The windiest month (with the highest average wind speed) is February (7.2mph).
The calmest month (with the lowest average wind speed) is August (4.5mph).

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Average humidity in December
Knoxville, AL

Average humidity in December - Knoxville, AL
  • Average humidity in December: 80%

The month with the highest relative humidity is December (80%).
The month with the lowest relative humidity is October (69%).

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Average rainfall in December
Knoxville, AL

Average rainfall in December - Knoxville, AL
  • Average rainfall in December: 4.09"

The wettest month (with the highest rainfall) is April (4.29").
The driest month (with the least rainfall) is October (2.28").

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Average rainfall days in December
Knoxville, AL

Average rainfall days in December - Knoxville, AL
  • Average rainfall days in December: 13.4 days

The month with the highest number of rainy days is July (20.6 days).
The month with the least rainy days is November (8.5 days).

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Average snowfall in December
Knoxville, AL

Average snowfall in December - Knoxville, AL
  • Average snowfall in December: 0.47"

The month with the highest snowfall is January (0.55").
Months with the least snowfall are March, April, May, June, July, August, September, October and November (0").

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Average snowfall days in December
Knoxville, AL

Average snowfall days in December - Knoxville, AL
  • Average snowfall days in December: 0.5 days

Months with the highest number of snowfall days are January and February (0.8 days).
Months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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Average daylight in December /
Average sunshine in December
Knoxville, AL

Average daylight in December / Average sunshine in December - Knoxville, AL
  • Average daylight in December: 10h

The month with the longest days is June (Average daylight: 14.3h).
The month with the shortest days is December (Average daylight: 10h).

  • Average sunshine in December: 4.8h

The month with the most sunshine is June (Average sunshine: 10.5h).
Months with the least sunshine are February and December (Average sunshine: 4.8).

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Average sunshine days in December
Knoxville, AL

Average sunshine days in December - Knoxville, AL
  • Average sunshine days in December: 15.7 days

The month with the most sunshine days is October (20.5 days).
The month with the least sunshine days is July (8.8 days).

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Average UV index in December
Knoxville, AL

Average UV index in December - Knoxville, AL
  • Average UV index in December: 3

Months with the highest UV index are June, July and August (UV index 7).
Months with the lowest UV index are January, February and December (UV index 3).

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Average cloud cover in December
Knoxville, AL

Average cloud cover in December - Knoxville, AL
  • Average cloud cover in December: 48

Months with the most cloud cover are February and December (Cloud cover 48).
The month with the least cloud cover is September (Cloud cover 29).

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Average visibility in December
Knoxville, AL

Average visibility in December - Knoxville, AL
  • Average visibility in December: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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