December weather forecast and climate
Johnson City, TN

The front entrance to the Public Library in Johnson City, Tennessee, with flags flying on either side of the main entrance
The front entrance to the Public Library in Johnson City, Tennessee, with flags flying on either side of the main entrance
The first month of the winter, December, is also a chilly month in Johnson City, Tennessee, with average temperature ranging between max. 48°F (8.9°C) and min. 28°F (-2.2°C).

Temperature

The average high-temperature, in December, is 48°F (8.9°C), while the average low-temperature is 28°F (-2.2°C).

Humidity

In December, the average relative humidity is 69.5%.

Rainfall

In Johnson City, 3.6" (91.9mm) of precipitation is typically accumulated. Throughout the year, in Johnson City, 45.2" (1148.6mm) of rain is accumulated.

Snowfall

Months with snowfall are January through April, November and December.

Daylight

December has the shortest days of the year, with an average of 9.7h of daylight.

What is the temperature in December in Johnson City?

The average high-temperature, in December, in Johnson City, is 48°F (8.9°C), while the average low-temperature is 28°F (-2.2°C).

What is the average humidity in December in Johnson City?

In December, the average relative humidity in Johnson City, Tennessee, is 69.5%.

How much does it rain in Johnson City in December?

During December, Johnson City regularly aggregates up to 3.6" (91.9mm) of precipitation.

How much does it snow in Johnson City in December?

During December, Johnson City regularly aggregates up to 2.6" (66mm) of snow.

What is the month with the shortest days in Johnson City?

With an average of 9.7h of daylight, December has the shortest days of the year in Johnson City, Tennessee.

What is the average length of the day in December in Johnson City?

The average length of the day in December is 9.7h.
Average temperature in December - Johnson City, TN
  • Average high temperature in December: 48°F

The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is January (45°F).

  • Average low temperature in December: 28°F

The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (25°F).

Average humidity in December - Johnson City, TN
  • Average humidity in December: 69.5%

Months with the highest relative humidity are August and September (76.5%).
The month with the lowest relative humidity is January (59%).

Average rainfall in December - Johnson City, TN
  • Average rainfall in December: 3.6"

The wettest month (with the highest rainfall) is July (5.4").
The driest month (with the lowest rainfall) is October (2.4").

Average snowfall in December - Johnson City, TN
  • Average snowfall in December: 2.6"

The month with the highest snowfall is January (5.2").
Months with the lowest snowfall are May, June, July, August, September and October (0").

Average daylight in December - Johnson City, TN
  • Average daylight in December: 9.7h

The month with the longest days is June (Average daylight: 14.6h).
The month with shortest days is December (Average daylight: 9.7h).

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