December Weather in Johnson City

Last updated: March 2, 2024

The weather in Johnson City, United States, during December is characterized by an average temperature of 0°C (32°F). Highs can soar to 13°C (56°F), while lows may dip to -15°C (6°F). Typically, the humidity level in Johnson City throughout December hovers around 85%.

-15°C (6°F)

Minimum temperature

0°C (32°F)

Average temperature

13°C (56°F)

Maximum temperature

85%

Humidity

Precipitation and Sunshine hours

In December, Johnson City averages 88 mm (3.5 inches) of rainfall, typically over the course of 12 rainy days. The month enjoys an average of 9 hours 8 minutes of daylight, with the sun shining for approximately 3 hours 47 minutes each day. Additionally, there is a 20% probability of sunny days during this period.

88 mm (3.5 inches)

Precipitation

12 rainy days

Rainy days

3 hours 47 minutes

Sunshine hours

20%

Chance of sun

UV Index

In December, the UV Index in Johnson City reaches a maximum of 2, indicating a level of Low exposure. The most intense UV radiation typically occurs between 10:00 and 12:00, during which unprotected skin may burn in as little as 45 minutes.

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00
UVI	0	1	1	2	2	2	2	2	1	1	0	0	0
Exposure	Low
Time to burn	45 min