January weather forecast and climate
Johnson City, TN

The front entrance to the Public Library in Johnson City, Tennessee
The front entrance to the Public Library in Johnson City, Tennessee

Weather in January

January, like December, in Johnson City, Tennessee, is another cold winter month, with temperature in the range of an average low of 26.6°F (-3°C) and an average high of 41.5°F (5.3°C).

Temperature

The coldest month is January, with an average high-temperature of 41.5°F (5.3°C) and an average low-temperature of 26.6°F (-3°C).

Humidity

In Johnson City, the average relative humidity is 78%.

Rainfall

In Johnson City, during January, the rain falls for 13.8 days and regularly aggregates up to 2.6" (66mm) of precipitation. Throughout the year, in Johnson City, there are 187.8 rainfall days, and 32.76" (832mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Johnson City are January through April, October through December. In Johnson City, during 8.9 snowfall days, 3.39" (86mm) of snow is typically accumulated. Throughout the year, in Johnson City, there are 32.1 snowfall days, and 13.31" (338mm) of snow is accumulated.

Daylight

In January, the average length of the day in Johnson City is 10h.

Sunshine

The month with the least sunshine in Johnson City is January, with an average of 5h of sunshine.

UV index

Months with the lowest UV index in Johnson City are January, February and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from unsafe exposure to the UV radiation for average individuals.
Note: In January, the average maximum UV index of 2 translate into the following recommendations:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the coldest month in Johnson City?

January is the coldest month, with an average high-temperature of 41.5°F (5.3°C) and an average low-temperature of 26.6°F (-3°C).

What is the temperature in January in Johnson City?

The average high-temperature, in January, in Johnson City, Tennessee, is 41.5°F (5.3°C), while the average low-temperature is 26.6°F (-3°C).

What is the average humidity in January in Johnson City?

In January, the average relative humidity is 78%.

How much does it rain in Johnson City in January?

In Johnson City, in January, it is raining for 13.8 days, with typically 2.6" (66mm) of accumulated precipitation.

How many days does it snow in January in Johnson City?

In Johnson City, Tennessee, in January, during 8.9 snowfall days, 3.39" (86mm) of snow is typically accumulated.

How many hours of daylight does Johnson City have in January?

In January, the average length of the day in Johnson City is 10h.

What is the month with the least sunshine in Johnson City?

The month with the least sunshine in Johnson City is January, with an average of 5h of sunshine.

How long on average sun shines in January in Johnson City?

In Johnson City, the average sunshine in January is 5h.

When is the lowest UV index in Johnson City?

Months with the lowest UV index in Johnson City, Tennessee, are January, February and December, with an average maximum UV index of 2.

What is the UV index intensity in January in Johnson City?

In Johnson City, Tennessee, the average daily maximum UV index in January is 2. A UV Index reading of 2, and below, represents a low health threat from unprotected exposure to the UV radiation.

Average temperature in January
Johnson City, TN

Average temperature in January - Johnson City, TN
  • Average high temperature in January: 5.3°C

The warmest month (with the highest average high temperature) is July (28.5°C).
The month with the lowest average high temperature is January (5.3°C).

  • Average low temperature in January: -3°C

The month with the highest average low temperature is July (15.9°C).
The coldest month (with the lowest average low temperature) is January (-3°C).

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Average pressure in January
Johnson City, TN

Average pressure in January - Johnson City, TN
  • Average pressure in January: 1021mbar

The month with the highest atmospheric pressure is November (1021.3mbar).
The month with the lowest atmospheric pressure is June (1015.7mbar).

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Average wind speed in January
Johnson City, TN

Average wind speed in January - Johnson City, TN
  • Average wind speed in January: 10.3km/h

The windiest month (with the highest average wind speed) is April (10.6km/h).
The calmest month (with the lowest average wind speed) is August (5.9km/h).

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Average humidity in January
Johnson City, TN

Average humidity in January - Johnson City, TN
  • Average humidity in January: 78%

Months with the highest relative humidity are February and December (79%).
The month with the lowest relative humidity is November (75%).

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Average rainfall in January
Johnson City, TN

Average rainfall in January - Johnson City, TN
  • Average rainfall in January: 66mm

The wettest month (with the highest rainfall) is February (83mm).
The driest month (with the least rainfall) is September (45mm).

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Average rainfall days in January
Johnson City, TN

Average rainfall days in January - Johnson City, TN
  • Average rainfall days in January: 13.8 days

The month with the highest number of rainy days is July (19.6 days).
The month with the least rainy days is November (11.2 days).

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Average snowfall in January
Johnson City, TN

Average snowfall in January - Johnson City, TN
  • Average snowfall in January: 86mm

The month with the highest snowfall is December (95mm).
Months with the least snowfall are May, June, July, August and September (0mm).

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Average snowfall days in January
Johnson City, TN

Average snowfall days in January - Johnson City, TN
  • Average snowfall days in January: 8.9 days

The month with the highest number of snowfall days is January (8.9 days).
Months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in January /
Average sunshine in January
Johnson City, TN

Average daylight in January / Average sunshine in January - Johnson City, TN
  • Average daylight in January: 10h

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

  • Average sunshine in January: 5h

The month with the most sunshine is June (Average sunshine: 10.6h).
The month with the least sunshine is January (Average sunshine: 5h).

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Average sunshine days in January
Johnson City, TN

Average sunshine days in January - Johnson City, TN
  • Average sunshine days in January: 11.1 days

The month with the most sunshine days is October (16.5 days).
The month with the least sunshine days is July (8.3 days).

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Average UV index in January
Johnson City, TN

Average UV index in January - Johnson City, TN
  • Average UV index in January: 2

Months with the highest UV index are June, July and August (UV index 6).
Months with the lowest UV index are January, February and December (UV index 2).

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Average cloud cover in January
Johnson City, TN

Average cloud cover in January - Johnson City, TN
  • Average cloud cover in January: 50

The month with the most cloud cover is February (Cloud cover 52).
Months with the least cloud cover are June and August (Cloud cover 31).

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Average visibility in January
Johnson City, TN

Average visibility in January - Johnson City, TN
  • Average visibility in January: 8km

Months with the highest visibility are April, June, July, October and November (9km).
Months with the lowest visibility are January, February, March, May, August, September and December (8km).

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