January weather forecast
Johnson City, TN

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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

Johnson City experiences a frosty start to the year, with temperatures typically dropping to 26.6°F. The city frequently sees snowfall during January, with the grounds often adorned in a beautiful white blanket. Weather fluctuations are expected, so it’s advisable to keep warm clothing at hand. Crisp wisps of winter wind keep the environment invigorating and crackling. The length of the day begins to increase, gradually setting the stage for the oncoming spring.

Temperature

In Johnson City, the month of January registers the lowest temperatures, averaging 41.5°F at the peak and 26.6°F at the lowest.

Humidity

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

Rainfall

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

Snowfall

Months with snowfall in Johnson City are January through April, October through December. In January, in Johnson City, Tennessee, it is snowing for 8.9 days. Throughout January, 3.39" of snow is accumulated. Throughout the year, there are 32.1 snowfall days, and 13.31" of snow is accumulated.

Daylight

In Johnson City, the average length of the day in January is 10h and 1min.
On the first day of the month, sunrise is at 7:40 am and sunset at 5:25 pm. On the last day of January, sunrise is at 7:31 am and sunset at 5:54 pm EST.

Sunshine

January has the least sunshine of the year in Johnson City, Tennessee, with an average of 5h of sunshine.

UV index

January, February and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In January, a regular UV index of 2 translates into these guidelines:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. During bright days, sunglasses that offer UVA and UVB defense are recommended. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
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FAQ

What time of the year is the coldest in Johnson City?

In Johnson City, January registers the lowest temperatures, averaging 41.5°F at the peak and 26.6°F at the lowest.

Is it cold in Johnson City during January?

During January, Johnson City experiences an average high-temperature of 41.5°F and a low-temperature of 26.6°F.

What is the average humidity in January in Johnson City?

The average relative humidity in January in Johnson City, Tennessee, is 78%.

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

In Johnson City, Tennessee, in January, during 13.8 rainfall days, 2.6" of precipitation is typically accumulated.

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

In January, in Johnson City, Tennessee, it is snowing for 8.9 days. Throughout January, 3.39" of snow is accumulated.

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

In Johnson City, Tennessee, the average day length in January is 10h and 1min.

When is the sunrise / sunset in January in Johnson City?

In January, on the first day of the month, sunrise is at 7:40 am and sunset at 5:25 pm. On the last day of the month, in Johnson City, Tennessee, sunrise is at 7:31 am and sunset at 5:54 pm EST.

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

With an average of 5h of sunshine, January has the least sunshine of the year.

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

The average sunshine duration in January in Johnson City is 5h.

When is the lowest UV index in Johnson City?

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

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

In Johnson City, Tennessee, the average daily maximum UV index in January is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation.
Average high temperature
Average low temperature
Average pressure
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Johnson City, TN

Average temperature in January - Johnson City, TN
  • Average high temperature in January: 41.5°F

The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (41.5°F).

  • Average low temperature in January: 26.6°F

The month with the highest average low temperature is July (60.6°F).
The coldest month (with the lowest average low temperature) is January (26.6°F).

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Average pressure in January
Johnson City, TN

Average pressure in January - Johnson City, TN
  • Average pressure in January: 30.15"Hg

The month with the highest atmospheric pressure is November (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.99"Hg).

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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: 6.4mph

The windiest month (with the highest average wind speed) is April (6.6mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).

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Average humidity in January
Johnson City, TN

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

The 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: 2.6"

The wettest month (with the highest rainfall) is February (3.27").
The driest month (with the least rainfall) is September (1.77").

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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: 3.39"

The month with the highest snowfall is December (3.74").
The months with the least snowfall are May, June, July, August and September (0").

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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).
The 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 and 0min

The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).

  • Average sunshine in January: 5h and 0min

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).

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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

The months with the highest UV index are June, July and August (UV index 6).
The 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).
The 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: 5mi

The months with the highest visibility are April, June, July, October and November (6mi).
The months with the lowest visibility are January, February, March, May, August, September and December (5mi).

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Johnson City, Tennessee, USA

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