January weather - Winter 2025

Weather in January
Frequently asked questions
Average temperature in January
Average pressure in January
Average wind speed in January
Average humidity in January
Average rainfall in January
Average rainfall days in January
Average snowfall in January
Average snowfall days in January
Average daylight in January
Average sunshine in January
Average sunshine days in January
Average UV index in January
Average cloud cover in January
Average visibility in January

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 (-3°C). 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, Tennessee, the lowest average temperatures are observed in January, with a high of 41.5°F (5.3°C) and a low of 26.6°F (-3°C).

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" (66mm) of precipitation. Throughout the year, there are 187.8 rainfall days, and 32.76" (832mm) of precipitation is accumulated.

Snowfall

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

Daylight

In January, the average length of the day is 10h and 1min.
On the first day of the month, sunrise is at 7:40 am and sunset at 5:24 pm. On the last day of January, sunrise is at 7:31 am and sunset at 5:54 pm EST.

Sunshine

The month with the least sunshine is January, 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 of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum UV index of 2 during January translates into these guidelines:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. To avoid the Sun's strongest rays, limit exposure around the mid-day period. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.

Updated: Jul 8, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest month?

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

Is it cold during January?

The high-temperature during January is 41.5°F (5.3°C) and the low-temperature is 26.6°F (-3°C).

What is the average humidity in January?

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

How much does it rain 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, Tennessee, during January, snow falls for 8.9 days and regularly aggregates up to 3.39" (86mm) of snow.

What is the average length of the day in January?

In January, the average day length is 10h and 1min.

When is the sunrise / sunset in January?

In January, on the first day of the month, sunrise is at 7:40 am and sunset at 5:24 pm. On the last day of the month, in Johnson City, sunrise is at 7:31 am and sunset at 5:54 pm EST.

What is the month with the least sunshine?

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

How long on average sun shines in January?

In January, the average sunshine duration is 5h.

What is the month with the lowest UV index?

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

What is the UV index reading in January?

In Johnson City, the average daily maximum UV index in January is 2. A UV Index value of 2, and less, symbolizes a low health threat from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year January F M A M J J A S O N D

Dec

January

Feb

Average high temperature

46.6°F 8.1°C

41.5°F 5.3°C

46.4°F 8°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

6.3mph 10.1km/h

7mph 11.3km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

13.2

11.1

Average UV index

Average cloud cover

Average visibility

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).

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).

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).

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%).

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").

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).

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").

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).

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).

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).

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).

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).

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).

January weather forecast
Johnson City, TN

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