January Weather in Knoxville, United States

Last updated: June 24, 2025

In Knoxville, United States during January, the average temperature hovers around -4°C (26°F), with daily variations ranging from a chilling -31°C (-23°F) to a mild 13°C (56°F). Expect approximately 57 mm (2.2 in) of precipitation spread over 7 days, accompanied by a notable average humidity of 81%.

January Temperature in Knoxville

In January in Knoxville, the average temperature is -4°C (26°F), with a maximum that can reach 13°C (56°F) and a minimum that can be as low as -31°C (-23°F). Travelers should be prepared for significant temperature fluctuations and dress warmly for outdoor activities.

January Weather in Knoxville: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Knoxville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Knoxville, January typically has an average temperature of -4°C (26°F), with highs reaching up to 13°C (56°F) and lows dropping to around -31°C (-23°F).

Data source: Temperature data for Knoxville generated using information from the Copernicus Climate Change Service.

January Precipitation in Knoxville

In Knoxville in January, the precipitation amount is 57 mm (2.2 in) over the course of 7 days.

January Precipitation Trends in Knoxville

The chart displays monthly precipitation patterns in Knoxville, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Knoxville, January typically receives around 57 mm (2.2 inches) of precipitation spread over approximately 7 days.

Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

January Humidity in Knoxville

In Knoxville in January, humidity is 81%. With an average temperature of -4°C (26°F), this humidity feels like a biting chill that seeps into your bones, making traveling quite uncomfortable and necessitating extra layers to stay warm and dry.

January Average Humidity in Knoxville

This chart illustrates the average monthly humidity levels in Knoxville, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Knoxville is approximately 81%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Knoxville

In Knoxville in January, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Knoxville, you can check the information here.

Maximum UV Index Levels in Knoxville for January

The chart shows the monthly maximum UV Index (UVI) for Knoxville in January, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In January, the maximum UV index in Knoxville typically reaches 3, which falls under the moderate exposure category.

Data source: Knoxville January UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How January Weather in Knoxville Compares to Other Months

Weather in Knoxville varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Knoxville, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Knoxville, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (26°F)	57 mm (2.2 inches)	81%	moderate
February Weather	-2°C (28°F)	65 mm (2.6 inches)	81%	moderate
March Weather	5°C (41°F)	105 mm (4.1 inches)	81%	high
April Weather	10°C (50°F)	111 mm (4.4 inches)	82%	very high
May Weather	17°C (63°F)	160 mm (6.3 inches)	78%	very high
June Weather	23°C (74°F)	152 mm (6.0 inches)	81%	extreme
July Weather	25°C (77°F)	108 mm (4.2 inches)	79%	very high
August Weather	23°C (74°F)	67 mm (2.6 inches)	77%	very high
September Weather	20°C (69°F)	99 mm (3.9 inches)	78%	very high
October Weather	13°C (55°F)	126 mm (5.0 inches)	78%	high
November Weather	4°C (40°F)	52 mm (2.1 inches)	87%	moderate
December Weather	1°C (33°F)	50 mm (2.0 inches)	84%	low