January Weather in Knoxville, United States

Last updated: June 24, 2025

In January, the average temperature in Knoxville, United States hovers around 4°C (40°F), with a striking range that can dip to a chilly -16°C (4°F) and soar to a warm 21°C (70°F). Visitors should also prepare for 101 mm (4.0 in) of precipitation spread over about 10 days, along with a notable average humidity level of 82%. Embrace the variety and prepare for an unforgettable experience!

January Temperature in Knoxville

In January in Knoxville, the average temperature is 4°C (40°F). The maximum can reach 21°C (70°F) and the minimum can be as low as -16°C (4°F). Be sure to prepare for a wide range of temperatures if you're planning to travel during this time.

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 (40°F), with highs reaching up to 21°C (70°F) and lows dropping to around -16°C (4°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 101 mm (4.0 in) spread over the course of 10 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 101 mm (4.0 inches) of precipitation spread over approximately 10 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 82%. With an average temperature of 4°C (40°F), this humidity feels like a chilly dampness that lingers in the air, making travel slightly uncomfortable as the cold penetrates through layers of clothing, often leaving you feeling chilled and clammy.

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 82%, 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 reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Knoxville for better planning.

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 4, 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 (40°F)	101 mm (4.0 inches)	82%	moderate
February Weather	6°C (43°F)	142 mm (5.6 inches)	79%	high
March Weather	11°C (53°F)	156 mm (6.1 inches)	77%	very high
April Weather	15°C (59°F)	154 mm (6.1 inches)	78%	very high
May Weather	20°C (69°F)	213 mm (8.4 inches)	82%	extreme
June Weather	25°C (77°F)	114 mm (4.5 inches)	81%	extreme
July Weather	27°C (80°F)	77 mm (3.0 inches)	75%	extreme
August Weather	26°C (78°F)	116 mm (4.6 inches)	61%	very high
September Weather	24°C (75°F)	72 mm (2.8 inches)	59%	very high
October Weather	17°C (62°F)	107 mm (4.2 inches)	69%	high
November Weather	9°C (49°F)	96 mm (3.8 inches)	82%	moderate
December Weather	7°C (45°F)	110 mm (4.3 inches)	87%	moderate