January Weather in Knoxville, United States

Last updated: June 24, 2025

In January, the average temperature in Knoxville, United States is a cool 5°C (41°F), with a minimum dipping to a brisk -14°C (7°F) and a maximum reaching a mild 23°C (74°F). Expect 98 mm (3.9 in) of precipitation spread over 11 days, contributing to an average humidity of 86%. Prepare for a typically damp and chilly month ahead!

January Temperature in Knoxville

In January in Knoxville, the average temperature is 5°C (41°F). Maximum temperatures can reach 23°C (74°F), while the minimum can drop as low as -14°C (7°F). Be prepared for a wide range of temperatures when traveling during this month.

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 5°C (41°F), with highs reaching up to 23°C (74°F) and lows dropping to around -14°C (7°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 total precipitation amount is 98 mm (3.9 in) over the course of 11 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 98 mm (3.9 inches) of precipitation spread over approximately 11 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 86%. With an average temperature of 5°C (41°F), this humidity feels like a heavy, damp blanket wrapping around you, making outdoor activities uncomfortable and travel quite challenging due to the chill combined with the stickiness in the air.

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 86%, 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	5°C (41°F)	98 mm (3.9 inches)	86%	moderate
February Weather	8°C (46°F)	172 mm (6.8 inches)	86%	high
March Weather	11°C (52°F)	155 mm (6.1 inches)	86%	very high
April Weather	15°C (59°F)	132 mm (5.2 inches)	82%	very high
May Weather	21°C (69°F)	106 mm (4.2 inches)	85%	extreme
June Weather	24°C (75°F)	112 mm (4.4 inches)	85%	extreme
July Weather	26°C (79°F)	120 mm (4.7 inches)	83%	extreme
August Weather	25°C (78°F)	126 mm (5.0 inches)	76%	very high
September Weather	23°C (74°F)	91 mm (3.6 inches)	76%	very high
October Weather	17°C (63°F)	116 mm (4.6 inches)	80%	high
November Weather	9°C (49°F)	79 mm (3.1 inches)	88%	moderate
December Weather	7°C (45°F)	132 mm (5.2 inches)	88%	moderate