March Weather in Knoxville, United States

Last updated: June 24, 2025

In March, the average temperature in Knoxville, United States hovers around 5°C (41°F). Visitors can expect a minimum temperature of -21°C (-5°F) and a maximum of 23°C (74°F). Throughout the month, the region experiences about 86 mm (3.4 in) of precipitation over 9 days, with an average humidity level of 77%.

March Temperature in Knoxville

In March in Knoxville, the average temperature is 5°C (41°F). The maximum can reach 23°C (74°F), and the minimum can be as low as -21°C (-5°F). Be prepared for a wide range of temperatures when planning your trip to Knoxville during this time.

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

The chart illustrates March 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, March typically has an average temperature of 5°C (41°F), with highs reaching up to 23°C (74°F) and lows dropping to around -21°C (-5°F).

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

March Precipitation in Knoxville

In Knoxville in March, the precipitation amount is 86 mm (3.4 in), falling over the course of 9 days.

March Precipitation Trends in Knoxville

The chart displays monthly precipitation patterns in Knoxville, with values for each month alongside March’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March’s conditions compare to those of other months. In Knoxville, March typically receives around 86 mm (3.4 inches) of precipitation spread over approximately 9 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

March Humidity in Knoxville

In Knoxville in March humidity is 77%. With an average temperature of 5°C (41°F), this humidity feels like a damp chill that seeps into your bones, making traveling quite uncomfortable unless you're bundled up in warm layers.

March Average Humidity in Knoxville

This chart illustrates the average monthly humidity levels in Knoxville, with March’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In March, average humidity in Knoxville is approximately 77%, offering insight into how humid the weather typically is during this month.

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

March UV Index in Knoxville

In Knoxville in March, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Knoxville, you can refer to this Hourly UV Index in Knoxville.

Maximum UV Index Levels in Knoxville for March

The chart shows the monthly maximum UV Index (UVI) for Knoxville in March, 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 March, the maximum UV index in Knoxville typically reaches 6, which falls under the high exposure category.

Data source: Knoxville March 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 March 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 March’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 March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-5°C (24°F)	44 mm (1.7 inches)	78%	moderate
February Weather	-4°C (25°F)	47 mm (1.8 inches)	80%	moderate
March Weather	5°C (41°F)	86 mm (3.4 inches)	77%	high
April Weather	10°C (50°F)	71 mm (2.8 inches)	77%	very high
May Weather	17°C (63°F)	153 mm (6.0 inches)	77%	very high
June Weather	24°C (75°F)	129 mm (5.1 inches)	81%	extreme
July Weather	25°C (78°F)	77 mm (3.0 inches)	81%	extreme
August Weather	24°C (75°F)	71 mm (2.8 inches)	77%	very high
September Weather	21°C (69°F)	121 mm (4.8 inches)	73%	very high
October Weather	12°C (54°F)	130 mm (5.1 inches)	75%	high
November Weather	4°C (40°F)	50 mm (2.0 inches)	85%	moderate
December Weather	0°C (32°F)	37 mm (1.5 inches)	83%	moderate