May Weather in Knoxville

Last updated: March 2, 2024

The weather in Knoxville, United States, during May is characterized by an average temperature of 17°C (63°F). Highs can soar to 32°C (90°F), while lows may dip to 4°C (40°F). Typically, the humidity level in Knoxville throughout May hovers around 77%.

4°C (40°F)

Minimum temperature

17°C (63°F)

Average temperature

32°C (90°F)

Maximum temperature

77%

Humidity

Precipitation and Sunshine hours

In May, Knoxville averages 153 mm (6.0 inches) of rainfall, typically over the course of 15 rainy days. The month enjoys an average of 14 hours 31 minutes of daylight, with the sun shining for approximately 8 hours 31 minutes each day. Additionally, there is a 31% probability of sunny days during this period.

153 mm (6.0 inches)

Precipitation

15 rainy days

Rainy days

8 hours 31 minutes

Sunshine hours

31%

Chance of sun

UV Index

In May, the UV Index in Knoxville reaches a maximum of 9, indicating a level of VeryHigh exposure. The most intense UV radiation typically occurs between 12:00 and 14:00, during which unprotected skin may burn in as little as 15 minutes.

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
  07:00 08:00 09:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00
UVI 1 2 3 5 7 9 9 9 7 5 3 2 1
Exposure Low Moderate High VeryHigh High Moderate Low
Time to burn 45 min 30 min 25 min 15 min 25 min 30 min 45 min

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