May weather in Knoxville, TN
The average temperature in Knoxville in May is 66.1°F (53.8°F–78.5°F). Average precipitation: 4.53 inches.
May is a spring month in Knoxville, and is warmer than the annual average of 57.9°F. Daily temperatures swing about 24.7°F between overnight low and afternoon high. Expect about 12 days with precipitation. Daylight averages about 13h 54m. For travel, May is a comfortable month to visit.
Avg High
78.5°F
Avg Low
53.8°F
Precipitation
4.53 in
Daylight
13h 54m
May records in Knoxville
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| May 1 | 87.1°F (2017) | 34.0°F (1996) | 1.19 in (2002) |
| May 2 | 90.0°F (2024) | 37.0°F (1999) | 1.10 in (2016) |
| May 3 | 88.0°F (2010) | 36.0°F (2005) | 2.38 in (2010) |
| May 4 | 86.0°F (2001) | 33.1°F (1976) | 1.03 in (1972) |
| May 5 | 86.0°F (2001) | 34.0°F (1976) | 1.29 in (2013) |
| May 6 | 87.1°F (2001) | 37.9°F (1976) | 2.70 in (2003) |
| May 7 | 86.0°F (2015) | 35.1°F (2020) | 3.80 in (1984) |
| May 8 | 88.0°F (2010) | 32.0°F (1989) | 1.49 in (1984) |
| May 9 | 87.1°F (2004) | 37.0°F (1989) | 0.93 in (2009) |
| May 10 | 88.0°F (2004) | 37.9°F (1997) | 1.59 in (1995) |
| May 11 | 87.1°F (2011) | 30.0°F (2020) | 1.06 in (2019) |
| May 12 | 90.0°F (2018) | 36.0°F (2020) | 1.66 in (2025) |
| May 13 | 90.0°F (2018) | 36.0°F (1989) | 1.40 in (1983) |
| May 14 | 91.0°F (2018) | 37.9°F (1989) | 1.87 in (2012) |
| May 15 | 93.0°F (2018) | 41.0°F (2021) | 2.00 in (1976) |
| May 16 | 90.0°F (2018) | 36.0°F (1997) | 1.05 in (2003) |
| May 17 | 89.1°F (2017) | 37.9°F (1984) | 1.33 in (2025) |
| May 18 | 90.0°F (2017) | 39.9°F (2009) | 2.08 in (1980) |
| May 19 | 90.0°F (2001) | 37.0°F (2002) | 2.12 in (2020) |
| May 20 | 90.0°F (2022) | 37.0°F (2002) | 2.41 in (2005) |
| May 21 | 91.9°F (2017) | 39.0°F (2002) | 0.71 in (1980) |
| May 22 | 91.0°F (2022) | 37.9°F (2002) | 1.10 in (2001) |
| May 23 | 89.1°F (2019) | 42.1°F (1993) | 2.01 in (1974) |
| May 24 | 88.0°F (2010) | 42.1°F (1993) | 4.92 in (2000) |
| May 25 | 91.0°F (2018) | 43.0°F (2013) | 0.65 in (2000) |
| May 26 | 91.0°F (2011) | 42.1°F (1983) | 0.86 in (1997) |
| May 27 | 90.0°F (2012) | 43.0°F (1999) | 1.56 in (1994) |
| May 28 | 91.0°F (2012) | 42.1°F (1999) | 2.58 in (1973) |
| May 29 | 91.0°F (2012) | 46.0°F (1994) | 1.44 in (2021) |
| May 30 | 91.0°F (2011) | 37.9°F (1984) | 2.79 in (1966) |
| May 31 | 91.9°F (2006) | 37.9°F (1984) | 2.15 in (1974) |