Knoxville Weather in August
Average highs run from 82°F on August 1 to 79°F on August 31, and lows from 56°F to 52°F. Normal precipitation for the month is 3.55 in over about 12 wet days.
August day by day
The normal high and low for each date, and the record, in °F.
- Normal low
- Normal high
- Record high
- Record low
August at a glance
- Average high
- 81°F
- Average low
- 55°F
- Precipitation
- 3.55 in
- Record high
- 100°FAug 31, 1932
- Record low
- 31°FAug 25, 1940
- Chance of a freeze
- 0%
- Days of 90°F or more
- 2.0
- Daylight
- 14 h 25 min to 13 h 11 min
- Cloud cover
- 58%
- Humidity
- 73%
- Dew point
- 57°F
- Wind
- 3.8 mph
Every day of the month
A wet day has at least 0.01 inch of precipitation; snow means at least 0.1 inch of snowfall.
| Date | Normal high | Normal low | Record high | Record low | Chance wet | Chance of snow |
|---|---|---|---|---|---|---|
| Aug 1 | 82°F | 56°F | 94°F 1933 | 40°F 1936 | 41% | 0% |
| Aug 2 | 82°F | 56°F | 95°F 1930 | 40°F 1929 | 41% | 0% |
| Aug 3 | 82°F | 56°F | 96°F 1930 | 37°F 1927 | 41% | 0% |
| Aug 4 | 82°F | 56°F | 95°F 1930 | 44°F 1927 | 41% | 0% |
| Aug 5 | 82°F | 56°F | 95°F 1944 | 39°F 1972 | 41% | 0% |
| Aug 6 | 82°F | 56°F | 96°F 1955 | 37°F 1934 | 41% | 0% |
| Aug 7 | 82°F | 56°F | 95°F 1930 | 41°F 1929 | 41% | 0% |
| Aug 8 | 82°F | 56°F | 97°F 1930 | 40°F 1989 | 40% | 0% |
| Aug 9 | 82°F | 56°F | 93°F 2001 | 43°F 1989 | 40% | 0% |
| Aug 10 | 82°F | 56°F | 93°F 1934 | 38°F 1927 | 40% | 0% |
| Aug 11 | 82°F | 56°F | 93°F 1944 | 38°F 1941 | 40% | 0% |
| Aug 12 | 81°F | 56°F | 94°F 1944 | 35°F 1930 | 39% | 0% |
| Aug 13 | 81°F | 56°F | 95°F 1947 | 33°F 1930 | 39% | 0% |
| Aug 14 | 81°F | 55°F | 96°F 1944 | 40°F 1941 | 39% | 0% |
| Aug 15 | 81°F | 55°F | 94°F 1938 | 42°F 1932 | 38% | 0% |
| Aug 16 | 81°F | 55°F | 96°F 1944 | 38°F 1927 | 38% | 0% |
| Aug 17 | 81°F | 55°F | 94°F 1944 | 42°F 1929 | 38% | 0% |
| Aug 18 | 81°F | 55°F | 91°F 1939 | 39°F 1936 | 37% | 0% |
| Aug 19 | 81°F | 55°F | 90°F 1937 | 41°F 1977 | 37% | 0% |
| Aug 20 | 81°F | 55°F | 92°F 1947 | 33°F 1944 | 37% | 0% |
| Aug 21 | 81°F | 54°F | 91°F 1955 | 34°F 1929 | 37% | 0% |
| Aug 22 | 80°F | 54°F | 91°F 1959 | 34°F 1982 | 36% | 0% |
| Aug 23 | 80°F | 54°F | 93°F 1932 | 34°F 1982 | 36% | 0% |
| Aug 24 | 80°F | 54°F | 93°F 1932 | 32°F 1940 | 36% | 0% |
| Aug 25 | 80°F | 54°F | 95°F 1968 | 31°F 1940 | 36% | 0% |
| Aug 26 | 80°F | 53°F | 94°F 1932 | 37°F 1944 | 36% | 0% |
| Aug 27 | 80°F | 53°F | 87°F 1932 | 34°F 1944 | 36% | 0% |
| Aug 28 | 79°F | 53°F | 91°F 1930 | 35°F 1941 | 36% | 0% |
| Aug 29 | 79°F | 53°F | 91°F 1953 | 32°F 1982 | 35% | 0% |
| Aug 30 | 79°F | 52°F | 92°F 1932 | 32°F 1934 | 35% | 0% |
| Aug 31 | 79°F | 52°F | 100°F 1932 | 34°F 1929 | 35% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (EDT).
- August 1
- sunrise 6:03 AM, sunset 8:28 PM
- August 31
- sunrise 6:34 AM, sunset 7:45 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00300023 (Addison), public domain. Records: NOAA GHCN-Daily, station USC00369408, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.