Knox County Weather in August
Average highs run from 86°F on August 1 to 81°F on August 31, and lows from 63°F to 57°F. Normal precipitation for the month is 3.65 in over about 8 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
- 84°F
- Average low
- 60°F
- Precipitation
- 3.65 in
- Record high
- 112°FAug 4, 1934
- Record low
- 41°FAug 30, 1935
- Chance of a freeze
- 0%
- Days of 90°F or more
- 8.8
- Daylight
- 14 h 28 min to 13 h 11 min
- Cloud cover
- 49%
- Humidity
- 61%
- Dew point
- 58°F
- Wind
- 9.6 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 | 86°F | 63°F | 101°F 1936 | 51°F 1933 | 26% | 0% |
| Aug 2 | 86°F | 63°F | 105°F 1936 | 49°F 1933 | 26% | 0% |
| Aug 3 | 86°F | 63°F | 107°F 1947 | 45°F 1933 | 26% | 0% |
| Aug 4 | 86°F | 63°F | 112°F 1934 | 50°F 2020 | 26% | 0% |
| Aug 5 | 86°F | 62°F | 104°F 1934 | 51°F 2026 | 26% | 0% |
| Aug 6 | 86°F | 62°F | 101°F 1934 | 53°F 1933 | 26% | 0% |
| Aug 7 | 86°F | 62°F | 98°F 1937 | 55°F 1945 | 26% | 0% |
| Aug 8 | 85°F | 62°F | 102°F 1936 | 52°F 2026 | 26% | 0% |
| Aug 9 | 85°F | 62°F | 109°F 1947 | 48°F 2024 | 26% | 0% |
| Aug 10 | 85°F | 62°F | 106°F 1947 | 49°F 2024 | 26% | 0% |
| Aug 11 | 85°F | 62°F | 100°F 1936 | 54°F 2017 | 25% | 0% |
| Aug 12 | 85°F | 61°F | 99°F 1936 | 50°F 1933 | 25% | 0% |
| Aug 13 | 85°F | 61°F | 104°F 1938 | 54°F 1933 | 25% | 0% |
| Aug 14 | 85°F | 61°F | 98°F 1937 | 46°F 1933 | 25% | 0% |
| Aug 15 | 84°F | 61°F | 108°F 1937 | 51°F 2023 | 25% | 0% |
| Aug 16 | 84°F | 61°F | 100°F 1937 | 52°F 1933 | 25% | 0% |
| Aug 17 | 84°F | 60°F | 107°F 1936 | 44°F 1943 | 25% | 0% |
| Aug 18 | 84°F | 60°F | 103°F 1934 | 46°F 1943 | 24% | 0% |
| Aug 19 | 84°F | 60°F | 100°F 1942 | 49°F 1943 | 24% | 0% |
| Aug 20 | 84°F | 60°F | 102°F 1947 | 50°F 1940 | 24% | 0% |
| Aug 21 | 83°F | 60°F | 100°F 1947 | 48°F 1939 | 24% | 0% |
| Aug 22 | 83°F | 59°F | 106°F 1938 | 51°F 1939 | 24% | 0% |
| Aug 23 | 83°F | 59°F | 102°F 1936 | 49°F 1942 | 24% | 0% |
| Aug 24 | 83°F | 59°F | 111°F 1936 | 43°F 1934 | 23% | 0% |
| Aug 25 | 83°F | 59°F | 95°F 2020 | 49°F 1934 | 23% | 0% |
| Aug 26 | 83°F | 58°F | 94°F 2020 | 48°F 1947 | 23% | 0% |
| Aug 27 | 82°F | 58°F | 92°F 1945 | 48°F 1941 | 23% | 0% |
| Aug 28 | 82°F | 58°F | 96°F 1937 | 43°F 1935 | 23% | 0% |
| Aug 29 | 82°F | 57°F | 100°F 1947 | 42°F 1946 | 23% | 0% |
| Aug 30 | 82°F | 57°F | 99°F 1941 | 41°F 1935 | 23% | 0% |
| Aug 31 | 81°F | 57°F | 95°F 1936 | 45°F 1935 | 23% | 0% |
Chance of rain
- Chance of a wet day
- Chance of snowfall
Sunrise and sunset
Times for 2026, local time (CDT).
- August 1
- sunrise 6:24 AM, sunset 8:52 PM
- August 31
- sunrise 6:56 AM, sunset 8:07 PM
Other months
Sources
Normals: NOAA NCEI U.S. Climate Normals, 1991-2020, station USC00251990 (Creighton), public domain. Records: NOAA GHCN-Daily, station USW00094911, 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.