| Noted below are monthly and annual average precipitation and high and low temperatures for Chattanooga, TN, which is close to the Apalachia Tailwater, and works well enough. |
| Chattanooga, TN Normals 1961-1990 | |||||||
| ........ | Jan | Feb | Mar | Apr | May | Jun | .... |
| Precipitation | 4.89 | 4.81 | 6.03 | 4.31 | 4.37 | 3.52 | .... |
| High Temp. | 46.8 | 52.4 | 61.8 | 71.4 | 78.5 | 86.4 | .... |
| Low Temp. | 28.0 | 31.1 | 39.0 | 46.8 | 55.4 | 63.9 | .... |
| ........ | Jul | Aug | Sep | Oct | Nov | Dec | Avg |
| Precipitation | 4.85 | 3.53 | 4.15 | 3.22 | 4.61 | 5.17 | 53.5 |
| High Temp. | 89.0 | 88.2 | 82.1 | 72.0 | 61.1 | 50.8 | 70.0 |
| Low Temp. | 68.3 | 67.7 | 62.6 | 48.9 | 39.9 | 31.2 | 48.6 |