
| Month | Low | High |
|---|---|---|
| Jan | 29.9°F | 48.8°F |
| Feb | 32.6°F | 54.1°F |
| Mar | 40.0°F | 62.8°F |
| Apr | 47.0°F | 72.1°F |
| May | 56.2°F | 79.1°F |
| Jun | 64.6°F | 86.2°F |
| Jul | 69.4°F | 89.8°F |
| Aug | 68.3°F | 88.7°F |
| Sept | 61.7°F | 82.5°F |
| Oct | 48.5°F | 72.3°F |
| Nov | 39.5°F | 61.1°F |
| Dec | 32.7°F | 52.0°F |
Chattanooga's coldest month is January when the average temperature overnight is 29.9°F. In July, the warmest month, the average day time temperature rises to 89.8°F.

| Month | Precipitation |
|---|---|
| Jan | 5.40in. |
| Feb | 4.85in. |
| Mar | 6.19in. |
| Apr | 4.23in. |
| May | 4.28in. |
| Jun | 3.99in. |
| Jul | 4.73in. |
| Aug | 3.59in. |
| Sept | 4.31in. |
| Oct | 3.26in. |
| Nov | 4.88in. |
| Dec | 4.81in. |
The driest month in Chattanooga is October with 3.26 inches of precipitation, and with 6.19 inches March is the wettest month.