Whiteside, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 9 °C (low) to 21.1 °C (high). Annual precipitation averages 1494 Millimeters. Whiteside is located in USDA Plant Hardiness Zone 7b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -1.4 °C | 9.3 °C | 140.72 mm |
| February | 0.2 °C | 11.6 °C | 139.45 mm |
| March | 3.7 °C | 16.4 °C | 139.95 mm |
| April | 7.9 °C | 21.8 °C | 128.02 mm |
| May | 13.1 °C | 25.8 °C | 115.06 mm |
| June | 17.7 °C | 29.4 °C | 113.03 mm |
| July | 19.6 °C | 31.1 °C | 125.73 mm |
| August | 19.1 °C | 30.9 °C | 95 mm |
| September | 15.7 °C | 28.1 °C | 113.54 mm |
| October | 9.1 °C | 22.4 °C | 91.95 mm |
| November | 3.2 °C | 15.8 °C | 130.05 mm |
| December | 0.3 °C | 10.9 °C | 161.54 mm |
| Annual | 9 °C | 21.1 °C | 1494.04 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 50-75 Days |
| Plant Hardiness Zone | Zone 7b : -15°C to -12.2°C |
| Plant Hardiness Zone - 2012 | Zone 7a : -17.8°C to -15°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |