Humboldt, Tennessee has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 49.1 °F (low) to 70.2 °F (high). Annual precipitation averages 55.6 Inches. Humboldt 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 | 28.7 °F | 47.0 °F | 4.19 in. |
| February | 31.7 °F | 51.5 °F | 4.78 in. |
| March | 39.3 °F | 60.8 °F | 5.45 in. |
| April | 48.5 °F | 71.3 °F | 5.23 in. |
| May | 58.4 °F | 79.2 °F | 5.77 in. |
| June | 66.4 °F | 86.7 °F | 4.44 in. |
| July | 69.7 °F | 89.6 °F | 4.28 in. |
| August | 67.8 °F | 89.1 °F | 3.69 in. |
| September | 60.4 °F | 83.5 °F | 4.0 in. |
| October | 48.3 °F | 73.0 °F | 3.92 in. |
| November | 38.4 °F | 60.4 °F | 4.5 in. |
| December | 31.7 °F | 50.2 °F | 5.33 in. |
| Annual | 49.1 °F | 70.2 °F | 55.58 in. |
| 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 : 5°F to 10°F |
| Plant Hardiness Zone - 2012 | Zone 7a : 0°F to 5°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |