Swanton, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 40.6 °F (low) to 59.7 °F (high). Annual precipitation averages 35.7 Inches. Swanton is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 17.9 °F | 32.4 °F | 2.35 in. |
| February | 19.4 °F | 35.6 °F | 2.07 in. |
| March | 27.4 °F | 45.8 °F | 2.49 in. |
| April | 38.2 °F | 59.1 °F | 3.4 in. |
| May | 49.8 °F | 70.8 °F | 3.97 in. |
| June | 59.6 °F | 80.4 °F | 3.67 in. |
| July | 62.9 °F | 84.2 °F | 3.42 in. |
| August | 60.8 °F | 82.0 °F | 3.47 in. |
| September | 53.2 °F | 76.1 °F | 2.98 in. |
| October | 42.1 °F | 63.2 °F | 2.8 in. |
| November | 32.2 °F | 49.1 °F | 2.77 in. |
| December | 23.9 °F | 37.5 °F | 2.35 in. |
| Annual | 40.6 °F | 59.7 °F | 35.74 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |