Tarlton, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.5 °C (low) to 16.7 °C (high). Annual precipitation averages 1056.6 Millimeters. Tarlton is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -6.5 °C | 2.7 °C | 76.71 mm |
| February | -5.6 °C | 4.5 °C | 66.55 mm |
| March | -1.2 °C | 10.1 °C | 87.88 mm |
| April | 4.7 °C | 17.2 °C | 103.12 mm |
| May | 10.7 °C | 22.5 °C | 111.25 mm |
| June | 15.7 °C | 27.1 °C | 113.03 mm |
| July | 17.3 °C | 28.7 °C | 106.68 mm |
| August | 16.2 °C | 28.2 °C | 88.9 mm |
| September | 12 °C | 25.1 °C | 77.47 mm |
| October | 5.8 °C | 18.3 °C | 74.93 mm |
| November | 0.3 °C | 11.2 °C | 75.18 mm |
| December | -3.6 °C | 5.2 °C | 74.93 mm |
| Annual | 5.5 °C | 16.7 °C | 1056.63 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |