Republic, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5 °C (low) to 15.6 °C (high). Annual precipitation averages 986.8 Millimeters. Republic 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. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -7.6 °C | 0.7 °C | 67.31 mm |
| February | -6.7 °C | 2.3 °C | 56.13 mm |
| March | -2.2 °C | 7.9 °C | 66.55 mm |
| April | 3.6 °C | 15.6 °C | 97.79 mm |
| May | 10 °C | 21.8 °C | 102.11 mm |
| June | 15.3 °C | 26.8 °C | 104.65 mm |
| July | 17.1 °C | 28.7 °C | 102.36 mm |
| August | 16 °C | 27.8 °C | 90.17 mm |
| September | 12 °C | 24.6 °C | 86.11 mm |
| October | 5.9 °C | 17.4 °C | 72.9 mm |
| November | 0.4 °C | 9.8 °C | 73.41 mm |
| December | -4.3 °C | 3.5 °C | 67.31 mm |
| Annual | 5 °C | 15.6 °C | 986.8 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°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 |