Pulaski, Ohio has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 4.3 °C (low) to 15.6 °C (high). Annual precipitation averages 928.9 Millimeters. Pulaski 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 | -8.3 °C | 0.3 °C | 60.71 mm |
| February | -7.4 °C | 2.1 °C | 53.34 mm |
| March | -2.8 °C | 7.9 °C | 61.21 mm |
| April | 2.8 °C | 15.5 °C | 88.9 mm |
| May | 9.3 °C | 21.9 °C | 103.89 mm |
| June | 14.9 °C | 27.2 °C | 95.76 mm |
| July | 16.7 °C | 29.3 °C | 90.42 mm |
| August | 15.6 °C | 28.1 °C | 91.19 mm |
| September | 11.3 °C | 24.7 °C | 78.74 mm |
| October | 5.1 °C | 17.5 °C | 69.85 mm |
| November | -0.4 °C | 9.5 °C | 74.17 mm |
| December | -5.1 °C | 2.9 °C | 60.71 mm |
| Annual | 4.3 °C | 15.6 °C | 928.89 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 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 | Dfb - Humid Continental Mild Summer, Wet All Year |