Lafayette, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.6 °C (low) to 16.4 °C (high). Annual precipitation averages 1052.1 Millimeters. Lafayette is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -7.2 °C | 0.7 °C | 71.12 mm |
| February | -6.2 °C | 2.5 °C | 59.18 mm |
| March | -1.6 °C | 8.3 °C | 72.64 mm |
| April | 4.3 °C | 15.8 °C | 97.54 mm |
| May | 10.7 °C | 21.8 °C | 104.9 mm |
| June | 15.9 °C | 26.7 °C | 108.71 mm |
| July | 17.6 °C | 28.4 °C | 102.11 mm |
| August | 16.6 °C | 27.6 °C | 87.88 mm |
| September | 12.6 °C | 24.6 °C | 78.49 mm |
| October | 6.4 °C | 17.6 °C | 72.14 mm |
| November | 0.7 °C | 9.8 °C | 75.95 mm |
| December | -4.1 °C | 3.4 °C | 66.55 mm |
| Annual | 5.5 °C | 15.6 °C | 997.21 mm |
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -6.6 °C | 1.7 °C | 77.47 mm |
| February | -5.5 °C | 3.8 °C | 61.47 mm |
| March | -1 °C | 9.6 °C | 82.55 mm |
| April | 4.7 °C | 16.7 °C | 101.85 mm |
| May | 10.9 °C | 22.7 °C | 118.11 mm |
| June | 15.9 °C | 27.2 °C | 113.03 mm |
| July | 17.6 °C | 28.7 °C | 115.32 mm |
| August | 16.3 °C | 28.1 °C | 84.33 mm |
| September | 12.4 °C | 25.3 °C | 77.98 mm |
| October | 6.1 °C | 18.3 °C | 67.56 mm |
| November | 0.4 °C | 10.6 °C | 76.96 mm |
| December | -3.5 °C | 4.3 °C | 75.44 mm |
| Annual | 5.6 °C | 16.4 °C | 1052.07 mm |
| 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 : -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 |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| 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 |