Clifford, Indiana has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6.2 °C (low) to 17.6 °C (high). Annual precipitation averages 1189.5 Millimeters. Clifford 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 | -5.9 °C | 3.1 °C | 85.6 mm |
| February | -4.7 °C | 5.5 °C | 70.61 mm |
| March | -0.1 °C | 11.3 °C | 93.73 mm |
| April | 5.6 °C | 18.1 °C | 126.24 mm |
| May | 11.5 °C | 23.3 °C | 133.35 mm |
| June | 16.4 °C | 27.9 °C | 130.81 mm |
| July | 18.3 °C | 29.5 °C | 107.19 mm |
| August | 17.2 °C | 29.2 °C | 87.12 mm |
| September | 12.8 °C | 26.1 °C | 82.3 mm |
| October | 6.3 °C | 19.5 °C | 86.61 mm |
| November | 0.8 °C | 11.8 °C | 94.49 mm |
| December | -3.3 °C | 5.4 °C | 91.44 mm |
| Annual | 6.2 °C | 17.6 °C | 1189.49 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 |