Patoka, Indiana has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 7.5 °C (low) to 19 °C (high). Annual precipitation averages 1230.9 Millimeters. Patoka is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.1 °C | 4.2 °C | 90.42 mm |
| February | -3.3 °C | 7.1 °C | 75.18 mm |
| March | 1.2 °C | 12.7 °C | 109.22 mm |
| April | 7.1 °C | 19.6 °C | 129.54 mm |
| May | 13.1 °C | 24.9 °C | 137.92 mm |
| June | 17.9 °C | 29.6 °C | 116.84 mm |
| July | 19.5 °C | 31.2 °C | 109.47 mm |
| August | 18.4 °C | 30.7 °C | 81.79 mm |
| September | 14.1 °C | 27.6 °C | 96.27 mm |
| October | 7.5 °C | 21 °C | 86.61 mm |
| November | 1.7 °C | 13 °C | 104.65 mm |
| December | -2.7 °C | 6.6 °C | 92.96 mm |
| Annual | 7.5 °C | 19 °C | 1230.87 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| Average Days With Frost | 75-100 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |