Patoka, Indiana has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 45.4 °F (low) to 66.2 °F (high). Annual precipitation averages 48.5 Inches. 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 | 22.9 °F | 39.6 °F | 3.56 in. |
| February | 26.0 °F | 44.8 °F | 2.96 in. |
| March | 34.2 °F | 54.9 °F | 4.3 in. |
| April | 44.7 °F | 67.2 °F | 5.1 in. |
| May | 55.5 °F | 76.8 °F | 5.43 in. |
| June | 64.2 °F | 85.3 °F | 4.6 in. |
| July | 67.1 °F | 88.1 °F | 4.31 in. |
| August | 65.1 °F | 87.2 °F | 3.22 in. |
| September | 57.3 °F | 81.6 °F | 3.79 in. |
| October | 45.5 °F | 69.8 °F | 3.41 in. |
| November | 35.1 °F | 55.4 °F | 4.12 in. |
| December | 27.1 °F | 43.9 °F | 3.66 in. |
| Annual | 45.4 °F | 66.2 °F | 48.46 in. |
| 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 : -5°F to 0°F |
| Plant Hardiness Zone - 2012 | Zone 6b : -5°F to 0°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |