Seelyville, Indiana has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6.3 °C (low) to 17.5 °C (high). Annual precipitation averages 1130.6 Millimeters. Seelyville 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 | -6.6 °C | 2.4 °C | 78.74 mm |
| February | -4.8 °C | 5.3 °C | 64.26 mm |
| March | 0.2 °C | 11.2 °C | 86.11 mm |
| April | 6.1 °C | 17.9 °C | 124.21 mm |
| May | 11.8 °C | 23.7 °C | 118.87 mm |
| June | 16.8 °C | 28.3 °C | 131.57 mm |
| July | 18.4 °C | 29.9 °C | 109.47 mm |
| August | 17.2 °C | 29.3 °C | 72.9 mm |
| September | 12.8 °C | 26.3 °C | 82.3 mm |
| October | 6.6 °C | 19.5 °C | 95 mm |
| November | 0.8 °C | 11.6 °C | 91.69 mm |
| December | -3.8 °C | 5 °C | 75.44 mm |
| Annual | 6.3 °C | 17.5 °C | 1130.56 mm |
| 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 |