Dublin, Indiana has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 4.9 °C (low) to 16.1 °C (high). Annual precipitation averages 1131.6 Millimeters. Dublin is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -7.7 °C | 1.3 °C | 81.53 mm |
| February | -6.3 °C | 3.5 °C | 62.23 mm |
| March | -1.7 °C | 9.4 °C | 93.22 mm |
| April | 4.1 °C | 16.5 °C | 117.35 mm |
| May | 10.3 °C | 22.1 °C | 124.97 mm |
| June | 15.4 °C | 26.7 °C | 126.49 mm |
| July | 16.7 °C | 28.3 °C | 112.01 mm |
| August | 15.7 °C | 27.7 °C | 84.07 mm |
| September | 11.5 °C | 24.8 °C | 81.03 mm |
| October | 5.5 °C | 18.2 °C | 80.01 mm |
| November | -0.1 °C | 10.6 °C | 88.14 mm |
| December | -4.4 °C | 4 °C | 80.52 mm |
| Annual | 4.9 °C | 16.1 °C | 1131.57 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 5b : -26.1°C to -23.3°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |