Georgetown, Indiana has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 7.6 °C (low) to 19.1 °C (high). Annual precipitation averages 1259.6 Millimeters. Georgetown is located in USDA Plant Hardiness Zone 7a. 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 | -4.3 °C | 5.3 °C | 93.47 mm |
| February | -2.8 °C | 8 °C | 88.65 mm |
| March | 1.4 °C | 13.4 °C | 115.82 mm |
| April | 6.9 °C | 19.8 °C | 128.02 mm |
| May | 12.6 °C | 24.6 °C | 135.13 mm |
| June | 17.3 °C | 28.7 °C | 120.9 mm |
| July | 19.3 °C | 30.5 °C | 104.14 mm |
| August | 18.4 °C | 30.2 °C | 83.82 mm |
| September | 14.3 °C | 27 °C | 95 mm |
| October | 7.8 °C | 20.7 °C | 92.96 mm |
| November | 2.1 °C | 13.5 °C | 93.47 mm |
| December | -1.9 °C | 7.5 °C | 108.2 mm |
| Annual | 7.6 °C | 19.1 °C | 1259.58 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 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6a : -23.3°C to -20.6°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |