Crawfordsville, Indiana has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.2 °C (low) to 16.3 °C (high). Annual precipitation averages 1127.5 Millimeters. Crawfordsville is located in USDA Plant Hardiness Zone 5b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -7.6 °C | 1.3 °C | 75.69 mm |
| February | -6.3 °C | 3.6 °C | 63.75 mm |
| March | -1.3 °C | 9.7 °C | 79.25 mm |
| April | 4.5 °C | 16.6 °C | 116.08 mm |
| May | 10.7 °C | 22.6 °C | 120.9 mm |
| June | 15.7 °C | 27.2 °C | 129.29 mm |
| July | 17.3 °C | 28.7 °C | 119.13 mm |
| August | 16 °C | 28 °C | 96.52 mm |
| September | 11.8 °C | 25.3 °C | 80.26 mm |
| October | 5.7 °C | 18.6 °C | 83.06 mm |
| November | 0.1 °C | 10.4 °C | 90.93 mm |
| December | -4.8 °C | 3.8 °C | 72.64 mm |
| Annual | 5.2 °C | 16.3 °C | 1127.5 mm |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 5b : -26.1°C to -23.3°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 |