Terre Haute, Indiana has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6.5 °C (low) to 17.9 °C (high). Annual precipitation averages 1136.4 Millimeters. Terre Haute 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 | -6.3 °C | 2.7 °C | 78.74 mm |
| February | -4.7 °C | 5.6 °C | 64.77 mm |
| March | 0.5 °C | 11.6 °C | 86.11 mm |
| April | 6.4 °C | 18.4 °C | 123.95 mm |
| May | 12.1 °C | 24.1 °C | 122.94 mm |
| June | 17 °C | 28.8 °C | 126.75 mm |
| July | 18.8 °C | 30.4 °C | 110.74 mm |
| August | 17.5 °C | 29.8 °C | 74.17 mm |
| September | 13.1 °C | 26.8 °C | 82.8 mm |
| October | 6.7 °C | 19.9 °C | 96.77 mm |
| November | 1 °C | 11.9 °C | 93.73 mm |
| December | -3.6 °C | 5.3 °C | 74.93 mm |
| Annual | 6.5 °C | 17.9 °C | 1136.4 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 |