Modoc, Indiana has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 40.4 °F (low) to 60.3 °F (high). Annual precipitation averages 43 Inches. Modoc 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 | 17.6 °F | 33.7 °F | 2.97 in. |
| February | 19.9 °F | 37.6 °F | 2.37 in. |
| March | 28.4 °F | 48.1 °F | 3.41 in. |
| April | 38.8 °F | 61.1 °F | 4.32 in. |
| May | 50.3 °F | 71.2 °F | 4.62 in. |
| June | 59.3 °F | 79.6 °F | 4.88 in. |
| July | 61.6 °F | 82.5 °F | 4.29 in. |
| August | 59.7 °F | 81.3 °F | 3.49 in. |
| September | 52.6 °F | 76.0 °F | 3.19 in. |
| October | 41.7 °F | 64.0 °F | 3.12 in. |
| November | 31.4 °F | 50.3 °F | 3.36 in. |
| December | 23.2 °F | 38.2 °F | 2.95 in. |
| Annual | 40.4 °F | 60.3 °F | 42.97 in. |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 5b : -15°F to -10°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |