Williams Creek, Indiana has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 43.6 °F (low) to 62.2 °F (high). Annual precipitation averages 43.8 Inches. Williams Creek 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 | 20.2 °F | 35.5 °F | 2.95 in. |
| February | 22.8 °F | 39.6 °F | 2.47 in. |
| March | 31.5 °F | 50.4 °F | 3.35 in. |
| April | 42.4 °F | 63.2 °F | 4.41 in. |
| May | 53.5 °F | 73.1 °F | 4.83 in. |
| June | 62.4 °F | 81.4 °F | 5.16 in. |
| July | 65.6 °F | 84.6 °F | 4.38 in. |
| August | 63.9 °F | 83.4 °F | 3.23 in. |
| September | 56.2 °F | 77.9 °F | 3.38 in. |
| October | 44.7 °F | 65.7 °F | 3.25 in. |
| November | 34.2 °F | 51.6 °F | 3.4 in. |
| December | 25.4 °F | 39.9 °F | 3.03 in. |
| Annual | 43.6 °F | 62.2 °F | 43.84 in. |
| 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 : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Dfa - Humid Continental Hot Summers With Year Around Precipitation |