Warsaw, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 40.9 °F (low) to 61.8 °F (high). Annual precipitation averages 42.9 Inches. Warsaw is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 1 - May 10 through the first frost around Oct. 1 - Oct. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 19.9 °F | 36.3 °F | 3.28 in. |
| February | 21.4 °F | 39.5 °F | 2.47 in. |
| March | 29.0 °F | 49.4 °F | 3.52 in. |
| April | 39.0 °F | 62.9 °F | 3.99 in. |
| May | 49.5 °F | 72.4 °F | 4.2 in. |
| June | 58.5 °F | 80.5 °F | 4.86 in. |
| July | 62.2 °F | 83.9 °F | 4.19 in. |
| August | 60.5 °F | 82.8 °F | 3.96 in. |
| September | 52.8 °F | 76.6 °F | 3.28 in. |
| October | 41.3 °F | 64.7 °F | 3.02 in. |
| November | 32.0 °F | 52.0 °F | 3.01 in. |
| December | 25.0 °F | 40.8 °F | 3.15 in. |
| Annual | 40.9 °F | 61.8 °F | 42.93 in. |
| Average First Frost Date | Oct. 1 - Oct. 10 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 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 |