Flushing, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 41.6 °F (low) to 60.8 °F (high). Annual precipitation averages 42.8 Inches. Flushing is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 21 - Apr. 30 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 20.3 °F | 35.8 °F | 3.24 in. |
| February | 21.9 °F | 39.0 °F | 2.47 in. |
| March | 29.5 °F | 48.5 °F | 3.42 in. |
| April | 39.8 °F | 61.7 °F | 3.84 in. |
| May | 49.9 °F | 71.0 °F | 4.23 in. |
| June | 58.9 °F | 78.8 °F | 4.81 in. |
| July | 62.8 °F | 82.4 °F | 4.14 in. |
| August | 60.7 °F | 81.4 °F | 3.83 in. |
| September | 53.9 °F | 75.7 °F | 3.58 in. |
| October | 42.8 °F | 63.5 °F | 3.06 in. |
| November | 33.4 °F | 51.3 °F | 2.99 in. |
| December | 25.8 °F | 40.4 °F | 3.14 in. |
| Annual | 41.6 °F | 60.8 °F | 42.75 in. |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 21 - Apr. 30 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -5°F to 0°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 |