Grandview, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 6.9 °C (low) to 17.9 °C (high). Annual precipitation averages 1173 Millimeters. Grandview is located in USDA Plant Hardiness Zone 6b. The growing season typically runs from the last frost around Apr. 11 - Apr. 20 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -5.2 °C | 3.8 °C | 89.41 mm |
| February | -4.1 °C | 6 °C | 71.37 mm |
| March | 0.5 °C | 11.6 °C | 105.16 mm |
| April | 6.3 °C | 18.6 °C | 117.86 mm |
| May | 11.9 °C | 23.5 °C | 127.51 mm |
| June | 16.9 °C | 28.1 °C | 123.44 mm |
| July | 18.6 °C | 29.8 °C | 105.66 mm |
| August | 17.8 °C | 29.6 °C | 84.33 mm |
| September | 13.8 °C | 26.1 °C | 83.57 mm |
| October | 7.2 °C | 19.4 °C | 83.57 mm |
| November | 1.6 °C | 12 °C | 86.87 mm |
| December | -2.6 °C | 6 °C | 94.23 mm |
| Annual | 6.9 °C | 17.9 °C | 1172.98 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 100-125 Days |
| Plant Hardiness Zone | Zone 6b : -20.6°C to -17.8°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 |