Belpre, Ohio has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 5.8 °C (low) to 18.4 °C (high). Annual precipitation averages 1115.1 Millimeters. Belpre is located in USDA Plant Hardiness Zone 7a. 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 | -5.6 °C | 4.6 °C | 83.31 mm |
| February | -4.7 °C | 6.6 °C | 74.68 mm |
| March | -1.1 °C | 11.8 °C | 99.06 mm |
| April | 4.6 °C | 19.6 °C | 96.52 mm |
| May | 10.3 °C | 24.1 °C | 112.01 mm |
| June | 15.3 °C | 28.3 °C | 118.62 mm |
| July | 17.4 °C | 30.1 °C | 119.38 mm |
| August | 16.8 °C | 29.7 °C | 89.66 mm |
| September | 12.7 °C | 26.2 °C | 86.36 mm |
| October | 5.8 °C | 19.9 °C | 73.91 mm |
| November | 0.4 °C | 12.9 °C | 75.69 mm |
| December | -2.8 °C | 7 °C | 85.85 mm |
| Annual | 5.8 °C | 18.4 °C | 1115.05 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 7a : -17.8°C to -15°C |
| Plant Hardiness Zone - 2012 | Zone 6b : -20.6°C to -17.8°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |