Brownsville, Ohio has a Humid Continental Hot Summers With Year Around Precipitation climate (Köppen classification: Dfa). Average annual temperatures range from 5.2 °C (low) to 16.4 °C (high). Annual precipitation averages 1075.4 Millimeters. Brownsville 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. 11 - Oct. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -6.7 °C | 2.3 °C | 81.79 mm |
| February | -5.8 °C | 4.1 °C | 65.28 mm |
| March | -1.4 °C | 9.7 °C | 90.17 mm |
| April | 4.3 °C | 17 °C | 100.84 mm |
| May | 10 °C | 22.3 °C | 104.65 mm |
| June | 15 °C | 26.7 °C | 117.09 mm |
| July | 17 °C | 28.5 °C | 108.71 mm |
| August | 15.9 °C | 27.9 °C | 92.71 mm |
| September | 11.8 °C | 24.6 °C | 85.6 mm |
| October | 5.4 °C | 18.1 °C | 73.66 mm |
| November | 0.2 °C | 10.8 °C | 76.2 mm |
| December | -3.8 °C | 4.8 °C | 78.74 mm |
| Annual | 5.2 °C | 16.4 °C | 1075.44 mm |
| Average First Frost Date | Oct. 11 - Oct. 20 |
| Average Last Frost Date | May 1 - May 10 |
| Average Days With Frost | 125-150 Days |
| Plant Hardiness Zone | Zone 6a : -23.3°C to -20.6°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 |