Mendota, Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 7.3 °C (low) to 20.2 °C (high). Annual precipitation averages 1266.2 Millimeters. Mendota 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 | -3.1 °C | 7.8 °C | 105.92 mm |
| February | -1.8 °C | 10.1 °C | 108.46 mm |
| March | 1.8 °C | 14.9 °C | 112.78 mm |
| April | 6.6 °C | 21.1 °C | 117.35 mm |
| May | 11.6 °C | 25.3 °C | 109.22 mm |
| June | 16.1 °C | 28.8 °C | 127 mm |
| July | 18.2 °C | 30.4 °C | 124.21 mm |
| August | 17.5 °C | 29.9 °C | 106.43 mm |
| September | 13.9 °C | 27.4 °C | 80.77 mm |
| October | 7.2 °C | 21.6 °C | 76.71 mm |
| November | 1.3 °C | 14.9 °C | 80.01 mm |
| December | -1.4 °C | 9.7 °C | 117.35 mm |
| Annual | 7.3 °C | 20.2 °C | 1266.21 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 11 - Apr. 20 |
| Average Days With Frost | 75-100 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 | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |