Omar, West Virginia has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 7 °C (low) to 19.4 °C (high). Annual precipitation averages 1269.8 Millimeters. Omar 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 | -3.9 °C | 6.4 °C | 92.46 mm |
| February | -2.6 °C | 8.8 °C | 88.9 mm |
| March | 0.8 °C | 13.8 °C | 111.25 mm |
| April | 6 °C | 20.8 °C | 114.05 mm |
| May | 11.4 °C | 24.8 °C | 130.3 mm |
| June | 16.1 °C | 28.6 °C | 126.49 mm |
| July | 18.3 °C | 30.2 °C | 149.35 mm |
| August | 17.7 °C | 29.6 °C | 106.68 mm |
| September | 13.9 °C | 26.7 °C | 86.87 mm |
| October | 7.1 °C | 20.5 °C | 79.25 mm |
| November | 1.3 °C | 13.8 °C | 77.47 mm |
| December | -1.7 °C | 8.3 °C | 106.68 mm |
| Annual | 7 °C | 19.4 °C | 1269.75 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 | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |