Ramona, Oklahoma has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 8.8 °C (low) to 21.6 °C (high). Annual precipitation averages 1024.4 Millimeters. Ramona is located in USDA Plant Hardiness Zone 7a. The growing season typically runs from the last frost around Apr. 1 - Apr. 10 through the first frost around Oct. 21 - Oct. 31.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | -3.9 °C | 8.5 °C | 40.64 mm |
| February | -2 °C | 11.3 °C | 49.28 mm |
| March | 2.9 °C | 16.3 °C | 79.76 mm |
| April | 8.1 °C | 21.6 °C | 114.3 mm |
| May | 14.1 °C | 25.7 °C | 140.46 mm |
| June | 19.2 °C | 30.6 °C | 124.71 mm |
| July | 21.5 °C | 33.6 °C | 98.81 mm |
| August | 20.4 °C | 33.5 °C | 87.63 mm |
| September | 15.7 °C | 29.1 °C | 87.63 mm |
| October | 8.9 °C | 22.9 °C | 82.04 mm |
| November | 2.6 °C | 15.9 °C | 66.04 mm |
| December | -2.2 °C | 9.8 °C | 53.09 mm |
| Annual | 8.8 °C | 21.6 °C | 1024.39 mm |
| Average First Frost Date | Oct. 21 - Oct. 31 |
| Average Last Frost Date | Apr. 1 - Apr. 10 |
| 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 |