Ricardo, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 16.9 °C (low) to 28.5 °C (high). Annual precipitation averages 675.9 Millimeters. Ricardo is located in USDA Plant Hardiness Zone 9b.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 7.8 °C | 20 °C | 30.73 mm |
| February | 10.2 °C | 22.4 °C | 36.07 mm |
| March | 13.6 °C | 25.2 °C | 44.96 mm |
| April | 17 °C | 28.7 °C | 38.1 mm |
| May | 21.1 °C | 31.6 °C | 67.56 mm |
| June | 23.6 °C | 34.2 °C | 91.44 mm |
| July | 24.1 °C | 35.1 °C | 65.28 mm |
| August | 24.1 °C | 35.8 °C | 58.17 mm |
| September | 22.2 °C | 33.1 °C | 111 mm |
| October | 17.6 °C | 30 °C | 60.71 mm |
| November | 12.6 °C | 24.8 °C | 29.97 mm |
| December | 8.9 °C | 21.1 °C | 41.91 mm |
| Annual | 16.9 °C | 28.5 °C | 675.9 mm |
| Average First Frost Date | Frost Rare |
| Average Last Frost Date | |
| Average Days With Frost | Frost Rare |
| Plant Hardiness Zone | Zone 9b : -3.9°C to -1.1°C |
| Plant Hardiness Zone - 2012 | Zone 9b : -3.9°C to -1.1°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |