Grant-Valkaria, Florida has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 18.2 °C (low) to 27.8 °C (high). Annual precipitation averages 1548.9 Millimeters. Grant-Valkaria is located in USDA Plant Hardiness Zone 10a.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 11.3 °C | 22.3 °C | 67.56 mm |
| February | 12.5 °C | 23.4 °C | 77.98 mm |
| March | 14.6 °C | 25 °C | 80.52 mm |
| April | 17.3 °C | 27.6 °C | 74.17 mm |
| May | 20.2 °C | 29.8 °C | 106.17 mm |
| June | 22.4 °C | 31.6 °C | 225.55 mm |
| July | 23 °C | 32.5 °C | 198.63 mm |
| August | 23.4 °C | 32.4 °C | 199.14 mm |
| September | 23.1 °C | 31.2 °C | 213.87 mm |
| October | 20.9 °C | 28.8 °C | 146.3 mm |
| November | 16.3 °C | 25.8 °C | 87.88 mm |
| December | 13.3 °C | 23.4 °C | 71.12 mm |
| Annual | 18.2 °C | 27.8 °C | 1548.89 mm |
| Average First Frost Date | Frost Rare |
| Average Last Frost Date | |
| Average Days With Frost | Frost Rare |
| Plant Hardiness Zone | Zone 10a : -1.1°C to 1.7°C |
| Plant Hardiness Zone - 2012 | Zone 10a : -1.1°C to 1.7°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |