Hernando Beach, Florida has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 17.5 °C (low) to 26.8 °C (high). Annual precipitation averages 1391.4 Millimeters. Hernando Beach is located in USDA Plant Hardiness Zone 9b.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 9.6 °C | 20.3 °C | 80.01 mm |
| February | 11.2 °C | 21.4 °C | 68.33 mm |
| March | 13.5 °C | 23.7 °C | 81.28 mm |
| April | 16.8 °C | 26.4 °C | 69.85 mm |
| May | 20.2 °C | 29.2 °C | 64.26 mm |
| June | 23.2 °C | 31.2 °C | 195.58 mm |
| July | 24 °C | 31.8 °C | 227.33 mm |
| August | 24 °C | 31.9 °C | 243.59 mm |
| September | 22.8 °C | 31.4 °C | 177.29 mm |
| October | 19.2 °C | 28.3 °C | 62.23 mm |
| November | 14.3 °C | 24.5 °C | 51.05 mm |
| December | 11.3 °C | 21.7 °C | 70.61 mm |
| Annual | 17.5 °C | 26.8 °C | 1391.41 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 | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |