Northdale, Florida has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 17.1 °C (low) to 28.3 °C (high). Annual precipitation averages 1431.8 Millimeters. Northdale is located in USDA Plant Hardiness Zone 9b.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 9.4 °C | 21.9 °C | 81.53 mm |
| February | 10.9 °C | 23.4 °C | 64.01 mm |
| March | 13.1 °C | 25.7 °C | 66.8 mm |
| April | 16.4 °C | 28.6 °C | 70.61 mm |
| May | 19.7 °C | 31.3 °C | 85.85 mm |
| June | 22.5 °C | 32.6 °C | 215.9 mm |
| July | 23.2 °C | 32.8 °C | 237.49 mm |
| August | 23.4 °C | 32.8 °C | 246.63 mm |
| September | 22.5 °C | 32.2 °C | 183.39 mm |
| October | 18.9 °C | 29.3 °C | 69.6 mm |
| November | 14 °C | 25.9 °C | 45.21 mm |
| December | 11.1 °C | 23 °C | 64.77 mm |
| Annual | 17.1 °C | 28.3 °C | 1431.79 mm |
| Average First Frost Date | Frost Rare |
| Average Last Frost Date | |
| Average Days With Frost | Frost Free |
| 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 |