Sanford, Florida has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 16.4 °C (low) to 28 °C (high). Annual precipitation averages 1377.4 Millimeters. Sanford is located in USDA Plant Hardiness Zone 9b.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 8.6 °C | 21.3 °C | 73.91 mm |
| February | 9.9 °C | 22.8 °C | 61.72 mm |
| March | 12.2 °C | 25.3 °C | 83.82 mm |
| April | 15.2 °C | 28.2 °C | 73.66 mm |
| May | 18.6 °C | 30.9 °C | 92.46 mm |
| June | 21.9 °C | 32.5 °C | 197.36 mm |
| July | 22.9 °C | 33.4 °C | 187.96 mm |
| August | 23.1 °C | 33.3 °C | 202.69 mm |
| September | 22.2 °C | 31.8 °C | 180.34 mm |
| October | 18.4 °C | 29 °C | 104.39 mm |
| November | 13.7 °C | 25.2 °C | 56.9 mm |
| December | 10.5 °C | 22.6 °C | 62.23 mm |
| Annual | 16.4 °C | 28 °C | 1377.44 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 | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |