Glencoe, Florida has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 16.9 °C (low) to 27.1 °C (high). Annual precipitation averages 1363.5 Millimeters. Glencoe is located in USDA Plant Hardiness Zone 10a.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 9.1 °C | 20.8 °C | 75.18 mm |
| February | 10.4 °C | 22.1 °C | 60.71 mm |
| March | 12.7 °C | 24.2 °C | 76.96 mm |
| April | 15.8 °C | 26.8 °C | 68.07 mm |
| May | 19 °C | 29.4 °C | 105.16 mm |
| June | 22 °C | 31.4 °C | 171.7 mm |
| July | 22.9 °C | 32.4 °C | 147.57 mm |
| August | 23.2 °C | 32.3 °C | 167.89 mm |
| September | 22.4 °C | 31 °C | 229.62 mm |
| October | 19.2 °C | 28.3 °C | 121.41 mm |
| November | 14.7 °C | 24.7 °C | 69.34 mm |
| December | 11.2 °C | 22 °C | 69.85 mm |
| Annual | 16.9 °C | 27.1 °C | 1363.46 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 9b : -3.9°C to -1.1°C |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |