Middleburg, Florida has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 14.9 °C (low) to 26.5 °C (high). Annual precipitation averages 1398.8 Millimeters. Middleburg is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Jan. 21 - Jan. 31 through the first frost around Jan. 1 - Jan. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 6.3 °C | 18.4 °C | 86.87 mm |
| February | 7.7 °C | 20.1 °C | 70.36 mm |
| March | 10.4 °C | 23.3 °C | 88.65 mm |
| April | 13.8 °C | 26.8 °C | 73.15 mm |
| May | 17.9 °C | 30.1 °C | 96.27 mm |
| June | 21.4 °C | 32 °C | 200.91 mm |
| July | 22.6 °C | 33.1 °C | 189.74 mm |
| August | 22.8 °C | 32.6 °C | 183.9 mm |
| September | 21.2 °C | 31.1 °C | 191.52 mm |
| October | 16.2 °C | 27.3 °C | 102.87 mm |
| November | 10.8 °C | 22.8 °C | 50.04 mm |
| December | 7.8 °C | 20 °C | 64.52 mm |
| Annual | 14.9 °C | 26.5 °C | 1398.8 mm |
| Average First Frost Date | Jan. 1 - Jan. 10 |
| Average Last Frost Date | Jan. 21 - Jan. 31 |
| Average Days With Frost | Frost Rare |
| Plant Hardiness Zone | Zone 9a : -6.7°C to -3.9°C |
| Plant Hardiness Zone - 2012 | Zone 9a : -6.7°C to -3.9°C |
| Current Drought Conditions | Extreme Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |