Astor, Florida has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 15.1 °C (low) to 27.8 °C (high). Annual precipitation averages 1404.6 Millimeters. Astor is located in USDA Plant Hardiness Zone 9b.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 6.8 °C | 20.7 °C | 79.5 mm |
| February | 8.3 °C | 22.3 °C | 62.74 mm |
| March | 10.2 °C | 24.8 °C | 80.52 mm |
| April | 13.7 °C | 28.3 °C | 72.9 mm |
| May | 17.1 °C | 31.1 °C | 99.06 mm |
| June | 21 °C | 32.8 °C | 207.01 mm |
| July | 21.9 °C | 33.6 °C | 193.04 mm |
| August | 22.4 °C | 33.3 °C | 213.61 mm |
| September | 21.3 °C | 31.7 °C | 181.86 mm |
| October | 17 °C | 28.7 °C | 95.76 mm |
| November | 12.1 °C | 24.6 °C | 53.09 mm |
| December | 8.9 °C | 21.8 °C | 65.53 mm |
| Annual | 15.1 °C | 27.8 °C | 1404.62 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 9a : -6.7°C to -3.9°C |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |