Webster, Florida has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 60.2 °F (low) to 82.2 °F (high). Annual precipitation averages 51.8 Inches. Webster is located in USDA Plant Hardiness Zone 9b. 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 | 45.8 °F | 69.9 °F | 2.99 in. |
| February | 48.8 °F | 72.9 °F | 2.33 in. |
| March | 52.3 °F | 77.6 °F | 3.2 in. |
| April | 58.2 °F | 82.7 °F | 2.62 in. |
| May | 64.3 °F | 87.9 °F | 3.3 in. |
| June | 70.5 °F | 90.2 °F | 7.67 in. |
| July | 72.2 °F | 91.0 °F | 7.96 in. |
| August | 72.6 °F | 90.9 °F | 8.08 in. |
| September | 70.9 °F | 89.2 °F | 6.6 in. |
| October | 63.6 °F | 84.2 °F | 2.69 in. |
| November | 54.4 °F | 77.3 °F | 1.85 in. |
| December | 49.2 °F | 72.1 °F | 2.55 in. |
| Annual | 60.2 °F | 82.2 °F | 51.84 in. |
| 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 9b : 25°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 9a : 20°F to 25°F |
| Current Drought Conditions | Severe Drought |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |