Alabaster, Alabama has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 51.8 °F (low) to 74.9 °F (high). Annual precipitation averages 57.1 Inches. Alabaster is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 21 - Mar. 31 through the first frost around Nov. 11 - Nov. 20.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 33.7 °F | 55.5 °F | 5.31 in. |
| February | 36.7 °F | 60.0 °F | 5.71 in. |
| March | 43.1 °F | 67.9 °F | 5.49 in. |
| April | 50.1 °F | 75.4 °F | 5.23 in. |
| May | 59.1 °F | 82.5 °F | 4.25 in. |
| June | 66.7 °F | 88.5 °F | 4.75 in. |
| July | 70.0 °F | 91.4 °F | 4.6 in. |
| August | 69.4 °F | 91.0 °F | 4.5 in. |
| September | 63.8 °F | 86.7 °F | 4.09 in. |
| October | 52.0 °F | 76.6 °F | 3.28 in. |
| November | 41.3 °F | 65.8 °F | 4.56 in. |
| December | 36.1 °F | 57.6 °F | 5.28 in. |
| Annual | 51.8 °F | 74.9 °F | 57.05 in. |
| Average First Frost Date | Nov. 11 - Nov. 20 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 40-50 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8a : 10°F to 15°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |