Pleasant Grove, Alabama has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 52.5 °F (low) to 73.7 °F (high). Annual precipitation averages 58.3 Inches. Pleasant Grove 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. 1 - Nov. 10.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 34.2 °F | 54.1 °F | 5.24 in. |
| February | 36.8 °F | 58.6 °F | 5.54 in. |
| March | 43.7 °F | 66.5 °F | 5.66 in. |
| April | 50.9 °F | 74.5 °F | 5.15 in. |
| May | 59.9 °F | 81.4 °F | 4.42 in. |
| June | 67.5 °F | 87.4 °F | 4.91 in. |
| July | 70.7 °F | 90.5 °F | 5.05 in. |
| August | 70.2 °F | 90.0 °F | 4.3 in. |
| September | 64.6 °F | 85.6 °F | 4.59 in. |
| October | 53.0 °F | 75.4 °F | 3.39 in. |
| November | 42.3 °F | 64.6 °F | 4.8 in. |
| December | 36.6 °F | 56.3 °F | 5.27 in. |
| Annual | 52.5 °F | 73.7 °F | 58.32 in. |
| Average First Frost Date | Nov. 1 - Nov. 10 |
| Average Last Frost Date | Mar. 21 - Mar. 31 |
| Average Days With Frost | 50-75 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 |