Gloster, Mississippi has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 54 °F (low) to 77 °F (high). Annual precipitation averages 66.3 Inches. Gloster is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Mar. 1 - Mar. 10 through the first frost around Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 37.2 °F | 59.3 °F | 6.9 in. |
| February | 39.9 °F | 63.4 °F | 6.04 in. |
| March | 46.5 °F | 70.7 °F | 5.47 in. |
| April | 52.9 °F | 77.0 °F | 5.41 in. |
| May | 61.2 °F | 83.8 °F | 4.88 in. |
| June | 68.0 °F | 89.6 °F | 6.04 in. |
| July | 70.4 °F | 91.0 °F | 6.5 in. |
| August | 70.2 °F | 91.6 °F | 6.21 in. |
| September | 64.8 °F | 87.6 °F | 4.39 in. |
| October | 53.9 °F | 79.6 °F | 4.41 in. |
| November | 44.3 °F | 68.9 °F | 4.64 in. |
| December | 39.0 °F | 61.1 °F | 5.43 in. |
| Annual | 54 °F | 77 °F | 66.32 in. |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Mar. 1 - Mar. 10 |
| Average Days With Frost | 20-30 Days |
| Plant Hardiness Zone | Zone 8b : 15°F to 20°F |
| Plant Hardiness Zone - 2012 | Zone 8b : 15°F to 20°F |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |