Gloster, Mississippi has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 12.2 °C (low) to 25 °C (high). Annual precipitation averages 1684.5 Millimeters. 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 | 2.9 °C | 15.2 °C | 175.26 mm |
| February | 4.4 °C | 17.4 °C | 153.42 mm |
| March | 8.1 °C | 21.5 °C | 138.94 mm |
| April | 11.6 °C | 25 °C | 137.41 mm |
| May | 16.2 °C | 28.8 °C | 123.95 mm |
| June | 20 °C | 32 °C | 153.42 mm |
| July | 21.3 °C | 32.8 °C | 165.1 mm |
| August | 21.2 °C | 33.1 °C | 157.73 mm |
| September | 18.2 °C | 30.9 °C | 111.51 mm |
| October | 12.2 °C | 26.4 °C | 112.01 mm |
| November | 6.8 °C | 20.5 °C | 117.86 mm |
| December | 3.9 °C | 16.2 °C | 137.92 mm |
| Annual | 12.2 °C | 25 °C | 1684.53 mm |
| 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 : -9.4°C to -6.7°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |