Gautier, Mississippi has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 16.1 °C (low) to 24.7 °C (high). Annual precipitation averages 1721.1 Millimeters. Gautier is located in USDA Plant Hardiness Zone 9a.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 6.4 °C | 15.9 °C | 148.08 mm |
| February | 7.9 °C | 17.6 °C | 110.24 mm |
| March | 11.6 °C | 20.8 °C | 136.65 mm |
| April | 15.7 °C | 24.2 °C | 137.92 mm |
| May | 20.3 °C | 28 °C | 134.87 mm |
| June | 23.4 °C | 30.8 °C | 176.02 mm |
| July | 24.4 °C | 31.9 °C | 213.36 mm |
| August | 24.4 °C | 32 °C | 183.64 mm |
| September | 22.4 °C | 30.4 °C | 148.08 mm |
| October | 17.3 °C | 26.3 °C | 103.89 mm |
| November | 11.4 °C | 21.1 °C | 106.93 mm |
| December | 7.8 °C | 17.1 °C | 121.41 mm |
| Annual | 16.1 °C | 24.7 °C | 1721.09 mm |
| Average First Frost Date | Frost Rare |
| Average Last Frost Date | |
| Average Days With Frost | Frost Rare |
| Plant Hardiness Zone | Zone 9a : -6.7°C to -3.9°C |
| Plant Hardiness Zone - 2012 | Zone 9a : -6.7°C to -3.9°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |