Crosby, Mississippi has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 12.7 °C (low) to 25.1 °C (high). Annual precipitation averages 1654.3 Millimeters. Crosby is located in USDA Plant Hardiness Zone 8b. The growing season typically runs from the last frost around Feb. 21 - Feb. 29 through the first frost around Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 3.3 °C | 15.2 °C | 171.7 mm |
| February | 4.8 °C | 17.8 °C | 149.86 mm |
| March | 8.7 °C | 21.6 °C | 140.21 mm |
| April | 12.3 °C | 25.2 °C | 136.65 mm |
| May | 16.8 °C | 28.8 °C | 124.46 mm |
| June | 20.7 °C | 32 °C | 148.34 mm |
| July | 21.9 °C | 32.9 °C | 155.19 mm |
| August | 21.7 °C | 33.2 °C | 149.1 mm |
| September | 18.8 °C | 31 °C | 111.76 mm |
| October | 12.4 °C | 26.4 °C | 110.24 mm |
| November | 7.2 °C | 20.6 °C | 118.11 mm |
| December | 4.3 °C | 16.6 °C | 138.68 mm |
| Annual | 12.7 °C | 25.1 °C | 1654.3 mm |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Feb. 21 - Feb. 29 |
| 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 |