Gateway, Florida has a Tropical Savanna (Wet and Dry Climate) climate (Köppen classification: Aw). Average annual temperatures range from 18 °C (low) to 29 °C (high). Annual precipitation averages 1453.2 Millimeters. Gateway is located in USDA Plant Hardiness Zone 10a.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 11.2 °C | 23.7 °C | 51.31 mm |
| February | 12.5 °C | 25.2 °C | 50.04 mm |
| March | 14.1 °C | 26.8 °C | 57.66 mm |
| April | 16.9 °C | 29.1 °C | 67.31 mm |
| May | 19.6 °C | 31.2 °C | 88.65 mm |
| June | 22.3 °C | 32.4 °C | 264.92 mm |
| July | 23.2 °C | 32.8 °C | 234.95 mm |
| August | 23.5 °C | 32.9 °C | 244.86 mm |
| September | 23 °C | 32.2 °C | 216.92 mm |
| October | 20.3 °C | 30.1 °C | 81.28 mm |
| November | 15.8 °C | 27.1 °C | 47.24 mm |
| December | 13.2 °C | 24.9 °C | 48.01 mm |
| Annual | 18 °C | 29 °C | 1453.15 mm |
| Average First Frost Date | No Frost |
| Average Last Frost Date | |
| Average Days With Frost | Frost Free |
| Plant Hardiness Zone | Zone 10a : -1.1°C to 1.7°C |
| Plant Hardiness Zone - 2012 | Zone 10a : -1.1°C to 1.7°C |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Aw - Tropical Savanna (Wet and Dry Climate) |