Gulf Stream, Florida has a Tropical Rainforest climate (Köppen classification: Af). Average annual temperatures range from 69.7 °F (low) to 81.7 °F (high). Annual precipitation averages 60.5 Inches. Gulf Stream is located in USDA Plant Hardiness Zone 11a.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 59.6 °F | 74.2 °F | 3.09 in. |
| February | 61.4 °F | 75.9 °F | 2.83 in. |
| March | 64.1 °F | 77.7 °F | 3.13 in. |
| April | 68.6 °F | 80.1 °F | 3.1 in. |
| May | 72.3 °F | 83.1 °F | 4.31 in. |
| June | 75.6 °F | 86.2 °F | 8.82 in. |
| July | 76.9 °F | 87.9 °F | 5.62 in. |
| August | 77.5 °F | 88.2 °F | 7.82 in. |
| September | 76.6 °F | 86.6 °F | 8.47 in. |
| October | 73.4 °F | 83.8 °F | 6.4 in. |
| November | 67.3 °F | 79.8 °F | 4.07 in. |
| December | 63.0 °F | 76.5 °F | 2.8 in. |
| Annual | 69.7 °F | 81.7 °F | 60.46 in. |
| Average First Frost Date | No Frost |
| Average Last Frost Date | |
| Average Days With Frost | Frost Free |
| Plant Hardiness Zone | Zone 11a : 40°F to 35°F |
| Plant Hardiness Zone - 2012 | Zone 10b : 35°F to 30°F |
| Current Drought Conditions | Abnormally Dry |
| Köppen Climate Classification | Af - Tropical Rainforest |