Last updated: June 24, 2025
In September, the average temperature in Brooklyn Heights, United States is a pleasant 20°C (68°F), with minimums dipping to 8°C (47°F) and occasionally reaching a warm 32°C (90°F). Be prepared for some moisture, as you'll experience around 81 mm (3.2 inches) of precipitation over 11 days. With an average humidity of 77%, make sure to stay hydrated and enjoy the vibrant atmosphere!
In September in Brooklyn Heights, the average temperature is 20°C (68°F). Maximums can reach 32°C (90°F) while minimums can drop to as low as 8°C (47°F). This makes Brooklyn Heights a favorable destination for travelers seeking mild weather with the potential for warmer days.
In Brooklyn Heights in September, the precipitation amount is 81 mm (3.2 in) over a span of 11 days.
In Brooklyn Heights in September, humidity is 77%. With an average temperature of 20°C (68°F), this humidity feels like a warm, sticky embrace, making it essential for travelers to stay hydrated and take breaks in shaded areas to avoid feeling sluggish in the heat.
In Brooklyn Heights in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Brooklyn Heights.
UV Risk Categories
Weather in Brooklyn Heights varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Brooklyn Heights, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -1°C (30°F) | 84 mm (3.3 inches) | 88% | moderate |
| February Weather | 0°C (32°F) | 89 mm (3.5 inches) | 88% | moderate |
| March Weather | 3°C (39°F) | 90 mm (3.6 inches) | 87% | high |
| April Weather | 9°C (48°F) | 116 mm (4.6 inches) | 87% | very high |
| May Weather | 15°C (60°F) | 125 mm (4.9 inches) | 81% | very high |
| June Weather | 21°C (70°F) | 118 mm (4.7 inches) | 83% | very high |
| July Weather | 24°C (75°F) | 128 mm (5.1 inches) | 82% | very high |
| August Weather | 23°C (73°F) | 90 mm (3.6 inches) | 76% | very high |
| September Weather | 20°C (68°F) | 81 mm (3.2 inches) | 77% | very high |
| October Weather | 14°C (58°F) | 115 mm (4.5 inches) | 82% | high |
| November Weather | 6°C (43°F) | 101 mm (4.0 inches) | 89% | moderate |
| December Weather | 2°C (36°F) | 93 mm (3.7 inches) | 86% | low |