Last updated: June 24, 2025
In September, the average temperature in Roslyn Heights, United States is a pleasant 21°C (70°F). You can expect a minimum of 10°C (49°F) and a maximum of 32°C (91°F), making it a versatile month for outdoor activities. However, be prepared for some rain, as precipitation averages around 91 mm (3.6 in) over 10 days. The average humidity remains at a comfortable 68%, ensuring a refreshing atmosphere throughout the month.
In September in Roslyn Heights, the average temperature is 21°C (70°F). Maximums can reach 32°C (91°F), and minimums can be as low as 10°C (49°F). This makes Roslyn Heights an ideal destination for travelers looking to enjoy mild weather and comfortable outdoor activities.
In Roslyn Heights in September, the precipitation amount totals 91 mm (3.6 in) over a span of 10 days.
In Roslyn Heights in September humidity is 68%. With an average temperature of 21°C (70°F), this humidity feels like a warm embrace, making the air feel slightly heavy and sticky, which can be quite exhausting for travelers.
In Roslyn 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 Roslyn Heights.
UV Risk Categories
Weather in Roslyn Heights varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Roslyn Heights, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 1°C (35°F) | 72 mm (2.8 inches) | 84% | moderate |
| February Weather | 2°C (37°F) | 106 mm (4.2 inches) | 82% | moderate |
| March Weather | 5°C (42°F) | 98 mm (3.9 inches) | 81% | high |
| April Weather | 10°C (51°F) | 115 mm (4.5 inches) | 78% | very high |
| May Weather | 16°C (61°F) | 117 mm (4.6 inches) | 69% | very high |
| June Weather | 22°C (71°F) | 89 mm (3.5 inches) | 69% | very high |
| July Weather | 25°C (78°F) | 142 mm (5.6 inches) | 62% | very high |
| August Weather | 24°C (76°F) | 124 mm (4.9 inches) | 65% | very high |
| September Weather | 21°C (70°F) | 91 mm (3.6 inches) | 68% | very high |
| October Weather | 16°C (61°F) | 130 mm (5.1 inches) | 74% | high |
| November Weather | 8°C (47°F) | 90 mm (3.5 inches) | 82% | moderate |
| December Weather | 4°C (39°F) | 117 mm (4.6 inches) | 80% | low |