Last updated: June 24, 2025
In September, the average temperature in Sleepy Hollow, United States hovers around 16°C (62°F). However, temperatures can vary significantly, with a minimum of -2°C (30°F) and a maximum reaching up to 38°C (101°F). Expect approximately 43 mm (1.7 in) of precipitation spread over 6 days, coupled with an average humidity of 79%.
In September in Sleepy Hollow, the average temperature is 16°C (62°F). Maximums can reach 38°C (101°F) and minimums can drop as low as -2°C (30°F). Be prepared for a wide range of temperatures, making it essential to pack both warm and cool clothing for your travels.
In Sleepy Hollow in September, the precipitation amount is 43 mm (1.7 in) over a period of 6 days.
In Sleepy Hollow in September, humidity is 79%. With an average temperature of 16°C (62°F), this humidity feels like a warm, enveloping blanket that makes walking outdoors feel languid and heavy, demanding frequent breaks and plenty of water as you navigate the bustling streets.
In Sleepy Hollow 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 Sleepy Hollow.
UV Risk Categories
Weather in Sleepy Hollow varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Sleepy Hollow, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -3°C (27°F) | 19 mm (0.8 inches) | 78% | moderate |
| February Weather | -5°C (23°F) | 26 mm (1.0 inches) | 79% | moderate |
| March Weather | 3°C (38°F) | 33 mm (1.3 inches) | 71% | high |
| April Weather | 6°C (42°F) | 61 mm (2.4 inches) | 70% | very high |
| May Weather | 12°C (53°F) | 67 mm (2.6 inches) | 75% | very high |
| June Weather | 19°C (67°F) | 39 mm (1.6 inches) | 82% | extreme |
| July Weather | 23°C (74°F) | 56 mm (2.2 inches) | 84% | extreme |
| August Weather | 21°C (71°F) | 35 mm (1.4 inches) | 85% | very high |
| September Weather | 16°C (62°F) | 43 mm (1.7 inches) | 79% | very high |
| October Weather | 6°C (44°F) | 47 mm (1.9 inches) | 75% | moderate |
| November Weather | 3°C (37°F) | 20 mm (0.8 inches) | 75% | moderate |
| December Weather | -1°C (30°F) | 24 mm (0.9 inches) | 81% | low |