September Weather in Red Hook, United States

Last updated: June 24, 2025

In September, the average temperature in Red Hook, United States hovers around 18°C (65°F). However, be prepared for temperature swings: it can drop as low as 3°C (37°F) or rise to a scorching 32°C (90°F). Expect about 98 mm (3.8 in) of precipitation over 9 days, contributing to an average humidity of 68%.

September Temperature in Red Hook

In September in Red Hook, the average temperature is 18°C (65°F). Maximum temperatures can reach up to 32°C (90°F), while the minimum can drop as low as 3°C (37°F). This varying climate makes it essential for travelers to pack for both warm and cool conditions.

September Weather in Red Hook: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Red Hook, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Red Hook, September typically has an average temperature of 18°C (65°F), with highs reaching up to 32°C (90°F) and lows dropping to around 3°C (37°F).

Data source: Temperature data for Red Hook generated using information from the Copernicus Climate Change Service.

September Precipitation in Red Hook

In Red Hook in September, the precipitation amount is 98 mm (3.8 in) occurring over the course of 9 days.

September Precipitation Trends in Red Hook

The chart displays monthly precipitation patterns in Red Hook, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Red Hook, September typically receives around 98 mm (3.8 inches) of precipitation spread over approximately 9 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

September Humidity in Red Hook

In Red Hook in September, humidity is 68%. With an average temperature of 18°C (65°F), this humidity feels like a warm, enveloping blanket, making travel somewhat sticky and requiring occasional breaks for refreshing hydration.

September Average Humidity in Red Hook

This chart illustrates the average monthly humidity levels in Red Hook, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Red Hook is approximately 68%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Red Hook

In Red Hook 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 Red Hook.

Maximum UV Index Levels in Red Hook for September

The chart shows the monthly maximum UV Index (UVI) for Red Hook in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Red Hook typically reaches 8, which falls under the very high exposure category.

Data source: Red Hook September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How September Weather in Red Hook Compares to Other Months

Weather in Red Hook varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Red Hook, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Red Hook, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-2°C (28°F)	74 mm (2.9 inches)	84%	moderate
February Weather	-1°C (31°F)	92 mm (3.6 inches)	82%	moderate
March Weather	3°C (37°F)	85 mm (3.3 inches)	81%	high
April Weather	9°C (48°F)	141 mm (5.6 inches)	78%	very high
May Weather	15°C (59°F)	126 mm (5.0 inches)	69%	very high
June Weather	20°C (68°F)	100 mm (3.9 inches)	69%	very high
July Weather	23°C (74°F)	149 mm (5.9 inches)	62%	very high
August Weather	22°C (72°F)	126 mm (4.9 inches)	65%	very high
September Weather	18°C (65°F)	98 mm (3.8 inches)	68%	very high
October Weather	13°C (55°F)	153 mm (6.0 inches)	74%	high
November Weather	5°C (41°F)	97 mm (3.8 inches)	82%	moderate
December Weather	0°C (33°F)	108 mm (4.2 inches)	80%	low