September Weather in Rockland, United States

Last updated: June 24, 2025

In September, the average temperature in Rockland, United States hovers around 18°C (64°F). Expect a cool minimum of 3°C (38°F) and a warm maximum reaching up to 33°C (92°F). This month sees approximately 105 mm (4.1 in) of precipitation spread over 10 days, with an average humidity level of 74%.

September Temperature in Rockland

In September in Rockland, the average temperature is 18°C (64°F). The maximum can reach 33°C (92°F), and the minimum can be as low as 3°C (38°F). This is a great time to pack both light clothing for the warm afternoons and a warmer layer for the cooler evenings while enjoying your travels.

September Weather in Rockland: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Rockland, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rockland, September typically has an average temperature of 18°C (64°F), with highs reaching up to 33°C (92°F) and lows dropping to around 3°C (38°F).

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

September Precipitation in Rockland

In Rockland in September, the precipitation amount is 105 mm (4.1 in) over the course of 10 days.

September Precipitation Trends in Rockland

The chart displays monthly precipitation patterns in Rockland, 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 Rockland, September typically receives around 105 mm (4.1 inches) of precipitation spread over approximately 10 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Rockland

In Rockland in September humidity is 74%. With an average temperature of 18°C (64°F), this humidity feels like a warm embrace, making it ideal for leisurely strolls but potentially uncomfortable for extended outdoor activities.

September Average Humidity in Rockland

This chart illustrates the average monthly humidity levels in Rockland, 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 Rockland is approximately 74%, 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 Rockland

In Rockland in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Rockland.

Maximum UV Index Levels in Rockland for September

The chart shows the monthly maximum UV Index (UVI) for Rockland 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 Rockland typically reaches 7, which falls under the high exposure category.

Data source: Rockland 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 Rockland Compares to Other Months

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

This table compares monthly weather conditions in Rockland, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-7°C (19°F)	36 mm (1.4 inches)	84%	low
February Weather	-6°C (21°F)	50 mm (2.0 inches)	85%	moderate
March Weather	2°C (35°F)	57 mm (2.2 inches)	84%	moderate
April Weather	7°C (45°F)	86 mm (3.4 inches)	83%	very high
May Weather	15°C (59°F)	137 mm (5.4 inches)	75%	very high
June Weather	21°C (71°F)	125 mm (4.9 inches)	79%	very high
July Weather	23°C (74°F)	100 mm (3.9 inches)	75%	very high
August Weather	21°C (70°F)	121 mm (4.8 inches)	69%	very high
September Weather	18°C (64°F)	105 mm (4.1 inches)	74%	high
October Weather	10°C (50°F)	114 mm (4.5 inches)	79%	moderate
November Weather	2°C (35°F)	51 mm (2.0 inches)	88%	moderate
December Weather	-3°C (27°F)	45 mm (1.8 inches)	82%	low