September Weather in Fall River Mills, United States

Last updated: June 24, 2025

In September, the average temperature in Fall River Mills, United States hovers around 17°C (64°F), with an impressive range that can dip to a chilly 1°C (33°F) or soar to a sweltering 37°C (99°F). Expect 20 mm (0.8 in) of precipitation spread over just 3 days, and enjoy an average humidity of 46% as you experience the unique climate of this vibrant locale.

September Temperature in Fall River Mills

In September in Fall River Mills, the average temperature is 17°C (64°F), with maximums reaching up to 37°C (99°F) and minimums dropping as low as 1°C (33°F). Be prepared for a wide range of temperatures when planning your travels.

September Weather in Fall River Mills: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Fall River Mills, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Fall River Mills, September typically has an average temperature of 17°C (64°F), with highs reaching up to 37°C (99°F) and lows dropping to around 1°C (33°F).

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

September Precipitation in Fall River Mills

In Fall River Mills in September, the precipitation amount is 20 mm (0.8 in) accumulated over a period of 3 days.

September Precipitation Trends in Fall River Mills

The chart displays monthly precipitation patterns in Fall River Mills, 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 Fall River Mills, September typically receives around 20 mm (0.8 inches) of precipitation spread over approximately 3 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 Fall River Mills

In Fall River Mills in September, humidity is 46%. With an average temperature of 17°C (64°F), this humidity feels like a gentle embrace, making it quite pleasant for traveling as it adds a refreshing touch to your explorations.

September Average Humidity in Fall River Mills

This chart illustrates the average monthly humidity levels in Fall River Mills, 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 Fall River Mills is approximately 46%, 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 Fall River Mills

In Fall River Mills in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Fall River Mills.

Maximum UV Index Levels in Fall River Mills for September

The chart shows the monthly maximum UV Index (UVI) for Fall River Mills 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 Fall River Mills typically reaches 9, which falls under the very high exposure category.

Data source: Fall River Mills 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 Fall River Mills Compares to Other Months

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

This table compares monthly weather conditions in Fall River Mills, 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 (36°F)	132 mm (5.2 inches)	86%	moderate
February Weather	2°C (37°F)	137 mm (5.4 inches)	87%	moderate
March Weather	5°C (41°F)	125 mm (4.9 inches)	86%	high
April Weather	9°C (48°F)	76 mm (3.0 inches)	83%	very high
May Weather	13°C (56°F)	49 mm (1.9 inches)	72%	extreme
June Weather	19°C (67°F)	14 mm (0.6 inches)	67%	extreme
July Weather	24°C (75°F)	4 mm (0.2 inches)	56%	extreme
August Weather	23°C (73°F)	6 mm (0.2 inches)	42%	very high
September Weather	17°C (64°F)	20 mm (0.8 inches)	46%	very high
October Weather	11°C (51°F)	43 mm (1.7 inches)	67%	high
November Weather	5°C (42°F)	74 mm (2.9 inches)	86%	moderate
December Weather	1°C (35°F)	105 mm (4.1 inches)	86%	moderate