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September Weather in Fall River, United States

Last updated: June 24, 2025

In September, the average temperature in Fall River, United States hovers around 19°C (67°F), with temperatures ranging from a cool minimum of 6°C (43°F) to a warm maximum of 33°C (91°F). Visitors can expect about 97 mm (3.8 in) of precipitation spread over 9 days, complemented by an average humidity of 75%. Be prepared for a mix of pleasant warmth and occasional showers!

September Temperature in Fall River

In September in Fall River, the average temperature is 19°C (67°F). Maximum temperatures can reach up to 33°C (91°F), while the minimum can drop to as low as 6°C (43°F). This weather makes Fall River a perfect destination for travelers seeking both warm days and cool evenings.

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

The chart illustrates September temperature patterns in Fall River, 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, September typically has an average temperature of 19°C (67°F), with highs reaching up to 33°C (91°F) and lows dropping to around 6°C (43°F).
JanFebMarAprMayJunJulAugSepOctNovDec333539485868747367574536
Data source: Temperature data for Fall River generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Fall River

In Fall River in September, the total precipitation amount reaches 97 mm (3.8 in) over the course of 9 days.

September Precipitation Trends in Fall River

The chart displays monthly precipitation patterns in Fall River, 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, September typically receives around 97 mm (3.8 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec7492102123101971229297135101120
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Fall River

In Fall River in September humidity is 75%. With an average temperature of 19°C (67°F), this humidity feels like a warm embrace, making travel invigorating yet slightly sticky, as you navigate through the vibrant streets or scenic landscapes.

September Average Humidity in Fall River

This chart illustrates the average monthly humidity levels in Fall River, 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 is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%84%82%79%75%78%76%76%76%75%80%80%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Fall River

In Fall River 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 Fall River.

Maximum UV Index Levels in Fall River for September

The chart shows the monthly maximum UV Index (UVI) for Fall River 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 typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3568910998642
Data source: Fall River 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 Compares to Other Months

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

This table compares monthly weather conditions in Fall River, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (33°F)74 mm (2.9 inches)84%moderate
February Weather1°C (35°F)92 mm (3.6 inches)84%moderate
March Weather4°C (39°F)102 mm (4.0 inches)82%high
April Weather9°C (49°F)123 mm (4.9 inches)79%very high
May Weather15°C (58°F)101 mm (4.0 inches)75%very high
June Weather20°C (68°F)97 mm (3.8 inches)78%very high
July Weather23°C (74°F)122 mm (4.8 inches)76%very high
August Weather23°C (74°F)92 mm (3.6 inches)76%very high
September Weather19°C (67°F)97 mm (3.8 inches)75%very high
October Weather14°C (57°F)135 mm (5.3 inches)75%high
November Weather7°C (45°F)101 mm (4.0 inches)80%moderate
December Weather2°C (36°F)120 mm (4.7 inches)80%low

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