September Weather in Harrisville, United States

Last updated: June 24, 2025

In September, the average temperature in Harrisville, United States hovers around 16°C (61°F). There's a wide temperature range, with minimums dipping to -2°C (29°F) and maximums soaring to 31°C (89°F). Expect 84 mm (3.3 in) of precipitation spread over 10 days, contributing to an average humidity of 72%.

September Temperature in Harrisville

In September in Harrisville, the average temperature is 16°C (61°F). Maximum temperatures can reach 31°C (89°F), while minimums can drop as low as -2°C (29°F). Be prepared for a wide range of temperatures when traveling during this time.

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

The chart illustrates September temperature patterns in Harrisville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Harrisville, September typically has an average temperature of 16°C (61°F), with highs reaching up to 31°C (89°F) and lows dropping to around -2°C (29°F).

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

September Precipitation in Harrisville

In Harrisville in September, the precipitation amount is 84 mm (3.3 in) over a span of 10 days.

September Precipitation Trends in Harrisville

The chart displays monthly precipitation patterns in Harrisville, 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 Harrisville, September typically receives around 84 mm (3.3 inches) of precipitation spread over approximately 10 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 Harrisville

In Harrisville in September humidity is 72%. With an average temperature of 16°C (61°F), this humidity feels like a damp blanket wrapping around you, making every step feel heavier and requiring extra effort while traveling.

September Average Humidity in Harrisville

This chart illustrates the average monthly humidity levels in Harrisville, 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 Harrisville is approximately 72%, 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 Harrisville

In Harrisville 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 Harrisville.

Maximum UV Index Levels in Harrisville for September

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

Data source: Harrisville 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 Harrisville Compares to Other Months

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

This table compares monthly weather conditions in Harrisville, 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 (20°F)	100 mm (3.9 inches)	93%	low
February Weather	-5°C (23°F)	94 mm (3.7 inches)	93%	moderate
March Weather	-1°C (30°F)	99 mm (3.9 inches)	86%	high
April Weather	6°C (43°F)	127 mm (5.0 inches)	82%	very high
May Weather	13°C (56°F)	117 mm (4.6 inches)	75%	very high
June Weather	18°C (65°F)	119 mm (4.7 inches)	68%	very high
July Weather	21°C (70°F)	148 mm (5.8 inches)	69%	very high
August Weather	20°C (68°F)	123 mm (4.9 inches)	67%	very high
September Weather	16°C (61°F)	84 mm (3.3 inches)	72%	high
October Weather	10°C (50°F)	169 mm (6.7 inches)	83%	moderate
November Weather	2°C (35°F)	127 mm (5.0 inches)	88%	moderate
December Weather	-3°C (26°F)	102 mm (4.0 inches)	89%	low