September Weather in Harrisville, United States

Last updated: June 24, 2025

In September, the average temperature in Harrisville, United States hovers around 17°C (63°F), with a minimum of 9°C (49°F) and a maximum of 24°C (75°F). Expect a bit of wet weather, as 81 mm (3.2 in) of precipitation typically falls over 11 days. The air is quite humid, with an average humidity level of 79%.

September Temperature in Harrisville

In September in Harrisville, the average temperature is 17°C (63°F). Maximums can reach 24°C (75°F) and minimums can be as low as 9°C (49°F). This pleasant climate makes Harrisville a great destination for outdoor activities and exploring local attractions.

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 17°C (63°F), with highs reaching up to 24°C (75°F) and lows dropping to around 9°C (49°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 81 mm (3.2 in) over a span of 11 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 81 mm (3.2 inches) of precipitation spread over approximately 11 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 79%. With an average temperature of 17°C (63°F), this humidity feels like a warm, muggy embrace, making outdoor activities less comfortable and prompting travelers to seek shaded areas or cool refreshments more frequently.

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 79%, 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	-3°C (26°F)	60 mm (2.4 inches)	92%	low
February Weather	-4°C (26°F)	66 mm (2.6 inches)	91%	moderate
March Weather	-1°C (31°F)	70 mm (2.8 inches)	87%	moderate
April Weather	2°C (36°F)	95 mm (3.7 inches)	85%	very high
May Weather	7°C (44°F)	82 mm (3.2 inches)	79%	very high
June Weather	13°C (56°F)	89 mm (3.5 inches)	75%	very high
July Weather	19°C (66°F)	68 mm (2.7 inches)	75%	very high
August Weather	20°C (68°F)	68 mm (2.7 inches)	75%	very high
September Weather	17°C (63°F)	81 mm (3.2 inches)	79%	high
October Weather	11°C (53°F)	120 mm (4.7 inches)	85%	moderate
November Weather	4°C (39°F)	79 mm (3.1 inches)	88%	moderate
December Weather	0°C (32°F)	73 mm (2.9 inches)	89%	low