September Weather in Farrell, United States

Last updated: June 24, 2025

In September, the average temperature in Farrell, United States is a comfortable 19°C (66°F). Visitors can expect a range from a cooler 4°C (39°F) to a warm 33°C (92°F). Precipitation during this month totals 106 mm (4.2 in) over approximately 9 days, contributing to an average humidity level of 77%. Enjoy the pleasant climate as you explore!

September Temperature in Farrell

In September in Farrell, the average temperature is 19°C (66°F). Maximums can reach 33°C (92°F), while minimums can drop as low as 4°C (39°F). Be sure to pack a mix of clothing to enjoy both warm days and cooler nights during your travels!

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

The chart illustrates September temperature patterns in Farrell, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Farrell, September typically has an average temperature of 19°C (66°F), with highs reaching up to 33°C (92°F) and lows dropping to around 4°C (39°F).

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

September Precipitation in Farrell

In Farrell in September, the total precipitation amount is 106 mm (4.2 in), spread over the course of 9 days.

September Precipitation Trends in Farrell

The chart displays monthly precipitation patterns in Farrell, 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 Farrell, September typically receives around 106 mm (4.2 inches) of precipitation spread over approximately 9 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 Farrell

In Farrell in September, humidity is 77%. With an average temperature of 19°C (66°F), this humidity feels like a heavy blanket wrapping around you, making the air feel thick and sticky, which can be quite uncomfortable for traveling.

September Average Humidity in Farrell

This chart illustrates the average monthly humidity levels in Farrell, 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 Farrell is approximately 77%, 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 Farrell

In Farrell 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 Farrell.

Maximum UV Index Levels in Farrell for September

The chart shows the monthly maximum UV Index (UVI) for Farrell 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 Farrell typically reaches 8, which falls under the very high exposure category.

Data source: Farrell 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 Farrell Compares to Other Months

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

This table compares monthly weather conditions in Farrell, 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 (29°F)	94 mm (3.7 inches)	88%	moderate
February Weather	0°C (32°F)	100 mm (3.9 inches)	88%	moderate
March Weather	4°C (39°F)	112 mm (4.4 inches)	87%	high
April Weather	9°C (49°F)	137 mm (5.4 inches)	87%	very high
May Weather	16°C (61°F)	133 mm (5.2 inches)	81%	very high
June Weather	20°C (69°F)	129 mm (5.1 inches)	83%	very high
July Weather	23°C (74°F)	132 mm (5.2 inches)	82%	very high
August Weather	22°C (71°F)	98 mm (3.9 inches)	76%	very high
September Weather	19°C (66°F)	106 mm (4.2 inches)	77%	very high
October Weather	13°C (56°F)	120 mm (4.7 inches)	82%	high
November Weather	5°C (41°F)	101 mm (4.0 inches)	89%	moderate
December Weather	1°C (35°F)	99 mm (3.9 inches)	86%	low