September Weather in Russellville, United States

Last updated: June 24, 2025

In September, the average temperature in Russellville, United States is a pleasant 23°C (74°F). However, temperatures can vary significantly, dropping to a cool 8°C (46°F) at night and soaring to a warm 36°C (98°F) during the day. This month also sees an average precipitation of 123 mm (4.8 in), typically spread over about 8 days of rain, with humidity levels averaging around 71%. Enjoy the climate while planning your activities wisely!

September Temperature in Russellville

In September in Russellville, the average temperature is 23°C (74°F). Maximum temperatures can reach 36°C (98°F), while minimums can drop as low as 8°C (46°F). It's advisable to pack both lightweight clothing for the warm days and warmer layers for the cooler evenings.

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

The chart illustrates September temperature patterns in Russellville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Russellville, September typically has an average temperature of 23°C (74°F), with highs reaching up to 36°C (98°F) and lows dropping to around 8°C (46°F).

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

September Precipitation in Russellville

In Russellville in September, the precipitation amount is 123 mm (4.8 in) distributed over 8 days.

September Precipitation Trends in Russellville

The chart displays monthly precipitation patterns in Russellville, 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 Russellville, September typically receives around 123 mm (4.8 inches) of precipitation spread over approximately 8 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 Russellville

In Russellville in September, humidity is 71%. With an average temperature of 23°C (74°F), this humidity feels like a warm, enveloping embrace that can make outdoor activities feel sticky, but if you're well-hydrated and take breaks in the shade, it offers a pleasant tropical ambiance perfect for exploration.

September Average Humidity in Russellville

This chart illustrates the average monthly humidity levels in Russellville, 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 Russellville is approximately 71%, 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 Russellville

In Russellville 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 Russellville.

Maximum UV Index Levels in Russellville for September

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

Data source: Russellville 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 Russellville Compares to Other Months

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

This table compares monthly weather conditions in Russellville, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	4°C (39°F)	95 mm (3.7 inches)	87%	moderate
February Weather	6°C (43°F)	169 mm (6.7 inches)	86%	high
March Weather	11°C (52°F)	144 mm (5.7 inches)	86%	high
April Weather	15°C (58°F)	159 mm (6.3 inches)	82%	very high
May Weather	21°C (70°F)	128 mm (5.0 inches)	82%	very high
June Weather	25°C (77°F)	121 mm (4.8 inches)	83%	extreme
July Weather	27°C (80°F)	108 mm (4.2 inches)	80%	extreme
August Weather	25°C (78°F)	128 mm (5.0 inches)	74%	very high
September Weather	23°C (74°F)	123 mm (4.8 inches)	71%	very high
October Weather	17°C (62°F)	127 mm (5.0 inches)	78%	high
November Weather	8°C (47°F)	86 mm (3.4 inches)	88%	moderate
December Weather	7°C (44°F)	129 mm (5.1 inches)	88%	moderate