September Weather in El Rio, United States

Last updated: June 24, 2025

In September, the average temperature in El Rio, United States hovers around 20°C (69°F), offering a pleasant climate. Expect a minimum of 13°C (55°F) and a maximum of 34°C (93°F), making it ideal for various outdoor activities. Precipitation is minimal, with just 2 mm (0.1 in) over 0 days, while the average humidity rests comfortably at 48%. Enjoy the perfect weather!

September Temperature in El Rio

In September in El Rio, the average temperature is 20°C (69°F). Maximums can reach 34°C (93°F), and minimums can be as low as 13°C (55°F). This climate makes El Rio an ideal destination for travelers who enjoy mild to warm weather.

September Weather in El Rio: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in El Rio, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In El Rio, September typically has an average temperature of 20°C (69°F), with highs reaching up to 34°C (93°F) and lows dropping to around 13°C (55°F).

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

September Precipitation in El Rio

In El Rio in September, the precipitation amount is 2 mm (0.1 in) during a span of 0 days.

September Precipitation Trends in El Rio

The chart displays monthly precipitation patterns in El Rio, 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 El Rio, September typically receives around 2 mm (0.1 inches) of precipitation spread over approximately 0 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 El Rio

In El Rio in September humidity is 48%. With an average temperature of 20°C (69°F), this humidity feels like a pleasant embrace, making it comfortable for exploring the outdoors and enjoying scenic attractions without feeling overly sticky or uncomfortable.

September Average Humidity in El Rio

This chart illustrates the average monthly humidity levels in El Rio, 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 El Rio is approximately 48%, 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 El Rio

In El Rio in September, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in El Rio.

Maximum UV Index Levels in El Rio for September

The chart shows the monthly maximum UV Index (UVI) for El Rio 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 El Rio typically reaches 10, which falls under the very high exposure category.

Data source: El Rio 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 El Rio Compares to Other Months

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

This table compares monthly weather conditions in El Rio, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	13°C (56°F)	84 mm (3.3 inches)	78%	moderate
February Weather	13°C (56°F)	69 mm (2.7 inches)	82%	high
March Weather	14°C (57°F)	78 mm (3.1 inches)	75%	very high
April Weather	16°C (60°F)	20 mm (0.8 inches)	68%	very high
May Weather	16°C (61°F)	14 mm (0.5 inches)	57%	extreme
June Weather	18°C (65°F)	4 mm (0.1 inches)	52%	extreme
July Weather	21°C (69°F)	1 mm (0.1 inches)	46%	extreme
August Weather	21°C (70°F)	2 mm (0.1 inches)	39%	extreme
September Weather	20°C (69°F)	2 mm (0.1 inches)	48%	very high
October Weather	19°C (66°F)	9 mm (0.4 inches)	59%	high
November Weather	16°C (61°F)	20 mm (0.8 inches)	72%	moderate
December Weather	13°C (57°F)	70 mm (2.8 inches)	76%	moderate