September Weather in Henderson, United States

Last updated: June 24, 2025

In September, the average temperature in Henderson, United States hovers around 26°C (80°F). Be prepared for temperatures that can dip as low as 13°C (56°F) and soar to a maximum of 36°C (96°F). Expect 132 mm (5.2 in) of precipitation spread across 14 days, contributing to an average humidity of 79%. Stay cool and enjoy!

September Temperature in Henderson

In September in Henderson, the average temperature is 26°C (80°F), with maximums reaching 36°C (96°F) and minimums dropping to 13°C (56°F). This makes it an ideal time for travelers seeking warm weather and a variety of outdoor activities.

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

The chart illustrates September temperature patterns in Henderson, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Henderson, September typically has an average temperature of 26°C (80°F), with highs reaching up to 36°C (96°F) and lows dropping to around 13°C (56°F).

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

September Precipitation in Henderson

In Henderson in September, the precipitation amount is 132 mm (5.2 in) over a span of 14 days.

September Precipitation Trends in Henderson

The chart displays monthly precipitation patterns in Henderson, 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 Henderson, September typically receives around 132 mm (5.2 inches) of precipitation spread over approximately 14 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 Henderson

In Henderson in September, humidity is 79%. With an average temperature of 26°C (80°F), this humidity feels like an enveloping warm blanket, making travel feel slightly sluggish and prompting frequent hydration breaks to stay comfortable while exploring the sights.

September Average Humidity in Henderson

This chart illustrates the average monthly humidity levels in Henderson, 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 Henderson 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 Henderson

In Henderson 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 Henderson.

Maximum UV Index Levels in Henderson for September

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

Data source: Henderson 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 Henderson Compares to Other Months

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

This table compares monthly weather conditions in Henderson, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	12°C (54°F)	101 mm (4.0 inches)	83%	moderate
February Weather	15°C (59°F)	106 mm (4.2 inches)	83%	very high
March Weather	18°C (65°F)	74 mm (2.9 inches)	80%	very high
April Weather	20°C (69°F)	136 mm (5.3 inches)	81%	extreme
May Weather	25°C (77°F)	147 mm (5.8 inches)	81%	extreme
June Weather	27°C (81°F)	165 mm (6.5 inches)	78%	extreme
July Weather	28°C (83°F)	193 mm (7.6 inches)	79%	extreme
August Weather	28°C (82°F)	164 mm (6.5 inches)	79%	extreme
September Weather	26°C (80°F)	132 mm (5.2 inches)	79%	very high
October Weather	23°C (73°F)	106 mm (4.2 inches)	77%	very high
November Weather	16°C (61°F)	80 mm (3.2 inches)	85%	high
December Weather	14°C (57°F)	108 mm (4.2 inches)	88%	moderate