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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). Expect a range where the mercury may dip to a cool 11°C (52°F) or spike to a scorching 39°C (102°F). With 90 mm (3.6 in) of precipitation spread over 9 days, don’t forget your umbrella! The average humidity for this month is around 63%, adding a touch of tropical charm to the atmosphere.

September Temperature in Henderson

In September in Henderson, the average temperature is 26°C (80°F). Maximum temperatures can reach up to 39°C (102°F), while the minimum can drop as low as 11°C (52°F). Be prepared for a wide range of temperatures to make the most of your travel experience.

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 39°C (102°F) and lows dropping to around 11°C (52°F).
JanFebMarAprMayJunJulAugSepOctNovDec495161657481848479695753
Data source: Temperature data for Henderson generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Henderson

In Henderson in September, the precipitation amount is 90 mm (3.6 in) spread over the course of 9 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 90 mm (3.6 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec10414612614414011282779010359121
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Henderson

In Henderson in September humidity is 63%. With an average temperature of 26°C (80°F), this humidity feels like a warm, enveloping blanket, making outdoor activities enjoyable yet slightly sticky, so travelers should stay hydrated and take breaks in the shade.

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 63%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%80%78%79%81%77%72%65%63%70%82%88%
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.
JanFebMarAprMayJunJulAugSepOctNovDec478101112111110864
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.
 TemperaturePrecipitationHumidityUV
January Weather9°C (49°F)104 mm (4.1 inches)82%moderate
February Weather11°C (52°F)146 mm (5.7 inches)80%high
March Weather16°C (61°F)125 mm (4.9 inches)78%very high
April Weather19°C (66°F)144 mm (5.7 inches)79%very high
May Weather23°C (75°F)140 mm (5.5 inches)81%extreme
June Weather27°C (81°F)112 mm (4.4 inches)77%extreme
July Weather29°C (84°F)82 mm (3.2 inches)72%extreme
August Weather29°C (85°F)77 mm (3.0 inches)65%extreme
September Weather26°C (80°F)90 mm (3.6 inches)63%very high
October Weather20°C (69°F)103 mm (4.0 inches)70%very high
November Weather14°C (58°F)59 mm (2.3 inches)82%high
December Weather12°C (53°F)121 mm (4.8 inches)88%moderate

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