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September Weather in Henderson, United States

Last updated: June 24, 2025

In September, the average temperature in Henderson, United States is a comfortable 21°C (70°F). However, you can expect a range, with lows dipping to 4°C (40°F) and highs soaring up to 36°C (97°F). During this month, the region experiences about 62 mm (2.4 in) of precipitation spread over 6 days, and an average humidity of 77% adds to the overall climate experience.

September Temperature in Henderson

In September in Henderson, the average temperature is 21°C (70°F), with maximums reaching 36°C (97°F) and minimums dropping to as low as 4°C (40°F). This diverse range of temperatures makes it a perfect time to pack layers and enjoy various 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 21°C (70°F), with highs reaching up to 36°C (97°F) and lows dropping to around 4°C (40°F).
JanFebMarAprMayJunJulAugSepOctNovDec272641506275787570524132
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 62 mm (2.4 in), spread over the course of 6 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 62 mm (2.4 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec31228850158101627762862341
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 77%. With an average temperature of 21°C (70°F), this humidity feels like a warm, slightly sticky embrace, making travel invigorating yet slightly uncomfortable as you navigate the vibrant streets and outdoor attractions.

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 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec73%81%69%71%80%83%84%84%77%72%80%79%
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 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 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 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3569101110108643
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 Weather-3°C (27°F)31 mm (1.2 inches)73%moderate
February Weather-3°C (27°F)22 mm (0.9 inches)81%moderate
March Weather5°C (42°F)88 mm (3.5 inches)69%high
April Weather10°C (50°F)50 mm (2.0 inches)71%very high
May Weather17°C (62°F)158 mm (6.2 inches)80%very high
June Weather24°C (76°F)101 mm (4.0 inches)83%extreme
July Weather26°C (78°F)62 mm (2.4 inches)84%very high
August Weather24°C (75°F)77 mm (3.0 inches)84%very high
September Weather21°C (70°F)62 mm (2.4 inches)77%very high
October Weather11°C (53°F)86 mm (3.4 inches)72%high
November Weather5°C (41°F)23 mm (0.9 inches)80%moderate
December Weather0°C (32°F)41 mm (1.6 inches)79%moderate

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