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September Weather in Hennessey, United States

Last updated: June 24, 2025

In September, the average temperature in Hennessey, United States hovers around 24°C (76°F). However, be prepared for a range: temperatures can dip to a chilly 7°C (44°F) or soar to a scorching 38°C (100°F). With precipitation around 65 mm (2.6 in) over 5 days, it's wise to pack an umbrella. The average humidity stands at a comfortable 64%, adding to the locale's unique charm.

September Temperature in Hennessey

In September in Hennessey, the average temperature is 24°C (76°F), with maximums reaching up to 38°C (100°F) and minimums dropping as low as 7°C (44°F). It's a great time to visit for those who enjoy warm weather but be prepared for cooler evenings!

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

The chart illustrates September temperature patterns in Hennessey, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hennessey, September typically has an average temperature of 24°C (76°F), with highs reaching up to 38°C (100°F) and lows dropping to around 7°C (44°F).
JanFebMarAprMayJunJulAugSepOctNovDec383953596980838176614943
Data source: Temperature data for Hennessey 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 Hennessey

In Hennessey, in September, the precipitation amount is 65 mm (2.6 in) over a period of 5 days.

September Precipitation Trends in Hennessey

The chart displays monthly precipitation patterns in Hennessey, 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 Hennessey, September typically receives around 65 mm (2.6 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec44328591142102596865852526
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Hennessey

In Hennessey in September, humidity is 64%. With an average temperature of 24°C (76°F), this humidity feels like a warm, sticky embrace, making travel slightly uncomfortable but still enjoyable, as you may find yourself yearning for a refreshing breeze or a quick dip in the water.

September Average Humidity in Hennessey

This chart illustrates the average monthly humidity levels in Hennessey, 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 Hennessey is approximately 64%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%76%70%72%82%82%80%72%64%71%81%84%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Hennessey

In Hennessey 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 Hennessey.

Maximum UV Index Levels in Hennessey for September

The chart shows the monthly maximum UV Index (UVI) for Hennessey 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 Hennessey typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101111111110753
Data source: Hennessey 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 Hennessey Compares to Other Months

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

This table compares monthly weather conditions in Hennessey, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (38°F)44 mm (1.7 inches)76%moderate
February Weather4°C (40°F)32 mm (1.2 inches)76%high
March Weather12°C (53°F)85 mm (3.3 inches)70%very high
April Weather15°C (59°F)91 mm (3.6 inches)72%very high
May Weather21°C (70°F)142 mm (5.6 inches)82%extreme
June Weather26°C (80°F)102 mm (4.0 inches)82%extreme
July Weather28°C (84°F)59 mm (2.3 inches)80%extreme
August Weather27°C (81°F)68 mm (2.7 inches)72%extreme
September Weather24°C (76°F)65 mm (2.6 inches)64%very high
October Weather16°C (61°F)85 mm (3.3 inches)71%high
November Weather10°C (49°F)25 mm (1.0 inches)81%moderate
December Weather6°C (43°F)26 mm (1.0 inches)84%moderate

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