nomadseason

September Weather in Clayton, United States

Last updated: June 24, 2025

In Clayton, United States, the average temperature in September hovers around 24°C (76°F), providing a warm and inviting atmosphere. Expect a minimum of 9°C (48°F) and highs reaching up to 37°C (100°F). While enjoying the balmy weather, be prepared for an average precipitation of 74 mm (2.9 in) over 7 days, accompanied by a comfortable average humidity of 64%.

September Temperature in Clayton

In September in Clayton, the average temperature is 24°C (76°F). Maximum temperatures can reach 37°C (100°F), while minimum temperatures can drop as low as 9°C (48°F). Be prepared for a wide range of weather conditions to make the most of your travel experience.

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

The chart illustrates September temperature patterns in Clayton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Clayton, September typically has an average temperature of 24°C (76°F), with highs reaching up to 37°C (100°F) and lows dropping to around 9°C (48°F).
JanFebMarAprMayJunJulAugSepOctNovDec424456617078818076635247
Data source: Temperature data for Clayton generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Clayton

In Clayton in September, the precipitation amount is 74 mm (2.9 in) over a period of 7 days.

September Precipitation Trends in Clayton

The chart displays monthly precipitation patterns in Clayton, 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 Clayton, September typically receives around 74 mm (2.9 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec8312713314919791781037415967100
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Clayton

In Clayton 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 Clayton

This chart illustrates the average monthly humidity levels in Clayton, 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 Clayton is approximately 64%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec79%78%75%75%83%82%78%68%64%71%82%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Clayton

In Clayton 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 Clayton.

Maximum UV Index Levels in Clayton for September

The chart shows the monthly maximum UV Index (UVI) for Clayton 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 Clayton typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec468101111111010854
Data source: Clayton 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 Clayton Compares to Other Months

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

This table compares monthly weather conditions in Clayton, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (42°F)83 mm (3.3 inches)79%moderate
February Weather7°C (45°F)127 mm (5.0 inches)78%high
March Weather13°C (56°F)133 mm (5.2 inches)75%very high
April Weather16°C (61°F)149 mm (5.9 inches)75%very high
May Weather21°C (70°F)197 mm (7.8 inches)83%extreme
June Weather26°C (78°F)91 mm (3.6 inches)81%extreme
July Weather27°C (82°F)78 mm (3.1 inches)78%extreme
August Weather27°C (81°F)103 mm (4.1 inches)68%very high
September Weather24°C (76°F)74 mm (2.9 inches)64%very high
October Weather17°C (64°F)159 mm (6.2 inches)71%very high
November Weather11°C (52°F)67 mm (2.6 inches)82%moderate
December Weather8°C (47°F)100 mm (4.0 inches)87%moderate

Compare Clayton's Climate with Cities Worldwide