September Weather in Clay, United States

Last updated: June 24, 2025

The average temperature in Clay, United States during September hovers around 24°C (76°F), making it a pleasant time to visit. However, be prepared for a temperature range that can dip to a chilly 11°C (52°F) and soar up to a sizzling 36°C (97°F). With an average precipitation of 91 mm (3.6 in) spread over 9 days, it's wise to pack an umbrella. Additionally, the average humidity is a comfortable 73%, ensuring you stay cool and refreshed!

September Temperature in Clay

In September in Clay, the average temperature is 24°C (76°F). Maximum temperatures can reach 36°C (97°F), while minimums can dip as low as 11°C (52°F). This diverse temperature range makes Clay an ideal destination for travelers seeking both warm days and cooler evenings.

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

The chart illustrates September temperature patterns in Clay, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Clay, September typically has an average temperature of 24°C (76°F), with highs reaching up to 36°C (97°F) and lows dropping to around 11°C (52°F).

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

September Precipitation in Clay

In Clay in September, the precipitation amount is 91 mm (3.6 in) spread over 9 days.

September Precipitation Trends in Clay

The chart displays monthly precipitation patterns in Clay, 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 Clay, September typically receives around 91 mm (3.6 inches) of precipitation spread over approximately 9 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 Clay

In Clay in September humidity is 73%. With an average temperature of 24°C (76°F), this humidity feels like a warm and sticky embrace, making travel slightly uncomfortable as the air thickens around you, prompting you to seek shade and stay hydrated.

September Average Humidity in Clay

This chart illustrates the average monthly humidity levels in Clay, 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 Clay is approximately 73%, 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 Clay

In Clay in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Clay.

Maximum UV Index Levels in Clay for September

The chart shows the monthly maximum UV Index (UVI) for Clay 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 Clay typically reaches 9, which falls under the very high exposure category.

Data source: Clay 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 Clay Compares to Other Months

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

This table compares monthly weather conditions in Clay, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	8°C (46°F)	124 mm (4.9 inches)	85%	moderate
February Weather	11°C (52°F)	180 mm (7.1 inches)	84%	high
March Weather	14°C (58°F)	158 mm (6.2 inches)	82%	very high
April Weather	17°C (63°F)	157 mm (6.2 inches)	82%	very high
May Weather	22°C (72°F)	102 mm (4.0 inches)	81%	extreme
June Weather	25°C (77°F)	138 mm (5.4 inches)	77%	extreme
July Weather	27°C (80°F)	105 mm (4.1 inches)	77%	extreme
August Weather	26°C (80°F)	123 mm (4.8 inches)	72%	very high
September Weather	24°C (76°F)	91 mm (3.6 inches)	73%	very high
October Weather	19°C (67°F)	127 mm (5.0 inches)	73%	high
November Weather	11°C (53°F)	84 mm (3.3 inches)	85%	high
December Weather	9°C (49°F)	151 mm (5.9 inches)	88%	moderate