September Weather in Graysville, United States

Last updated: June 24, 2025

In September, the average temperature in Graysville, United States is a pleasant 23°C (74°F), making it an ideal time to explore the area. However, temperatures can vary, with a minimum of 9°C (49°F) and a maximum reaching up to 36°C (97°F). Expect around 105 mm (4.1 in) of precipitation spread over 10 days, contributing to an average humidity of 64%. Prepare accordingly to enjoy your stay!

September Temperature in Graysville

In September in Graysville, the average temperature is 23°C (74°F). Maximums can reach 36°C (97°F) and minimums can be as low as 9°C (49°F). This weather makes Graysville an ideal destination for travelers seeking warm daytime activities and cooler evenings for outdoor adventures.

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

The chart illustrates September temperature patterns in Graysville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Graysville, September typically has an average temperature of 23°C (74°F), with highs reaching up to 36°C (97°F) and lows dropping to around 9°C (49°F).

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

September Precipitation in Graysville

In Graysville in September, the precipitation amount is 105 mm (4.1 in) over the course of 10 days.

September Precipitation Trends in Graysville

The chart displays monthly precipitation patterns in Graysville, 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 Graysville, September typically receives around 105 mm (4.1 inches) of precipitation spread over approximately 10 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 Graysville

In Graysville in September, humidity is 64%. With an average temperature of 23°C (74°F), this humidity feels like a warm blanket wrapping around you, making outdoor exploration enjoyable yet slightly sticky, so it's best to stay hydrated and take breaks in the shade while traveling.

September Average Humidity in Graysville

This chart illustrates the average monthly humidity levels in Graysville, 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 Graysville is approximately 64%, 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 Graysville

In Graysville 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 Graysville.

Maximum UV Index Levels in Graysville for September

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

Data source: Graysville 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 Graysville Compares to Other Months

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

This table compares monthly weather conditions in Graysville, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	5°C (42°F)	103 mm (4.0 inches)	87%	moderate
February Weather	8°C (47°F)	173 mm (6.8 inches)	87%	high
March Weather	11°C (53°F)	173 mm (6.8 inches)	85%	very high
April Weather	15°C (59°F)	166 mm (6.5 inches)	82%	very high
May Weather	21°C (69°F)	133 mm (5.2 inches)	83%	extreme
June Weather	24°C (75°F)	119 mm (4.7 inches)	82%	extreme
July Weather	26°C (79°F)	137 mm (5.4 inches)	78%	extreme
August Weather	25°C (77°F)	137 mm (5.4 inches)	67%	very high
September Weather	23°C (74°F)	105 mm (4.1 inches)	64%	very high
October Weather	17°C (64°F)	129 mm (5.1 inches)	74%	high
November Weather	9°C (49°F)	74 mm (2.9 inches)	87%	moderate
December Weather	7°C (45°F)	140 mm (5.5 inches)	88%	moderate