September Weather in Royalton, United States

Last updated: June 24, 2025

In Royalton, United States, the average temperature in September hovers around 17°C (62°F). Expect a range that can dip to a chilly 0°C (32°F) or soar to a warm 31°C (89°F). During this month, precipitation amounts to 115 mm (4.5 in) over approximately 9 days, while the air carries an average humidity level of 81%.

September Temperature in Royalton

In September in Royalton, the average temperature is 17°C (62°F). Maximums can reach 31°C (89°F) and minimums can be as low as 0°C (32°F). This makes it a versatile time for traveling, allowing for both warm days and cooler nights, so be sure to pack accordingly!

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

The chart illustrates September temperature patterns in Royalton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Royalton, September typically has an average temperature of 17°C (62°F), with highs reaching up to 31°C (89°F) and lows dropping to around 0°C (32°F).

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

September Precipitation in Royalton

In Royalton in September, the precipitation amount is 115 mm (4.5 in) over the course of 9 days, indicating a relatively wet period for the region.

September Precipitation Trends in Royalton

The chart displays monthly precipitation patterns in Royalton, 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 Royalton, September typically receives around 115 mm (4.5 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 Royalton

In Royalton in September, humidity is 81%. With an average temperature of 17°C (62°F), this humidity feels like a warm blanket enveloping you, making outdoor adventures feel sticky and requiring frequent breaks to stay comfortable while exploring.

September Average Humidity in Royalton

This chart illustrates the average monthly humidity levels in Royalton, 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 Royalton is approximately 81%, 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 Royalton

In Royalton in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Royalton.

Maximum UV Index Levels in Royalton for September

The chart shows the monthly maximum UV Index (UVI) for Royalton 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 Royalton typically reaches 7, which falls under the high exposure category.

Data source: Royalton 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 Royalton Compares to Other Months

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

This table compares monthly weather conditions in Royalton, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-10°C (14°F)	19 mm (0.7 inches)	87%	low
February Weather	-10°C (14°F)	23 mm (0.9 inches)	90%	moderate
March Weather	-1°C (31°F)	46 mm (1.8 inches)	85%	moderate
April Weather	5°C (41°F)	78 mm (3.1 inches)	84%	high
May Weather	14°C (57°F)	86 mm (3.4 inches)	78%	very high
June Weather	21°C (70°F)	72 mm (2.8 inches)	80%	very high
July Weather	23°C (73°F)	105 mm (4.1 inches)	81%	very high
August Weather	21°C (69°F)	139 mm (5.5 inches)	81%	very high
September Weather	17°C (62°F)	115 mm (4.5 inches)	81%	high
October Weather	8°C (46°F)	104 mm (4.1 inches)	84%	moderate
November Weather	-1°C (31°F)	30 mm (1.2 inches)	88%	moderate
December Weather	-6°C (21°F)	46 mm (1.8 inches)	84%	low