September Weather in Mason, United States

Last updated: June 24, 2025

In September, the average temperature in Mason, United States is a pleasant 24°C (76°F). Expect fluctuations, with minimums dipping to 10°C (50°F) and maximums soaring to 35°C (96°F). Be prepared for 102 mm (4.0 in) of precipitation spread across 7 days, and a comfortable average humidity of 70%. 🌦️

September Temperature in Mason

In September in Mason, the average temperature is 24°C (76°F). The maximum can reach 35°C (96°F) and the minimum can be as low as 10°C (50°F). This makes it a perfect time for travelers to enjoy a variety of outdoor activities while experiencing mild and warm weather.

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

The chart illustrates September temperature patterns in Mason, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mason, September typically has an average temperature of 24°C (76°F), with highs reaching up to 35°C (96°F) and lows dropping to around 10°C (50°F).

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

September Precipitation in Mason

In Mason in September, the total precipitation amount is 102 mm (4.0 in) over a period of 7 days.

September Precipitation Trends in Mason

The chart displays monthly precipitation patterns in Mason, 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 Mason, September typically receives around 102 mm (4.0 inches) of precipitation spread over approximately 7 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 Mason

In Mason in September, humidity is 70%. With an average temperature of 24°C (76°F), this humidity feels like a warm, enveloping blanket that can make outdoor activities feel a bit sticky and heavier, so travelers should stay hydrated and take regular breaks to enjoy the sights comfortably.

September Average Humidity in Mason

This chart illustrates the average monthly humidity levels in Mason, 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 Mason is approximately 70%, 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 Mason

In Mason 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 Mason.

Maximum UV Index Levels in Mason for September

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

Data source: Mason 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 Mason Compares to Other Months

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

This table compares monthly weather conditions in Mason, 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)	102 mm (4.0 inches)	86%	moderate
February Weather	7°C (45°F)	172 mm (6.8 inches)	85%	high
March Weather	12°C (55°F)	169 mm (6.6 inches)	84%	high
April Weather	16°C (61°F)	139 mm (5.5 inches)	81%	very high
May Weather	22°C (72°F)	108 mm (4.2 inches)	83%	very high
June Weather	26°C (78°F)	106 mm (4.2 inches)	83%	extreme
July Weather	27°C (82°F)	120 mm (4.7 inches)	80%	extreme
August Weather	26°C (79°F)	113 mm (4.5 inches)	73%	very high
September Weather	24°C (76°F)	102 mm (4.0 inches)	70%	very high
October Weather	18°C (64°F)	114 mm (4.5 inches)	73%	high
November Weather	10°C (50°F)	80 mm (3.1 inches)	85%	moderate
December Weather	8°C (46°F)	145 mm (5.7 inches)	88%	moderate