September Weather in Vernon, France

Last updated: August 23, 2025

The average temperature in Vernon, France during September is a pleasant 18°C (64°F). This month can see temperatures ranging from a cool minimum of 5°C (41°F) to a warm maximum of 35°C (95°F). Expect some moisture in the air, with precipitation amounting to 38 mm (1.5 in) over about 7 days. The average humidity level is around 76%, making for a truly refreshing atmosphere.

September Temperature in Vernon

In September in Vernon, the average temperature is 18°C (64°F). The maximum can reach 35°C (95°F), and the minimum can be as low as 5°C (41°F). This range of temperatures makes it a perfect time for travelers to enjoy outdoor activities while being prepared for varying weather conditions.

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

The chart illustrates September temperature patterns in Vernon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Vernon, September typically has an average temperature of 18°C (64°F), with highs reaching up to 35°C (95°F) and lows dropping to around 5°C (41°F).

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

September Precipitation in Vernon

In Vernon in September, the precipitation amount is 38 mm (1.5 in) over the course of 7 days.

September Precipitation Trends in Vernon

The chart displays monthly precipitation patterns in Vernon, 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 Vernon, September typically receives around 38 mm (1.5 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 Vernon

In Vernon in September, humidity is 76%. With an average temperature of 18°C (64°F), this humidity feels like a warm blanket wrapping around you, making outdoor activities feel steamy and invigorating—perfect for exploring charming streets, though you might want to take breaks in the shade.

September Average Humidity in Vernon

This chart illustrates the average monthly humidity levels in Vernon, 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 Vernon is approximately 76%, 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 Vernon

In Vernon in September, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Vernon, you can refer to this Hourly UV Index in Vernon.

Maximum UV Index Levels in Vernon for September

The chart shows the monthly maximum UV Index (UVI) for Vernon 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 Vernon typically reaches 6, which falls under the high exposure category.

Data source: Vernon 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 Vernon Compares to Other Months

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

This table compares monthly weather conditions in Vernon, 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 (41°F)	54 mm (2.1 inches)	90%	low
February Weather	7°C (45°F)	63 mm (2.5 inches)	88%	moderate
March Weather	9°C (49°F)	74 mm (2.9 inches)	85%	moderate
April Weather	12°C (54°F)	54 mm (2.1 inches)	83%	high
May Weather	15°C (60°F)	82 mm (3.2 inches)	83%	very high
June Weather	19°C (67°F)	78 mm (3.1 inches)	79%	very high
July Weather	21°C (71°F)	36 mm (1.4 inches)	71%	very high
August Weather	21°C (70°F)	26 mm (1.0 inches)	68%	very high
September Weather	18°C (64°F)	38 mm (1.5 inches)	76%	high
October Weather	13°C (56°F)	81 mm (3.2 inches)	87%	moderate
November Weather	8°C (47°F)	74 mm (2.9 inches)	91%	moderate
December Weather	7°C (44°F)	95 mm (3.8 inches)	93%	low