September Weather in Vernon, United States

Last updated: June 24, 2025

In September, the average temperature in Vernon, United States is a warm 26°C (79°F), with a minimum of 13°C (55°F) and a maximum reaching up to 37°C (99°F). Expect around 178 mm (7.0 in) of precipitation spread over 15 days, accompanied by a high average humidity of 79%. Prepare accordingly for a mix of warm weather and occasional rain!

September Temperature in Vernon

In September in Vernon, the average temperature is 26°C (79°F). The maximum can reach 37°C (99°F), while the minimum can be as low as 13°C (55°F). This temperature range makes Vernon an ideal destination for travelers looking to enjoy warm weather while still having comfortable cooler evenings.

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 26°C (79°F), with highs reaching up to 37°C (99°F) and lows dropping to around 13°C (55°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 178 mm (7.0 in) over a span of 15 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 178 mm (7.0 inches) of precipitation spread over approximately 15 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 79%. With an average temperature of 26°C (79°F), this humidity feels like a warm, sticky embrace that can make outdoor activities feel exhausting. Travelers should be prepared for a heavy air that clings to the skin, making hydration essential while navigating the sights and sounds of the city.

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 79%, 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 reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the 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 10, which falls under the very 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	12°C (53°F)	91 mm (3.6 inches)	83%	moderate
February Weather	15°C (60°F)	126 mm (4.9 inches)	82%	very high
March Weather	17°C (63°F)	61 mm (2.4 inches)	79%	very high
April Weather	20°C (68°F)	132 mm (5.2 inches)	77%	very high
May Weather	24°C (75°F)	110 mm (4.3 inches)	74%	extreme
June Weather	27°C (80°F)	199 mm (7.8 inches)	70%	extreme
July Weather	27°C (81°F)	212 mm (8.3 inches)	78%	extreme
August Weather	27°C (81°F)	240 mm (9.4 inches)	78%	extreme
September Weather	26°C (79°F)	178 mm (7.0 inches)	79%	very high
October Weather	23°C (73°F)	97 mm (3.8 inches)	74%	very high
November Weather	16°C (60°F)	43 mm (1.7 inches)	83%	high
December Weather	13°C (56°F)	142 mm (5.6 inches)	86%	moderate