September Weather in Viola, United States

Last updated: June 24, 2025

In September, the average temperature in Viola, United States is a pleasant 18°C (65°F). Visitors can expect a range from a brisk 3°C (38°F) to a warm 33°C (92°F) throughout the month. However, be prepared for some rain, as 120 mm (4.7 in) of precipitation may fall over 10 days. The air tends to be quite humid, with an average humidity level of 74%, making this a time to enjoy both the warmth and the refreshing moisture of the season.

September Temperature in Viola

In September in Viola, the average temperature is 18°C (65°F). Maximum temperatures can reach 33°C (92°F), while minimums can drop as low as 3°C (38°F). This diverse temperature range makes Viola an interesting destination for travelers seeking both warm days and cooler nights.

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

The chart illustrates September temperature patterns in Viola, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Viola, September typically has an average temperature of 18°C (65°F), with highs reaching up to 33°C (92°F) and lows dropping to around 3°C (38°F).

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

September Precipitation in Viola

In Viola in September, the precipitation amount is 120 mm (4.7 in) spread over a duration of 10 days.

September Precipitation Trends in Viola

The chart displays monthly precipitation patterns in Viola, 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 Viola, September typically receives around 120 mm (4.7 inches) of precipitation spread over approximately 10 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Viola

In Viola in September humidity is 74%. With an average temperature of 18°C (65°F), this humidity feels like a warm, sticky embrace that can make even short walks feel laborious, leading travelers to seek shade and refreshment more often.

September Average Humidity in Viola

This chart illustrates the average monthly humidity levels in Viola, 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 Viola is approximately 74%, 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 Viola

In Viola in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Viola.

Maximum UV Index Levels in Viola for September

The chart shows the monthly maximum UV Index (UVI) for Viola 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 Viola typically reaches 8, which falls under the very high exposure category.

Data source: Viola 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 Viola Compares to Other Months

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

This table compares monthly weather conditions in Viola, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-7°C (20°F)	39 mm (1.5 inches)	84%	low
February Weather	-6°C (22°F)	54 mm (2.1 inches)	85%	moderate
March Weather	2°C (36°F)	59 mm (2.3 inches)	84%	moderate
April Weather	7°C (46°F)	87 mm (3.4 inches)	83%	very high
May Weather	15°C (59°F)	135 mm (5.3 inches)	75%	very high
June Weather	21°C (70°F)	125 mm (4.9 inches)	79%	very high
July Weather	23°C (74°F)	103 mm (4.1 inches)	75%	very high
August Weather	21°C (71°F)	101 mm (4.0 inches)	69%	very high
September Weather	18°C (65°F)	120 mm (4.7 inches)	74%	very high
October Weather	10°C (50°F)	120 mm (4.7 inches)	79%	moderate
November Weather	2°C (35°F)	52 mm (2.1 inches)	88%	moderate
December Weather	-2°C (28°F)	44 mm (1.7 inches)	82%	low