September Weather in Isola, United States

Last updated: June 24, 2025

In September, the average temperature in Isola, United States reaches a pleasant 26°C (79°F). Expect lows of 13°C (56°F) and highs soaring up to 36°C (98°F). During this period, the region experiences an average precipitation of 98 mm (3.9 in) over the course of 7 days, with humidity levels hovering around 73%. Ideal for those seeking warmth with a splash of refreshing rain!

September Temperature in Isola

In September in Isola, the average temperature is 26°C (79°F), with maximums reaching up to 36°C (98°F) and minimums dipping as low as 13°C (56°F). It's essential to pack both light clothing for the heat and warmer layers for the cooler evenings while traveling.

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

The chart illustrates September temperature patterns in Isola, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Isola, September typically has an average temperature of 26°C (79°F), with highs reaching up to 36°C (98°F) and lows dropping to around 13°C (56°F).

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

September Precipitation in Isola

In Isola in September, the precipitation amount is 98 mm (3.9 in) over a span of 7 days.

September Precipitation Trends in Isola

The chart displays monthly precipitation patterns in Isola, 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 Isola, September typically receives around 98 mm (3.9 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 Isola

In Isola in September, humidity is 73%. With an average temperature of 26°C (79°F), this humidity feels like a warm, sticky embrace, making travel slightly uncomfortable as you navigate through the heat with a constant sheen of sweat on your skin.

September Average Humidity in Isola

This chart illustrates the average monthly humidity levels in Isola, 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 Isola is approximately 73%, 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 Isola

In Isola 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 Isola.

Maximum UV Index Levels in Isola for September

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

Data source: Isola 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 Isola Compares to Other Months

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

This table compares monthly weather conditions in Isola, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	8°C (47°F)	121 mm (4.8 inches)	84%	moderate
February Weather	11°C (51°F)	189 mm (7.4 inches)	83%	high
March Weather	15°C (60°F)	162 mm (6.4 inches)	80%	very high
April Weather	18°C (65°F)	161 mm (6.4 inches)	82%	extreme
May Weather	23°C (74°F)	114 mm (4.5 inches)	83%	extreme
June Weather	26°C (80°F)	104 mm (4.1 inches)	80%	extreme
July Weather	28°C (83°F)	96 mm (3.8 inches)	80%	extreme
August Weather	28°C (82°F)	111 mm (4.4 inches)	75%	extreme
September Weather	26°C (79°F)	98 mm (3.9 inches)	73%	very high
October Weather	20°C (68°F)	120 mm (4.7 inches)	76%	very high
November Weather	12°C (54°F)	92 mm (3.6 inches)	84%	high
December Weather	11°C (52°F)	123 mm (4.9 inches)	88%	moderate