September Weather in Tranquillity, United States

Last updated: June 24, 2025

In Tranquillity, United States, the average temperature in September is a warm 26°C (79°F), with temperatures ranging from a cool 11°C (52°F) to a scorching 43°C (110°F). Expect 0 mm (0.0 in) of precipitation over the month, meaning you'll enjoy clear skies throughout September. The average humidity stands at a comfortable 55%, making it an ideal time to explore and enjoy the great outdoors!

September Temperature in Tranquillity

In September in Tranquillity, the average temperature is 26°C (79°F). Maximums can reach 43°C (110°F) and minimums can be as low as 11°C (52°F). Travelers should be prepared for a wide range of temperatures, ensuring they pack both warm and cool clothing options.

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

The chart illustrates September temperature patterns in Tranquillity, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tranquillity, September typically has an average temperature of 26°C (79°F), with highs reaching up to 43°C (110°F) and lows dropping to around 11°C (52°F).

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

September Precipitation in Tranquillity

In Tranquillity in September, the precipitation amount is 0 mm (0.0 in) during 0 days.

September Precipitation Trends in Tranquillity

The chart displays monthly precipitation patterns in Tranquillity, 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 Tranquillity, September typically receives around 0 mm (0.0 inches) of precipitation spread over approximately 0 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 Tranquillity

In Tranquillity in September humidity is 55%. With an average temperature of 26°C (79°F), this humidity feels like a warm embrace, making it pleasant for leisurely strolls and outdoor exploration, though occasional breaks in shaded areas might be needed to stay comfortable.

September Average Humidity in Tranquillity

This chart illustrates the average monthly humidity levels in Tranquillity, 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 Tranquillity is approximately 55%, 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 Tranquillity

In Tranquillity 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 Tranquillity.

Maximum UV Index Levels in Tranquillity for September

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

Data source: Tranquillity 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 Tranquillity Compares to Other Months

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

This table compares monthly weather conditions in Tranquillity, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	11°C (51°F)	69 mm (2.7 inches)	82%	moderate
February Weather	12°C (54°F)	49 mm (1.9 inches)	84%	moderate
March Weather	15°C (59°F)	66 mm (2.6 inches)	82%	very high
April Weather	19°C (66°F)	24 mm (1.0 inches)	78%	very high
May Weather	23°C (73°F)	18 mm (0.7 inches)	71%	very high
June Weather	28°C (82°F)	1 mm (0.0 inches)	64%	extreme
July Weather	31°C (87°F)	0 mm (0.0 inches)	58%	extreme
August Weather	30°C (86°F)	0 mm (0.0 inches)	54%	very high
September Weather	26°C (79°F)	0 mm (0.0 inches)	55%	very high
October Weather	20°C (68°F)	10 mm (0.4 inches)	62%	high
November Weather	14°C (58°F)	25 mm (1.0 inches)	78%	moderate
December Weather	10°C (51°F)	53 mm (2.1 inches)	80%	moderate