September Weather in Potosi, United States

Last updated: June 24, 2025

In Potosi, United States, the average temperature for September hovers around 19°C (66°F). However, be prepared for a temperature range that can dip to a cool 3°C (39°F) or soar to a balmy 33°C (92°F). Expect around 116 mm (4.6 in) of precipitation spread over 10 days, contributing to an average humidity level of 74%. Perfect for those who enjoy a climate that’s both refreshing and vibrant!

September Temperature in Potosi

In September in Potosi, the average temperature is 19°C (66°F). The maximum can reach 33°C (92°F) and the minimum can be as low as 3°C (39°F). It's a great time to visit for those who enjoy mild conditions and the potential for warm sunny days!

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

The chart illustrates September temperature patterns in Potosi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Potosi, September typically has an average temperature of 19°C (66°F), with highs reaching up to 33°C (92°F) and lows dropping to around 3°C (39°F).

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

September Precipitation in Potosi

In Potosi in September, the total precipitation amount is 116 mm (4.6 in) over a span of 10 days.

September Precipitation Trends in Potosi

The chart displays monthly precipitation patterns in Potosi, 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 Potosi, September typically receives around 116 mm (4.6 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 Potosi

In Potosi in September humidity is 74%. With an average temperature of 19°C (66°F), this humidity feels like a warm, enveloping blanket, making it ideal for leisurely outdoor exploration but potentially heavy for those not accustomed to tropical conditions.

September Average Humidity in Potosi

This chart illustrates the average monthly humidity levels in Potosi, 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 Potosi 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 Potosi

In Potosi 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 Potosi.

Maximum UV Index Levels in Potosi for September

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

Data source: Potosi 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 Potosi Compares to Other Months

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

This table compares monthly weather conditions in Potosi, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-6°C (21°F)	46 mm (1.8 inches)	84%	moderate
February Weather	-5°C (23°F)	59 mm (2.3 inches)	85%	moderate
March Weather	3°C (37°F)	61 mm (2.4 inches)	84%	moderate
April Weather	8°C (47°F)	85 mm (3.4 inches)	83%	very high
May Weather	16°C (61°F)	143 mm (5.6 inches)	75%	very high
June Weather	22°C (72°F)	135 mm (5.3 inches)	79%	very high
July Weather	24°C (76°F)	103 mm (4.0 inches)	75%	very high
August Weather	22°C (72°F)	87 mm (3.4 inches)	69%	very high
September Weather	19°C (66°F)	116 mm (4.6 inches)	74%	very high
October Weather	11°C (52°F)	124 mm (4.9 inches)	79%	moderate
November Weather	3°C (37°F)	47 mm (1.8 inches)	88%	moderate
December Weather	-1°C (30°F)	41 mm (1.6 inches)	82%	low