September Weather in Park City, United States

Last updated: June 24, 2025

In September, the average temperature in Park City, United States hovers around 16°C (61°F). However, be prepared for extremes—a chilling minimum of 0°C (33°F) and the occasional sweltering maximum of 37°C (99°F). Expect approximately 46 mm (1.8 in) of precipitation spread across 6 days, contributing to an average humidity level of 76%. Stay comfortable and plan accordingly!

September Temperature in Park City

In September in Park City, the average temperature is 16°C (61°F). Maximum temperatures can reach 37°C (99°F), while minimums can drop as low as 0°C (33°F). Be prepared for a wide range of temperatures when traveling to Park City this month.

September Weather in Park City: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Park City, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Park City, September typically has an average temperature of 16°C (61°F), with highs reaching up to 37°C (99°F) and lows dropping to around 0°C (33°F).

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

September Precipitation in Park City

In Park City in September, the precipitation amount is 46 mm (1.8 in) over a span of 6 days.

September Precipitation Trends in Park City

The chart displays monthly precipitation patterns in Park City, 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 Park City, September typically receives around 46 mm (1.8 inches) of precipitation spread over approximately 6 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 Park City

In Park City in September humidity is 76%. With an average temperature of 16°C (61°F), this humidity feels like a warm embrace that makes traveling feel slightly heavy yet refreshing, often prompting you to seek shade or indulge in ice-cold drinks to stay comfortable.

September Average Humidity in Park City

This chart illustrates the average monthly humidity levels in Park City, 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 Park City is approximately 76%, 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 Park City

In Park City 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 Park City.

Maximum UV Index Levels in Park City for September

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

Data source: Park City 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 Park City Compares to Other Months

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

This table compares monthly weather conditions in Park City, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (25°F)	19 mm (0.7 inches)	85%	moderate
February Weather	-7°C (19°F)	49 mm (1.9 inches)	85%	moderate
March Weather	2°C (35°F)	36 mm (1.4 inches)	79%	high
April Weather	6°C (42°F)	68 mm (2.7 inches)	74%	very high
May Weather	12°C (54°F)	73 mm (2.9 inches)	76%	very high
June Weather	18°C (65°F)	63 mm (2.5 inches)	79%	extreme
July Weather	23°C (73°F)	22 mm (0.9 inches)	81%	very high
August Weather	21°C (71°F)	21 mm (0.8 inches)	80%	very high
September Weather	16°C (61°F)	46 mm (1.8 inches)	76%	very high
October Weather	7°C (44°F)	47 mm (1.9 inches)	74%	moderate
November Weather	1°C (35°F)	32 mm (1.3 inches)	81%	moderate
December Weather	-2°C (28°F)	29 mm (1.1 inches)	87%	low