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September Weather in Park City, United States

Last updated: June 24, 2025

In September, the average temperature in Park City, United States hovers around 23°C (74°F). However, be prepared for a range that can dip to a brisk 8°C (46°F) and peak at a sweltering 36°C (97°F). This month, you can expect 124 mm (4.9 in) of precipitation spread over 9 days, with an average humidity level of 64%. 🌦️

September Temperature in Park City

In September in Park City, the average temperature is 23°C (74°F). The maximum can reach 36°C (97°F), while the minimum can dip as low as 8°C (46°F). This makes it a perfect time for travelers to enjoy a variety of outdoor activities, from exploring the sights to relaxing in the pleasant evenings.

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 23°C (74°F), with highs reaching up to 36°C (97°F) and lows dropping to around 8°C (46°F).
JanFebMarAprMayJunJulAugSepOctNovDec424754607076797874644946
Data source: Temperature data for Park City generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Park City

In Park City in September, the precipitation amount is 124 mm (4.9 in) over the course of 9 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 124 mm (4.9 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec11718420715110415415913512411877156
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Park City

In Park City in September, humidity is 64%. With an average temperature of 23°C (74°F), this humidity feels like a warm blanket wrapping around you, making outdoor exploration enjoyable yet slightly sticky, so it's best to stay hydrated and take breaks in the shade while traveling.

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 64%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%87%85%82%83%82%78%67%64%75%87%89%
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 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 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 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46810111111109754
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.
 TemperaturePrecipitationHumidityUV
January Weather6°C (42°F)117 mm (4.6 inches)87%moderate
February Weather9°C (48°F)184 mm (7.3 inches)87%high
March Weather12°C (54°F)207 mm (8.2 inches)85%very high
April Weather15°C (60°F)151 mm (6.0 inches)82%very high
May Weather21°C (70°F)104 mm (4.1 inches)83%extreme
June Weather24°C (76°F)154 mm (6.1 inches)82%extreme
July Weather26°C (79°F)159 mm (6.3 inches)78%extreme
August Weather25°C (78°F)135 mm (5.3 inches)67%very high
September Weather23°C (74°F)124 mm (4.9 inches)64%very high
October Weather18°C (64°F)117 mm (4.6 inches)74%high
November Weather10°C (50°F)77 mm (3.0 inches)87%moderate
December Weather8°C (46°F)156 mm (6.1 inches)88%moderate

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