September weather forecast
Park City, UT

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A beautiful sunny winter morning in Park City, Utah
A beautiful sunny winter morning in Park City, Utah

Weather in September

September brings a significant transition to autumn. Temperature ranges between 43.3°F (6.3°C) and 70.5°F (21.4°C), dialing down the summer heat. The changing colors of the foliage provide a picturesque backdrop to the city. The decrease in humidity prompts comfortable conditions for exploring the cityscape.

Temperature

During the shift to September in Park City, a minor reduction in average high-temperature is observed, shifting from a warm 79.3°F (26.3°C) in August to an agreeable 70.5°F (21.4°C). September nights indicate a noticeable temperature drop from the daytime highs, with an average reading lowering to a chilly 43.3°F (6.3°C).

Humidity

The average relative humidity in September in Park City is 48%.

Rainfall

The month with the least rainfall in Park City is September, when the rain falls for 5.5 days and typically collects 0.28" (7mm) of precipitation.

Snowfall

January through June, September through December are months with snowfall in Park City. September is the first month it typically snows. Throughout September, in the average 0.8 snowfall days, it receives 0.28" (7mm) of snow. In Park City, during the entire year, snow falls for 83.1 days and aggregates up to 35.71" (907mm) of snow.

Daylight

In Park City, the average length of the day in September is 12h and 27min.
On the first day of the month, sunrise is at 6:53 am and sunset at 7:57 pm. On the last day of September, sunrise is at 7:22 am and sunset at 7:09 pm MDT.

Sunshine

In Park City, the average sunshine in September is 10.1h.

UV index

In Park City, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: The UV index of 4 during September leads to these advisories:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
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Frequently asked questions

What is the usual temperature for Park City in September?

September temperatures in Park City vary between a high-temperature of 70.5°F (21.4°C) and a low-temperature of 43.3°F (6.3°C). In July, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which calculates the temperature value influenced by the moisture in the air, is appraised at 80.6°F (27°C).

What is the average humidity in September in Park City?

The average relative humidity in September is 48%.

What is the driest month in Park City?

The month with the least rainfall in Park City is September, when the rain falls for 5.5 days and typically collects 0.28" (7mm) of precipitation.

How many days does it rain in September in Park City?

In Park City, Utah, during September, the rain falls for 5.5 days and regularly aggregates up to 0.28" (7mm) of precipitation.

When does it start to snow in Park City?

September is the first month it typically snows in Park City. Throughout September, in the average 0.8 snowfall days, it receives 0.28" (7mm) of snow.

What is the average length of the day in September in Park City?

In Park City, Utah, the average day length in September is 12h and 27min.

When are sunrise and sunset in September in Park City?

On the first day of September in Park City, sunrise is at 6:53 am and sunset at 7:57 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 7:09 pm MDT.

How long on average sun shines in September in Park City?

In September, the average sunshine duration in Park City is 10.1h.

What is the UV index reading in September in Park City?

In September, the average daily maximum UV index in Park City, Utah, is 4. A UV Index estimate of 3 to 5 represents a medium health risk from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Park City, UT

Average temperature in September - Park City, UT
  • Average high temperature in September: 70.5°F

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is December (28.6°F).

  • Average low temperature in September: 43.3°F

The month with the highest average low temperature is July (51.4°F).
The coldest month (with the lowest average low temperature) is January (10.8°F).

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Average pressure in September
Park City, UT

Average pressure in September - Park City, UT
  • Average pressure in September: 29.95"Hg

The month with the highest atmospheric pressure is January (30.27"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

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Average wind speed in September
Park City, UT

Average wind speed in September - Park City, UT
  • Average wind speed in September: 5.5mph

The windiest months (with the highest average wind speed) are April and June (5.8mph).
The calmest month (with the lowest average wind speed) is January (4.7mph).

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Average humidity in September
Park City, UT

Average humidity in September - Park City, UT
  • Average humidity in September: 48%

The month with the highest relative humidity is January (88%).
The months with the lowest relative humidity are July and August (43%).

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Average rainfall in September
Park City, UT

Average rainfall in September - Park City, UT
  • Average rainfall in September: 0.28"

The wettest months (with the highest rainfall) are February and May (0.83").
The driest month (with the least rainfall) is September (0.28").

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Average rainfall days in September
Park City, UT

Average rainfall days in September - Park City, UT
  • Average rainfall days in September: 5.5 days

The month with the highest number of rainy days is May (9.8 days).
The month with the least rainy days is November (4.4 days).

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Average snowfall in September
Park City, UT

Average snowfall in September - Park City, UT
  • Average snowfall in September: 0.28"

The month with the highest snowfall is February (6.81").
The months with the least snowfall are July and August (0").

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Average snowfall days in September
Park City, UT

Average snowfall days in September - Park City, UT
  • Average snowfall days in September: 0.8 days

The month with the highest number of snowfall days is February (16.2 days).
The months with the least snowfall days are July and August (0 days).

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Average daylight in September /
Average sunshine in September
Park City, UT

Average daylight in September / Average sunshine in September - Park City, UT
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

  • Average sunshine in September: 10h and 1min

The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).

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Average sunshine days in September
Park City, UT

Average sunshine days in September - Park City, UT
  • Average sunshine days in September: 20.1 days

The month with the most sunshine days is June (22.5 days).
The month with the least sunshine days is February (12.6 days).

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Average UV index in September
Park City, UT

Average UV index in September - Park City, UT
  • Average UV index in September: 4

The months with the highest UV index are June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in September
Park City, UT

Average cloud cover in September - Park City, UT
  • Average cloud cover in September: 13

The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 11).

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Average visibility in September
Park City, UT

Average visibility in September - Park City, UT
  • Average visibility in September: 6mi

The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (4mi).

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Park City, Utah, USA

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