Monthly climate guide
Park City weather in September
Expect mild weather in Park City in September: afternoons reach about 21°C (69°F), while nights drop to around 6°C (43°F). Around 47 mm of rain falls over the month (fairly dry), and skies are a mix of sun and cloud. Daytime highs are 5°C cooler than August and 8°C warmer than October.
What stands out in September
- Park City is usually about 3°C cooler than Salt Lake City, 40 km away, in September.
- Expect a big gap between day and night — about 15°C.
- Temperatures are falling — expect highs around 8°C lower by October.
- September brings early autumn to Park City.
Avg high
21°C
69°F
Avg low
6°C
43°F
Rainfall
47 mm
fairly dry
Humidity
48%
relative
Sky
36%
cloud · a mix of sun and cloud
Park City weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | -2°C / 29°F | -12°C / 10°F | 55 mm | 85% | 57% |
| February | -1°C / 29°F | -12°C / 11°F | 42 mm | 86% | 61% |
| March | 4°C / 40°F | -6°C / 21°F | 52 mm | 75% | 63% |
| April | 9°C / 47°F | -3°C / 26°F | 62 mm | 67% | 60% |
| May | 15°C / 58°F | 0°C / 33°F | 58 mm | 61% | 57% |
| June | 22°C / 72°F | 6°C / 43°F | 18 mm | 47% | 33% |
| July | 27°C / 80°F | 11°C / 52°F | 26 mm | 46% | 40% |
| August | 26°C / 79°F | 11°C / 51°F | 29 mm | 43% | 38% |
| September | 21°C / 69°F | 6°C / 43°F | 47 mm | 48% | 36% |
| October | 12°C / 54°F | -1°C / 31°F | 32 mm | 56% | 40% |
| November | 5°C / 41°F | -6°C / 22°F | 38 mm | 67% | 52% |
| December | -2°C / 29°F | -12°C / 11°F | 50 mm | 82% | 59% |
What to pack for September
- T-shirts plus a light layer for the evening
- Comfortable trainers or sandals for long walks
- An extra layer — evenings are noticeably cooler than afternoons
- A small travel umbrella, just in case
- Sunglasses
Is September a good time to visit Park City?
Compare the months in the chart above to find your ideal window.
Best time to visit Park City →Other United States cities in September
Cite or embed this data
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Park City weather in September. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/usa/park-city/september
<a href="https://weathercompare.eu/weather/usa/park-city/september">Park City weather in September</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/usa/park-city" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Park City weather in September"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/usa/park-city/september">Park City weather in September</a> – WeatherCompare</p>
Park City in September: quick answers
Is September a good time to visit Park City?
September is a reasonable time for Park City: highs around 21°C and about 47 mm of rain, though not one of the three best months.
How warm is Park City in September?
Average highs are about 21°C (69°F) and average lows about 6°C (43°F), based on 10 years of daily data.
Does it rain a lot in Park City in September?
Park City typically gets around 47 mm of rain in September — fairly dry.
Figures are long-term averages for the area around Park City (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.