Salt Lake City weather in September
September in Salt Lake City: warm, a little rain, with clean air — one of the best months to visit.
#2 of 12 months in Salt Lake City · #35 of 604 destinations to visit in September · comfort 92/100 (tier S)
Updated June 2026 · climate normals from ERA5 reanalysis
Salt Lake City climate normals — September
| Daytime high | 27°C / 81°F | 🌤 warm |
|---|---|---|
| Nighttime low | 13°C / 56°F | |
| Feels like (high) | 26°C / 79°F | |
| Rainfall | 35 mm / 1.4 in | 🌦 some rain |
| Rainy days | 5 days | |
| Humidity | 54% | 🍃 comfortable |
| Dew point | 8°C / 47°F | |
| Sunshine | 11.2 h/day | |
| Daylight | 12.5 h | |
| Wind | 14 km/h / 8 mph | |
| Air quality (US AQI) | 41 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Where is Salt Lake City?
Loading map…
Salt Lake City in September — FAQ
- Is September a good time to visit Salt Lake City?
- September in Salt Lake City: warm, a little rain, with clean air — one of the best months to visit. It ranks #2 of 12 months for Salt Lake City on SeasonMap's comfort score (92/100).
- What is the weather like in Salt Lake City in September?
- In September, Salt Lake City averages a daily high of 27.4°C and a low of 13.3°C, with about 35.3 mm of rain over roughly 4.6 rainy days.
- What is the air quality in Salt Lake City in September?
- Salt Lake City has a mean US Air Quality Index of about 41 in September.