Salt Lake City, Utah weather in September

Averages from 2021–2025 (150 days of record).

Average high: 82°F
Average low: 57°F
Rainy days: ~3 per month
Total precipitation: 0.8 in
Warmest recorded: 103°F
Coldest recorded: 41°F

Expect September days in Salt Lake City, Utah to top out around 82°F and cool to about 57°F overnight, with roughly 3 days of measurable rain across the month. In recent years September has ranged from 41°F to 103°F.

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Current Salt Lake City, Utah forecast → · Historical data by Open-Meteo (ERA5).