Weather in Salt Lake City in September 2025
Average weather
Average temperature in Salt Lake City in September
Going from a maximum of +34°C during the day to a minimum of +5°C during the night, the temperature in September averages around +28°C.
The average maximum temperature goes down 28% by the end of the month, compared with the beginning of the month, from +34°C to +26°C.
Is Salt Lake City warm or cold in September?
Salt Lake City is typically warm in September.
Maximum temperatures go down compared to the previous month from +32°C to +26°C. The minimum temperature also goes down from +17°C to +12°C.
It’s generally warm, but pack a long-sleeve shirt for evenings.
Take a look at how September is compared to other months in Salt Lake City:
Climate in Salt Lake City in September
| August | September | October | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +32°C | +26°C | +18°C | ||||
| Min. temperature | ||||||
| +7°C | 0°C | -11°C | ||||
| Max. temperature | ||||||
| +39°C | +39°C | +31°C | ||||
| Rainfall | ||||||
| 20 mm | 42 mm | 55 mm | ||||
| Wind | ||||||
| 2 m/s | 2 m/s | 2 m/s | ||||
| Humidity | ||||||
| 43% | 50% | 60% | ||||
| Air pressure | ||||||
| 1011 HPa | 1013 HPa | 1015 HPa | ||||
| Sunny days | ||||||
| 11 | 13 | 10 | ||||
| Cloudy days | ||||||
| 9 | 7 | 10 | ||||
| Rainy days | ||||||
| 10 | 9 | 9 | ||||
| Snowy days | ||||||
| 0 | 0 | 1 | ||||
September weather is still as good as in August. It’s getting colder in September. From +32°C in the day, the average maximum temperature lowers to +26°C. Prepare for more rain. Average rainfall goes from 20 mm to 42 mm. Humidity rises from 43% to 50%. The average wind speed doesn’t change much during September, staying around 2 m/s. The good news is there are likely to be more sunny days in September, from 11 to 13.
October brings much the same weather, it remains good.
Wind
The average wind speed is 3 m/s getting up to 5 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Salt Lake City is gradually decreasing during September, going from 5 m/s to 4 m/s over the course of the month.
Rain
How was the weather last September in Salt Lake City?
Climate Change over Years
The climate in Salt Lake City in September has not changed much over the last 43 years.
The average temperature was the lowest in 1984 (+14°C) and the highest in 2021 (+20°C). The driest year was 2008 with only 265 mm of rainfall, and the wettest year was 2019 with 885 mm.
FAQ
Is September a good time to visit Salt Lake City?
Can you sunbathe in Salt Lake City in September?
Is Salt Lake City rainy in September?
Is it sunny in Salt Lake City in September?
Other cities in USA
Monthly weather in Salt Lake City
Source of the data
For this page, we’ve looked at the typical weather in Salt Lake City, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.