Salt Lake City
Utah, USA
Long term weather forecast
Long term weather forecast

September weather forecast and Climate
Salt Lake City, UT

  • Average high temperature in September: 26.2°C

Warmest month (with highest average high temperature) is July (33.7°C).
Month with lowest average high temperature is January (3°C).

  • Average low temperature in September: 11.7°C

Month with highest average low temperature is July (18.2°C).
Coldest month (with lowest average low temperature) is January (-5.8°C).

  • Average humidity in September: 45.6%

Month with highest relative humidity is December (74.3%).
Month with lowest relative humidity is July (35.9%).

  • Average rainfall in September: 30.7mm

Wettest month (with highest rainfall) is April (50.5mm).
Driest month (with lowest rainfall) is July (15.5mm).

  • Average rainfall days in September: 5.8 days

Month with highest number of rainy days is January (10.1 days).
Month with lowest number of rainy days is July (4.4 days).

  • Average snowfall in September: 0mm

Month with highest snowfall is December (335.3mm).
Months with lowest snowfall are June, July, August and September (0mm).

  • Average snowfall days in September: 0 days

Month with highest number of snowfall days is January (8.5 days).
Months with lowest number of snowfall days are June, July, August and September (0 days).

  • Average daylight in September: 12h

Months with longest days are June and July (Average daylight: 15h).
Month with shortest days is December (Average daylight: 9h).

  • Average sunshine in September: 10h

Month with most sunshine is July (Average sunshine: 12.3h).
Month with least sunshine is December (Average sunshine: 3.6h).

  • Average UV index in September: 7

Months with highest UV index are June and July (UV index 10).
Months with lowest UV index are January, November and December (UV index 2).

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