September weather forecast and climate
Salt Lake City, UT

A stunning autumn panorama of the Salt Lake City landscape in Utah
A stunning autumn panorama of the Salt Lake City landscape in Utah
September, the first month of the autumn, in Salt Lake City, is also an agreeable month, with temperature in the range of an average high of 73.2°F (22.9°C) and an average low of 52.7°F (11.5°C).

Temperature

In Salt Lake City, Utah, the average high-temperature drops, from a warm 82.8°F (28.2°C) in August, to an agreeable 73.2°F (22.9°C). In September, the average low-temperature is 52.7°F (11.5°C).

Humidity

In Salt Lake City, the average relative humidity is 43%.

Rainfall

In Salt Lake City, it is raining for 5 days, with typically 0.35" (9mm) of accumulated precipitation. In Salt Lake City, Utah, during the entire year, the rain falls for 71.6 days and collects up to 4.21" (107mm) of precipitation.

Snowfall

May through September are months without snowfall in Salt Lake City.

Daylight

In September, the average length of the day in Salt Lake City is 12.4h.

Sunshine

The average sunshine in September is 10h.

UV index

The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium health hazard from unprotected exposure to the Sun's UV rays for ordinary individuals.
Note: In September, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun.

What is the temperature in September in Salt Lake City?

In September, in Salt Lake City, the average high-temperature is 73.2°F (22.9°C), and the average low-temperature is 52.7°F (11.5°C).

What is the average humidity in September in Salt Lake City?

In Salt Lake City, the average relative humidity in September is 43%.

How many days does it rain in September in Salt Lake City?

In Salt Lake City, during September, the rain falls for 5 days and regularly aggregates up to 0.35" (9mm) of precipitation.

Does it snow in Salt Lake City in September?

In Salt Lake City, Utah, in September, it doesn't snow. In October, it regularly snows.

When it does not snow in Salt Lake City?

In Salt Lake City snow does not fall in May through September.

What is the average length of the day in September in Salt Lake City?

In September, the average length of the day in Salt Lake City, Utah, is 12.4h.

How many hours of sunshine does Salt Lake City have in September?

In September, the average sunshine in Salt Lake City is 10h.

What is the UV index intensity in September in Salt Lake City?

The average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health threat from unprotected exposure to the UV radiation.
Average temperature in September - Salt Lake City, UT
  • Average high temperature in September: 73.2°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (34°F).

  • Average low temperature in September: 52.7°F

The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (21°F).

Average pressure in September - Salt Lake City, UT
  • Average pressure in September: 29.95"

The month with the highest atmospheric pressure is January (30.28").
The month with the lowest atmospheric pressure is June (29.87").

Average wind speed in September - Salt Lake City, UT
  • Average wind speed in September: 5.8mph

The windiest month (with the highest average wind speed) is March (6.6mph).
The calmest month (with the lowest average wind speed) is January (5mph).

Average humidity in September - Salt Lake City, UT
  • Average humidity in September: 43%

The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is July (37%).

Average rainfall in September - Salt Lake City, UT
  • Average rainfall in September: 0.35"

The wettest month (with the highest rainfall) is March (0.51").
The driest month (with the least rainfall) is August (0.2").

Average rainfall days in September - Salt Lake City, UT
  • Average rainfall days in September: 5 days

The month with the highest number of rainy days is April (8.9 days).
The month with the least rainy days is June (4 days).

Average snowfall in September - Salt Lake City, UT
  • Average snowfall in September: 0"

The month with the highest snowfall is January (2.68").
Months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in September - Salt Lake City, UT
  • Average snowfall days in September: 0 days

Months with the highest number of snowfall days are January and February (6.6 days).
Months with the least snowfall days are June, July, August and September (0 days).

Average daylight in September / Average sunshine in September - Salt Lake City, UT
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 15.1h).
The month with the shortest days is December (Average daylight: 9.3h).

  • Average sunshine in September: 10h

Months with the most sunshine are July and August (Average sunshine: 12h).
The month with the least sunshine is January (Average sunshine: 5.7h).

Average sunshine days in September - Salt Lake City, UT
  • Average sunshine days in September: 22.4 days

The month with the most sunshine days is June (23.8 days).
The month with the least sunshine days is February (19 days).

Average UV index in September - Salt Lake City, UT
  • Average UV index in September: 4

Months with the highest UV index are June, July and August (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 2).

Average cloud cover in September - Salt Lake City, UT
  • Average cloud cover in September: 12

Months with the most cloud cover are January and February (Cloud cover 38).
The month with the least cloud cover is August (Cloud cover 9).

Average visibility in September - Salt Lake City, UT
  • Average visibility in September: 6mi

Months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).