September weather - Autumn 2024 - Salt Lake City, UT

Weather in September
Frequently asked questions
Average temperature in September
Average pressure in September
Average wind speed in September
Average humidity in September
Average rainfall in September
Average rainfall days in September
Average snowfall in September
Average snowfall days in September
Average daylight in September
Average sunshine in September
Average sunshine days in September
Average UV index in September
Average cloud cover in September
Average visibility in September

A stunning autumn panorama of the Salt Lake City landscape in Utah

Weather in September

In September, Salt Lake City, Utah embraces the start of the fall season. The temperatures decline from the August heights, hinting at the swift approach of autumn. As the city walks into October, it further embraces the fall with even cooler temperatures. September's moderate weather makes it an excellent time for hiking and appreciating the fall foliage, particularly in the nearby mountain ranges. With the decrease in daylight hours, the city starts preparing for the shorter days of winter.

Temperature

Salt Lake City in September undergoes a mild reduction in the average high-temperature, shifting from August's moderately hot 82.8°F (28.2°C) to an agreeable 73.2°F (22.9°C). During the nights in September, Salt Lake City experiences a consistent average temperature of 52.7°F (11.5°C).

Humidity

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

Rainfall

In Salt Lake City, in September, during 5 rainfall days, 0.35" (9mm) of precipitation is typically accumulated. Throughout the year, there are 71.6 rainfall days, and 4.21" (107mm) of precipitation is accumulated.

Snowfall

May through September are months without snowfall.

Daylight

In September, the average length of the day in Salt Lake City is 12h and 27min.
On the first day of the month, sunrise is at 6:55 am and sunset at 7:59 pm. On the last day of September, in Salt Lake City, Utah, sunrise is at 7:23 am and sunset at 7:10 pm MDT.

Sunshine

The average sunshine in September in Salt Lake City is 10h.

UV index

The average daily maximum UV index in September in Salt Lake City is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for the ordinary person.
Note: In September, the maximum UV index of 4 suggests these recommendations:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.

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Frequently asked questions

What is the temperature in September in Salt Lake City?

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

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

In Salt Lake City, in September, during 5 rainfall days, 0.35" (9mm) of precipitation is typically accumulated.

When it does not snow in Salt Lake City?

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

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.

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

In Salt Lake City, the average day length in September is 12h and 27min.

What time are sunrise and sunset in September in Salt Lake City?

In September, on the first day of the month, sunrise is at 6:55 am and sunset at 7:59 pm. On the last day of the month, in Salt Lake City, sunrise is at 7:23 am and sunset at 7:10 pm MDT.

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

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

How high is the UV index in September in Salt Lake City?

In Salt Lake City, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health threat from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A September O N D

Aug

September

Oct

Average high temperature

82.8°F 28.2°C

73.2°F 22.9°C

58.3°F 14.6°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

6.6mph 10.6km/h

6.3mph 10.1km/h

6.4mph 10.3km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

22.5

22.4

22.8

Average UV index

Average cloud cover

12%

18%

Average visibility

6mi 9.7km

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).

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Average pressure in September
Salt Lake City, UT

Average pressure in September: 29.95"Hg

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

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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).

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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%).

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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").

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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).

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Average snowfall in September
Salt Lake City, UT

Average snowfall in September: 0"

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

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Average snowfall days in September
Salt Lake City, UT

Average snowfall days in September: 0 days

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

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Average daylight in September /
Average sunshine in September
Salt Lake City, UT

Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).

Average sunshine in September: 10h and 0min

The months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 42min).

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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).

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Average UV index in September
Salt Lake City, UT

Average UV index in September: 4

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

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Average cloud cover in September
Salt Lake City, UT

Average cloud cover in September: 12

The 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).

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Average visibility in September
Salt Lake City, UT

Average visibility in September: 6mi

The 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).

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September weather forecast
Salt Lake City, UT

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