September weather forecast
Sterling, UT

Weather in September

The first month of the autumn, September, is also an agreeable month in Sterling, Utah, with an average temperature varying between 70.5°F (21.4°C) and 46.9°F (8.3°C).

Temperature

In September, the average high-temperature marginally drops from a moderately hot 78.3°F (25.7°C) in August to a pleasant 70.5°F (21.4°C). In Sterling, in September, the average low-temperature is 46.9°F (8.3°C).

Humidity

In Sterling, the average relative humidity in September is 43%.

Rainfall

In Sterling, Utah, during 9.6 rainfall days, 0.94" (24mm) of precipitation is typically accumulated. In Sterling, during the entire year, the rain falls for 115.2 days and collects up to 15.71" (399mm) of precipitation.

Snowfall

Months with snowfall are January through May, September through December. September is the first month it typically snows. Throughout September, in the average 0.2 snowfall days, it receives 0.24" (6mm) of snow. In Sterling, during the entire year, snow falls for 66.3 days and aggregates up to 48.94" (1243mm) of snow.

Daylight

The average length of the day in September is 12h and 26min.
On the first day of September in Sterling, sunrise is at 6:55 am and sunset at 7:57 pm. On the last day of the month, sunrise is at 7:22 am and sunset at 7:11 pm MDT.

Sunshine

The average sunshine in September is 10.1h.

UV index

In Sterling, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the ordinary person.
Note: The average daily UV index of 4 in September transform into the following instructions:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in September in Sterling?

In September, in Sterling, the average high-temperature is 70.5°F (21.4°C), and the average low-temperature is 46.9°F (8.3°C).

What is the average humidity in September in Sterling?

The average relative humidity in September is 43%.

How much does it rain in Sterling in September?

In September, the rain falls for 9.6 days. Throughout September, 0.94" (24mm) of precipitation is accumulated.

When does it start snowing in Sterling?

September is the first month it typically snows in Sterling, Utah. Throughout September, in the average 0.2 snowfall days, it receives 0.24" (6mm) of snow.

How many hours of daylight does Sterling have in September?

In Sterling, the average day length in September is 12h and 26min.

When is the sunrise / sunset in September in Sterling?

In September, on the first day of the month, sunrise is at 6:55 am and sunset at 7:57 pm. On the last day of the month, in Sterling, Utah, sunrise is at 7:22 am and sunset at 7:11 pm MDT.

How long on average sun shines in September in Sterling?

In September, the average sunshine duration is 10.1h.

What is the UV index reading in September in Sterling?

In Sterling, Utah, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Sterling, UT

Average temperature in September - Sterling, UT
  • Average high temperature in September: 70.5°F

The warmest month (with the highest average high temperature) is July (80.2°F).
The months with the lowest average high temperature are January and December (31.5°F).

  • Average low temperature in September: 46.9°F

The month with the highest average low temperature is July (55°F).
The coldest month (with the lowest average low temperature) is January (15.3°F).

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Average pressure in September
Sterling, UT

Average pressure in September - Sterling, UT
  • Average pressure in September: 29.94"Hg

The month with the highest atmospheric pressure is January (30.24"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).

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Average wind speed in September
Sterling, UT

Average wind speed in September - Sterling, UT
  • Average wind speed in September: 5.2mph

The windiest month (with the highest average wind speed) is April (6.8mph).
The calmest month (with the lowest average wind speed) is January (4.8mph).

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Average humidity in September
Sterling, UT

Average humidity in September - Sterling, UT
  • Average humidity in September: 43%

The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is June (35%).

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Average rainfall in September
Sterling, UT

Average rainfall in September - Sterling, UT
  • Average rainfall in September: 0.94"

The wettest month (with the highest rainfall) is March (1.73").
The driest month (with the least rainfall) is June (0.59").

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Average rainfall days in September
Sterling, UT

Average rainfall days in September - Sterling, UT
  • Average rainfall days in September: 9.6 days

The month with the highest number of rainy days is July (12.7 days).
The month with the least rainy days is June (6.3 days).

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Average snowfall in September
Sterling, UT

Average snowfall in September - Sterling, UT
  • Average snowfall in September: 0.24"

The month with the highest snowfall is January (9.92").
The months with the least snowfall are June, July and August (0").

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Average snowfall days in September
Sterling, UT

Average snowfall days in September - Sterling, UT
  • Average snowfall days in September: 0.2 days

The month with the highest number of snowfall days is December (14.1 days).
The months with the least snowfall days are June, July and August (0 days).

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Average daylight in September /
Average sunshine in September
Sterling, UT

Average daylight in September / Average sunshine in September - Sterling, UT
  • Average daylight in September: 12h and 26min

The month with the longest days is June (Average daylight: 14h and 53min).
The month with the shortest days is December (Average daylight: 9h and 28min).

  • Average sunshine in September: 10h and 6min

The month with the most sunshine is August (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 36min).

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Average sunshine days in September
Sterling, UT

Average sunshine days in September - Sterling, UT
  • Average sunshine days in September: 16.9 days

The month with the most sunshine days is June (20.8 days).
The month with the least sunshine days is February (11.2 days).

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Average UV index in September
Sterling, UT

Average UV index in September - Sterling, UT
  • Average UV index in September: 4

The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).

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Average cloud cover in September
Sterling, UT

Average cloud cover in September - Sterling, UT
  • Average cloud cover in September: 11

The months with the most cloud cover are January and February (Cloud cover 40).
The months with the least cloud cover are August and September (Cloud cover 11).

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Average visibility in September
Sterling, UT

Average visibility in September - Sterling, UT
  • Average visibility in September: 6mi

The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).

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