Contents
- 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
Weather in September
Temperature
The average high-temperature shows a slight dip in September, from August's warm 78.3°F (25.7°C) to an agreeable 70.5°F (21.4°C). During September, Sterling's temperature records a considerable difference from its daily highs to an average low of 46.9°F (8.3°C).Humidity
In September, the average relative humidity is 43%.Rainfall
In Sterling, during September, the rain falls for 9.6 days and regularly aggregates up to 0.94" (24mm) of precipitation. Throughout the year, there are 115.2 rainfall days, and 15.71" (399mm) of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall. 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
In September, the average length of the day is 12h and 26min.On the first day of the month, sunrise is at 6:56 am and sunset at 7:56 pm. On the last day of September, sunrise is at 7:22 am and sunset at 7:10 pm MDT.
Sunshine
The average sunshine in September is 10.1h.UV index
In September, the average daily maximum UV index is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the average 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. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September?
What is the average humidity in September?
How many days does it rain in September?
When does it start snowing?
How many hours of daylight does Sterling have in September?
When is the sunrise / sunset in September?
How long on average sun shines in September in Sterling?
How high is the UV index in September?
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).
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).
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).
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%).
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").
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).
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").
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).
Average daylight in September /
Average sunshine in September
Sterling, UT
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in September: 10h and 1min
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).
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).
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).
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).
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).
Sterling, Utah, USA
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