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
Sterling's progression into September involves a gentle drop in the average high-temperature, from a hot 86.2°F (30.1°C) in August to a moderately hot 78.8°F (26°C). In Sterling, following the steep rise of daytime temperatures, an average nighttime low of 56.3°F (13.5°C) is anticipated during September.Humidity
The least humid month is September, with an average relative humidity of 47%.Rainfall
In Sterling, in September, during 10.1 rainfall days, 0.98" (25mm) of precipitation is typically accumulated. In Sterling, during the entire year, the rain falls for 123.2 days and collects up to 15.39" (391mm) of precipitation.Snowfall
In Sterling, snow does not fall in June through September.Daylight
The average length of the day in September in Sterling is 12h and 27min.On the first day of September in Sterling, sunrise is at 6:20 am and sunset at 7:24 pm. On the last day of the month, sunrise is at 6:49 am and sunset at 6:35 pm MDT.
Sunshine
The average sunshine in September is 10.3h.UV index
The average daily maximum UV index in September in Sterling, Colorado, is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV radiation for the average person.Note: The maximum daily UV index of 5 in September interprets into the following recommendations:
Take heed. Individuals of lighter complexion can be burned in less than half an hour. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
Frequently asked questions
What is the usual temperature for Sterling in September?
What is the least humid month in Sterling?
What is the average humidity in September in Sterling?
How many days does it rain in September in Sterling?
When it does not snow in Sterling?
Does it snow in Sterling in September?
How many hours of daylight does Sterling have in September?
What time are sunrise and sunset in September in Sterling?
How long on average sun shines in September in Sterling?
What is the UV index reading in September in Sterling?
Average temperature in September
Sterling, CO
- Average high temperature in September: 78.8°F
The warmest month (with the highest average high temperature) is July (88.5°F).
The month with the lowest average high temperature is December (37.8°F).
- Average low temperature in September: 56.3°F
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is December (23°F).
Average pressure in September
Sterling, CO
- Average pressure in September: 29.94"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed in September
Sterling, CO
- Average wind speed in September: 9.5mph
The windiest month (with the highest average wind speed) is April (11.9mph).
The calmest month (with the lowest average wind speed) is August (9mph).
Average humidity in September
Sterling, CO
- Average humidity in September: 47%
The month with the highest relative humidity is January (65%).
The month with the lowest relative humidity is September (47%).
Average rainfall in September
Sterling, CO
- Average rainfall in September: 0.98"
The wettest month (with the highest rainfall) is May (2.95").
The driest month (with the least rainfall) is January (0.35").
Average rainfall days in September
Sterling, CO
- Average rainfall days in September: 10.1 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is February (4.2 days).
Average snowfall in September
Sterling, CO
- Average snowfall in September: 0"
The month with the highest snowfall is February (2.68").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Sterling, CO
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is February (6.7 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Sterling, CO
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in September: 10h and 2min
The months with the most sunshine are June and August (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 6h and 18min).
Average sunshine days in September
Sterling, CO
- Average sunshine days in September: 16.8 days
The month with the most sunshine days is January (22.3 days).
The month with the least sunshine days is July (9.8 days).
Average UV index in September
Sterling, CO
- Average UV index in September: 5
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).
Average cloud cover in September
Sterling, CO
- Average cloud cover in September: 19
The month with the most cloud cover is February (Cloud cover 33).
The month with the least cloud cover is August (Cloud cover 17).
Average visibility in September
Sterling, CO
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Sterling, Colorado, USA
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