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
With the onset of September, Sterling's climate undergoes a slight change as the average high-temperature moves from 84°F (28.9°C) in August to a still moderately hot 77.9°F (25.5°C). In Sterling, the nighttime temperature averages to a moderate 58.1°F (14.5°C) during September.Humidity
The average relative humidity in September is 71%.Rainfall
In Sterling, in September, during 10.5 rainfall days, 1.22" (31mm) of precipitation is typically accumulated. Throughout the year, there are 105 rainfall days, and 15.94" (405mm) of precipitation is accumulated.Snowfall
In Sterling, snow does not fall in May 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 6:53 am and sunset at 7:56 pm. On the last day of the month, sunrise is at 7:21 am and sunset at 7:08 pm CDT.
Sunshine
In Sterling, Nebraska, the average sunshine in September is 9.1h.UV index
In September, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the average person.Note: The maximum daily UV index of 5 during September translates into the following directions:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are September temperatures 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?
What is the average length of the day in September in Sterling?
What time are sunrise and sunset in September in Sterling?
How many hours of sunshine does Sterling have in September?
What is the UV index intensity in September in Sterling?
Average temperature in September
Sterling, NE
- Average high temperature in September: 77.9°F
The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is January (33.1°F).
- Average low temperature in September: 58.1°F
The month with the highest average low temperature is July (67.3°F).
The coldest month (with the lowest average low temperature) is January (19.4°F).
Average pressure in September
Sterling, NE
- Average pressure in September: 29.99"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed in September
Sterling, NE
- Average wind speed in September: 8.5mph
The windiest months (with the highest average wind speed) are March and April (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (7.3mph).
Average humidity in September
Sterling, NE
- Average humidity in September: 71%
The month with the highest relative humidity is January (77%).
The month with the lowest relative humidity is October (66%).
Average rainfall in September
Sterling, NE
- Average rainfall in September: 1.22"
The wettest month (with the highest rainfall) is May (2.83").
The driest months (with the least rainfall) are January and February (0.35").
Average rainfall days in September
Sterling, NE
- Average rainfall days in September: 10.5 days
The month with the highest number of rainy days is May (14.8 days).
The month with the least rainy days is February (3 days).
Average snowfall in September
Sterling, NE
- Average snowfall in September: 0"
The month with the highest snowfall is January (1.1").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in September
Sterling, NE
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is February (6.4 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Sterling, NE
- 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: 9h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 5h and 6min).
Average sunshine days in September
Sterling, NE
- Average sunshine days in September: 17.8 days
The month with the most sunshine days is November (24.2 days).
The month with the least sunshine days is May (13.8 days).
Average UV index in September
Sterling, NE
- 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, NE
- Average cloud cover in September: 27
The months with the most cloud cover are January and March (Cloud cover 44).
The month with the least cloud cover is July (Cloud cover 25).
Average visibility in September
Sterling, NE
- 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, Nebraska, USA
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