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 onset of September results in a small decrease in the average high-temperature, moderately receding from 85.5°F (29.7°C) in August to a still warm 78.1°F (25.6°C). September nights in Aurora, Colorado, experience a distinct temperature drop from the daily highs, with an average low-temperature of 53.1°F (11.7°C).Humidity
The average relative humidity in September in Aurora, Colorado, is 43%.Rainfall
In Aurora, during September, the rain falls for 9 days and regularly aggregates up to 0.75" (19mm) of precipitation. Throughout the year, there are 98.3 rainfall days, and 11.69" (297mm) of precipitation is accumulated.Snowfall
In Aurora, snow does not fall in June through September.Daylight
In September, the average length of the day in Aurora is 12h and 26min.On the first day of September in Aurora, sunrise is at 6:28 am and sunset at 7:29 pm. On the last day of the month, sunrise is at 6:55 am and sunset at 6:42 pm MDT.
Sunshine
In September, the average sunshine is 11h.UV index
In September, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: The daily high UV index of 5 in September translates into this advice:
Be vigilant - Suggestions to stave off sun damage are provided. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Frequently asked questions
What is the temperature in September in Aurora?
What is the average humidity in September in Aurora?
How much does it rain in Aurora in September?
When it does not snow in Aurora?
Does it snow in Aurora in September?
What is the average length of the day in September in Aurora?
When is the sunrise / sunset in September in Aurora?
How long on average sun shines in September in Aurora?
What is the UV index intensity in September in Aurora?
Average temperature in September
Aurora, CO
- Average high temperature in September: 78.1°F
The warmest month (with the highest average high temperature) is July (86.5°F).
The month with the lowest average high temperature is December (40.1°F).
- Average low temperature in September: 53.1°F
The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is December (21.7°F).
Average pressure in September
Aurora, CO
- Average pressure in September: 30"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The months with the lowest atmospheric pressure are April and June (29.9"Hg).
Average wind speed in September
Aurora, CO
- Average wind speed in September: 6.5mph
The windiest month (with the highest average wind speed) is April (8mph).
The calmest months (with the lowest average wind speed) are September and December (6.5mph).
Average humidity in September
Aurora, CO
- Average humidity in September: 43%
The months with the highest relative humidity are January and February (64%).
The month with the lowest relative humidity is August (42%).
Average rainfall in September
Aurora, CO
- Average rainfall in September: 0.75"
The wettest month (with the highest rainfall) is May (1.97").
The driest month (with the least rainfall) is December (0.43").
Average rainfall days in September
Aurora, CO
- Average rainfall days in September: 9 days
The month with the highest number of rainy days is July (14.1 days).
The month with the least rainy days is February (3 days).
Average snowfall in September
Aurora, CO
- Average snowfall in September: 0"
The month with the highest snowfall is March (4.49").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Aurora, CO
- Average snowfall days in September: 0.1 days
The month with the highest number of snowfall days is February (8 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in September /
Average sunshine in September
Aurora, CO
- 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 24min).
- Average sunshine in September: 11h and 0min
The months with the most sunshine are June and July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 6h and 42min).
Average sunshine days in September
Aurora, CO
- Average sunshine days in September: 16.3 days
The month with the most sunshine days is January (22.9 days).
The month with the least sunshine days is July (12.2 days).
Average UV index in September
Aurora, 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
Aurora, CO
- Average cloud cover in September: 15
The month with the most cloud cover is April (Cloud cover 27).
The month with the least cloud cover is September (Cloud cover 15).
Average visibility in September
Aurora, 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).
Aurora, Colorado, USA
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