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 in Auburn slightly decreases in September, shifting from a warm 76.5°F (24.7°C) in August to a pleasant 69.1°F (20.6°C). The month of September records an average low-temperature of 48.6°F (9.2°C) in Auburn.Humidity
In Auburn, the average relative humidity in September is 74%.Rainfall
In Auburn, in September, it is raining for 11.8 days, with typically 1.02" (26mm) of accumulated precipitation. Throughout the year, in Auburn, Washington, there are 162.5 rainfall days, and 17.87" (454mm) of precipitation is accumulated.Snowfall
May through October are months without snowfall.Daylight
The average length of the day in September in Auburn is 12h and 32min.On the first day of September, sunrise is at 6:29 am and sunset at 7:48 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 6:49 pm PDT.
Sunshine
The average sunshine in September is 9.3h.UV index
The average daily maximum UV index in September in Auburn is 4. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In September, a daily maximum UV index of 4 leads to the following instructions:
Act with care - Obligation to protect against skin and eye damage is highlighted. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Stay sun-safe with clothing that is both closely woven and worn loosely.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Auburn in September?
What is the average humidity in September in Auburn?
How many days does it rain in September in Auburn?
When it does not snow in Auburn?
How many hours of daylight does Auburn have in September?
What time are sunrise and sunset in September in Auburn?
How many hours of sunshine does Auburn have in September?
What is the UV index reading in September in Auburn?
Average temperature in September
Auburn, WA
- Average high temperature in September: 69.1°F
The warmest month (with the highest average high temperature) is August (76.5°F).
The month with the lowest average high temperature is December (41.9°F).
- Average low temperature in September: 48.6°F
The month with the highest average low temperature is August (51.4°F).
The coldest month (with the lowest average low temperature) is December (32.5°F).
Average pressure in September
Auburn, WA
- Average pressure in September: 30.01"Hg
The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).
Average wind speed in September
Auburn, WA
- Average wind speed in September: 3.7mph
The windiest month (with the highest average wind speed) is January (4.9mph).
The calmest month (with the lowest average wind speed) is August (3.4mph).
Average humidity in September
Auburn, WA
- Average humidity in September: 74%
The months with the highest relative humidity are January, February and December (86%).
The month with the lowest relative humidity is July (69%).
Average rainfall in September
Auburn, WA
- Average rainfall in September: 1.02"
The wettest month (with the highest rainfall) is January (2.6").
The driest month (with the least rainfall) is July (0.39").
Average rainfall days in September
Auburn, WA
- Average rainfall days in September: 11.8 days
The month with the highest number of rainy days is November (17.5 days).
The month with the least rainy days is August (6.3 days).
Average snowfall in September
Auburn, WA
- Average snowfall in September: 0"
The month with the highest snowfall is February (0.79").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in September
Auburn, WA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (2.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Auburn, WA
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in September: 9h and 2min
The month with the most sunshine is August (Average sunshine: 10h and 54min).
The months with the least sunshine are January and December (Average sunshine: 4h and 18min).
Average sunshine days in September
Auburn, WA
- Average sunshine days in September: 16.3 days
The month with the most sunshine days is August (21.8 days).
The month with the least sunshine days is February (10.3 days).
Average UV index in September
Auburn, WA
- Average UV index in September: 4
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Auburn, WA
- Average cloud cover in September: 35
The months with the most cloud cover are January and December (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in September
Auburn, WA
- Average visibility in September: 5mi
The months with the highest visibility are July and August (6mi).
The month with the lowest visibility is December (4mi).
Auburn, Washington, USA
Weather forecast for your location
2. Allow the app to use your location