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 aligns with a soft reduction in the average high-temperature, gently falling from a moderately hot 80.4°F (26.9°C) in August to a pleasant 72.9°F (22.7°C). During September, Woodinville's temperature averages to a cool 54.5°F (12.5°C) at night.Humidity
The average relative humidity in September in Woodinville is 79%.Rainfall
In Woodinville, during September, the rain falls for 12.7 days and regularly aggregates up to 2.24" (57mm) of precipitation. Throughout the year, there are 154.6 rainfall days, and 34.02" (864mm) of precipitation is accumulated.Snowfall
In Woodinville, snow does not fall in June through September.Daylight
In September, the average length of the day is 12h and 28min.On the first day of September in Woodinville, sunrise is at 6:21 am and sunset at 7:27 pm. On the last day of the month, sunrise is at 6:51 am and sunset at 6:37 pm EDT.
Sunshine
In September, the average sunshine is 8.1h.UV index
In Woodinville, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum daily UV index of 4 during September morphs into the following directions:
Be vigilant - Suggestions to stave off sun damage are provided. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Woodinville in September?
What is the average humidity in September?
How many days does it rain in September?
When it does not snow?
Does it snow in September?
What is the average length of the day in September?
When are sunrise and sunset in September?
How many hours of sunshine does Woodinville have in September?
What is the UV index intensity in September?
Average temperature in September
Woodinville, NY
- Average high temperature in September: 72.9°F
The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (32.5°F).
- Average low temperature in September: 54.5°F
The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is January (20.1°F).
Average pressure in September
Woodinville, NY
- Average pressure in September: 30.06"Hg
The month with the highest atmospheric pressure is November (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in September
Woodinville, NY
- Average wind speed in September: 5.2mph
The windiest month (with the highest average wind speed) is March (7.5mph).
The calmest month (with the lowest average wind speed) is August (4.6mph).
Average humidity in September
Woodinville, NY
- Average humidity in September: 79%
The months with the highest relative humidity are February, October and December (80%).
The month with the lowest relative humidity is April (73%).
Average rainfall in September
Woodinville, NY
- Average rainfall in September: 2.24"
The wettest month (with the highest rainfall) is December (3.46").
The driest month (with the least rainfall) is February (2.17").
Average rainfall days in September
Woodinville, NY
- Average rainfall days in September: 12.7 days
The month with the highest number of rainy days is July (17.5 days).
The month with the least rainy days is January (6.7 days).
Average snowfall in September
Woodinville, NY
- Average snowfall in September: 0"
The month with the highest snowfall is February (5.55").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in September
Woodinville, NY
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (10.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Woodinville, NY
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in September: 8h and 1min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).
Average sunshine days in September
Woodinville, NY
- Average sunshine days in September: 15.1 days
The month with the most sunshine days is January (17.3 days).
The month with the least sunshine days is July (11.9 days).
Average UV index in September
Woodinville, NY
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Woodinville, NY
- Average cloud cover in September: 43
The month with the most cloud cover is February (Cloud cover 53).
The months with the least cloud cover are July and August (Cloud cover 39).
Average visibility in September
Woodinville, NY
- Average visibility in September: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January, February, March, May, June, July, August, September, October, November and December (5mi).
Woodinville, New York, USA
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