September weather forecast
Woodway, WA

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Weather in September

The first month of the autumn, September, is still a refreshing month in Woodway, Washington, with an average temperature fluctuating between 51.6°F (10.9°C) and 67.6°F (19.8°C).

Temperature

With the arrival of September, Woodway notices a mild change in the average high-temperature, sliding from August's warm 73.9°F (23.3°C) to an enjoyable 67.6°F (19.8°C). Woodway's average low-temperature is measured at a cool 51.6°F (10.9°C) during September.

Humidity

In Woodway, the average relative humidity in September is 76%.

Rainfall

In Woodway, in September, during 11.9 rainfall days, 1.42" (36mm) of precipitation is typically accumulated. Throughout the year, there are 173 rainfall days, and 25" (635mm) of precipitation is accumulated.

Snowfall

May through October are months without snowfall.

Daylight

In September, the average length of the day is 12h and 33min.
On the first day of September, sunrise is at 6:29 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 6:50 pm PDT.

Sunshine

The average sunshine in September is 9.5h.

UV index

In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: The maximum daily UV index, 4 in September, converts into the following recommendations:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Updated: Aug 20, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Woodway in September?

Woodway in September has an average high-temperature of 67.6°F (19.8°C) and an average low-temperature of 51.6°F (10.9°C).

What is the average humidity in September?

In Woodway, the average relative humidity in September is 76%.

How much does it rain in September?

In Woodway, in September, it is raining for 11.9 days, with typically 1.42" (36mm) of accumulated precipitation.

When it does not snow?

In Woodway, snow does not fall in May through October.

How many hours of daylight does Woodway have in September?

In Woodway, the average day length in September is 12h and 33min.

When are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:29 am and sunset at 7:49 pm. On the last day of the month, sunrise is at 7:08 am and sunset at 6:50 pm PDT.

How long on average sun shines in September?

In Woodway, the average sunshine duration in September is 9.5h.

What is the UV index intensity in September?

In September, the average daily maximum UV index is 4. A UV Index estimate of 3 to 5 represents a medium hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Woodway, WA

Average temperature in September - Woodway, WA
  • Average high temperature in September: 67.6°F

The warmest month (with the highest average high temperature) is August (73.9°F).
The month with the lowest average high temperature is December (43.3°F).

  • Average low temperature in September: 51.6°F

The month with the highest average low temperature is August (54.1°F).
The coldest month (with the lowest average low temperature) is December (35.8°F).

Average pressure in September
Woodway, WA

Average pressure in September - Woodway, WA
  • Average pressure in September: 30.01"Hg

The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are March, August and September (30.01"Hg).

Average wind speed in September
Woodway, WA

Average wind speed in September - Woodway, WA
  • Average wind speed in September: 4mph

The windiest month (with the highest average wind speed) is November (5.9mph).
The calmest month (with the lowest average wind speed) is August (3.5mph).

Average humidity in September
Woodway, WA

Average humidity in September - Woodway, WA
  • Average humidity in September: 76%

The months with the highest relative humidity are January, February and December (84%).
The month with the lowest relative humidity is July (72%).

Average rainfall in September
Woodway, WA

Average rainfall in September - Woodway, WA
  • Average rainfall in September: 1.42"

The wettest month (with the highest rainfall) is December (3.5").
The driest month (with the least rainfall) is July (0.39").

Average rainfall days in September
Woodway, WA

Average rainfall days in September - Woodway, WA
  • Average rainfall days in September: 11.9 days

The month with the highest number of rainy days is March (19.8 days).
The month with the least rainy days is August (6.8 days).

Average snowfall in September
Woodway, WA

Average snowfall in September - Woodway, WA
  • Average snowfall in September: 0"

The month with the highest snowfall is February (3.58").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in September
Woodway, WA

Average snowfall days in September - Woodway, WA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (4.7 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
Woodway, WA

Average daylight in September / Average sunshine in September - Woodway, 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 3min

The month with the most sunshine is August (Average sunshine: 10h and 48min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).

Average sunshine days in September
Woodway, WA

Average sunshine days in September - Woodway, WA
  • Average sunshine days in September: 15.9 days

The month with the most sunshine days is August (22.5 days).
The month with the least sunshine days is November (9.2 days).

Average UV index in September
Woodway, WA

Average UV index in September - Woodway, WA
  • Average UV index in September: 4

The months with the highest UV index are June and 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
Woodway, WA

Average cloud cover in September - Woodway, WA
  • Average cloud cover in September: 32

The months with the most cloud cover are January and December (Cloud cover 53).
The month with the least cloud cover is August (Cloud cover 25).

Average visibility in September
Woodway, WA

Average visibility in September - Woodway, WA
  • Average visibility in September: 6mi

The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).

Woodway, Washington, USA

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