September weather forecast
Stanwood, WA

Weather in September

September, the first month of the autumn in Stanwood, is also an enjoyable month, with an average temperature ranging between max 66.2°F (19°C) and min 49.1°F (9.5°C).

Temperature

In September, the average high-temperature marginally drops from an agreeable 72.3°F (22.4°C) in August to an enjoyable 66.2°F (19°C). In September, in Stanwood, the average low-temperature is 49.1°F (9.5°C).

Humidity

In Stanwood, the average relative humidity in September is 78%.

Rainfall

In Stanwood, in September, during 13.5 rainfall days, 2.05" (52mm) of precipitation is typically accumulated. Throughout the year, there are 188.6 rainfall days, and 34.92" (887mm) of precipitation is accumulated.

Snowfall

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

Daylight

In Stanwood, the average length of the day in September is 12h and 34min.
On the first day of September in Stanwood, sunrise is at 6:27 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 6:51 pm PDT.

Sunshine

The average sunshine in September is 9.2h.

UV index

In Stanwood, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The average daily UV index of 4 in September transform into the following instructions:
Take precautions - Protection against sunburn is recommended. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.
[Resources]

FAQ

What is the temperature in September in Stanwood?

In Stanwood, Washington, in September, the average high-temperature is 66.2°F (19°C), and the average low-temperature is 49.1°F (9.5°C).

What is the average humidity in September in Stanwood?

The average relative humidity in September is 78%.

How many days does it rain in September in Stanwood?

In Stanwood, in September, during 13.5 rainfall days, 2.05" (52mm) of precipitation is typically accumulated.

When it does not snow in Stanwood?

In Stanwood, Washington, snow does not fall in May through October.

What is the average length of the day in September in Stanwood?

In September, the average day length in Stanwood, Washington, is 12h and 34min.

When is the sunrise / sunset in September in Stanwood?

On the first day of September in Stanwood, sunrise is at 6:27 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 7:07 am and sunset at 6:51 pm PDT.

How many hours of sunshine does Stanwood have in September?

In Stanwood, the average sunshine duration in September is 9.2h.

What is the UV index intensity in September in Stanwood?

The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Stanwood, WA

Average temperature in September - Stanwood, WA
  • Average high temperature in September: 66.2°F

The warmest month (with the highest average high temperature) is August (72.3°F).
The month with the lowest average high temperature is December (41.7°F).

  • Average low temperature in September: 49.1°F

The month with the highest average low temperature is August (51.6°F).
The coldest month (with the lowest average low temperature) is February (33.8°F).

[Resources]

Average pressure in September
Stanwood, WA

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

The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is August (30"Hg).

[Resources]

Average wind speed in September
Stanwood, WA

Average wind speed in September - Stanwood, WA
  • Average wind speed in September: 3.9mph

The windiest months (with the highest average wind speed) are January and November (5.6mph).
The calmest month (with the lowest average wind speed) is August (3.3mph).

[Resources]

Average humidity in September
Stanwood, WA

Average humidity in September - Stanwood, WA
  • Average humidity in September: 78%

The months with the highest relative humidity are January, February, November and December (85%).
The month with the lowest relative humidity is July (73%).

[Resources]

Average rainfall in September
Stanwood, WA

Average rainfall in September - Stanwood, WA
  • Average rainfall in September: 2.05"

The wettest month (with the highest rainfall) is November (4.92").
The driest month (with the least rainfall) is July (0.51").

[Resources]

Average rainfall days in September
Stanwood, WA

Average rainfall days in September - Stanwood, WA
  • Average rainfall days in September: 13.5 days

The month with the highest number of rainy days is March (20.9 days).
The month with the least rainy days is August (6.9 days).

[Resources]

Average snowfall in September
Stanwood, WA

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

The month with the highest snowfall is February (4.45").
The months with the least snowfall are May, June, July, August, September and October (0").

[Resources]

Average snowfall days in September
Stanwood, WA

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

The month with the highest number of snowfall days is February (4.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

[Resources]

Average daylight in September /
Average sunshine in September
Stanwood, WA

Average daylight in September / Average sunshine in September - Stanwood, WA
  • Average daylight in September: 12h and 34min

The month with the longest days is June (Average daylight: 16h and 1min).
The month with the shortest days is December (Average daylight: 8h and 25min).

  • Average sunshine in September: 9h and 12min

The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is December (Average sunshine: 4h and 6min).

[Resources]

Average sunshine days in September
Stanwood, WA

Average sunshine days in September - Stanwood, WA
  • Average sunshine days in September: 15.2 days

The month with the most sunshine days is August (22 days).
The month with the least sunshine days is March (8.1 days).

[Resources]

Average UV index in September
Stanwood, WA

Average UV index in September - Stanwood, 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, October, November and December (UV index 2).

[Resources]

Average cloud cover in September
Stanwood, WA

Average cloud cover in September - Stanwood, WA
  • Average cloud cover in September: 34

The month with the most cloud cover is December (Cloud cover 57).
The months with the least cloud cover are July and August (Cloud cover 26).

[Resources]

Average visibility in September
Stanwood, WA

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

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

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location