September weather forecast
Warden, WA

Weather in September

The first month of the autumn, September, is also a moderately hot month in Warden, Washington, with temperature in the range of an average high of 77.4°F (25.2°C) and an average low of 56.1°F (13.4°C).

Temperature

In September, the average high-temperature decreases, from a hot 88°F (31.1°C) in August, to a warm 77.4°F (25.2°C). The average low-temperature, in Warden, is 56.1°F (13.4°C).

Humidity

The average relative humidity in September is 43%.

Rainfall

In Warden, during September, the rain falls for 4.2 days and regularly aggregates up to 0.24" (6mm) of precipitation. In Warden, Washington, during the entire year, the rain falls for 102 days and collects up to 7.4" (188mm) of precipitation.

Snowfall

Months with snowfall in Warden are January through April, September, November and December. September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 0.08" (2mm) of snow. In Warden, Washington, during the entire year, snow falls for 16.7 days, and aggregates up to 6.18" (157mm) of snow.

Daylight

In September, the average length of the day is 12.5h.

Sunshine

The average sunshine in Warden is 10.8h.

UV index

The average daily maximum UV index in Warden is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to the Sun's UV rays for the ordinary person.
Note: The average daily UV index of 4 in September transform into the following instructions:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the average humidity in September in Warden?

The average relative humidity in September in Warden, Washington, is 43%.

How many days does it rain in September in Warden?

In Warden, in September, during 4.2 rainfall days, 0.24" (6mm) of precipitation is typically accumulated.

When does it start to snow in Warden?

September is the first month it typically snows in Warden. Throughout September, in the average 0.1 snowfall days, it receives 0.08" (2mm) of snow.

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

In September, the average length of the day in Warden, Washington, is 12.5h.

How long on average sun shines in September in Warden?

In September, the average sunshine is 10.8h.

What is the UV index intensity in September in Warden?

The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium health risk from unsafe exposure to the Sun's UV rays.

Average temperature in September
Warden, WA

Average temperature in September - Warden, WA
  • Average high temperature in September: 77.4°F

The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is December (35.6°F).

  • Average low temperature in September: 56.1°F

The month with the highest average low temperature is August (62.8°F).
The coldest month (with the lowest average low temperature) is December (25.7°F).

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Average pressure in September
Warden, WA

Average pressure in September - Warden, WA
  • Average pressure in September: 29.95"

The month with the highest atmospheric pressure is January (30.18").
The month with the lowest atmospheric pressure is August (29.9").

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Average wind speed in September
Warden, WA

Average wind speed in September - Warden, WA
  • Average wind speed in September: 6.4mph

The windiest month (with the highest average wind speed) is April (8.1mph).
The calmest month (with the lowest average wind speed) is December (5.5mph).

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Average humidity in September
Warden, WA

Average humidity in September - Warden, WA
  • Average humidity in September: 43%

The month with the highest relative humidity is January (82%).
Months with the lowest relative humidity are July and August (36%).

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Average rainfall in September
Warden, WA

Average rainfall in September - Warden, WA
  • Average rainfall in September: 0.24"

The wettest months (with the highest rainfall) are January and December (0.94").
The driest months (with the least rainfall) are July and August (0.2").

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Average rainfall days in September
Warden, WA

Average rainfall days in September - Warden, WA
  • Average rainfall days in September: 4.2 days

The month with the highest number of rainy days is March (13.7 days).
The month with the least rainy days is August (3.4 days).

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Average snowfall in September
Warden, WA

Average snowfall in September - Warden, WA
  • Average snowfall in September: 0.08"

The month with the highest snowfall is February (1.93").
Months with the least snowfall are May, June, July, August and October (0").

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Average snowfall days in September
Warden, WA

Average snowfall days in September - Warden, WA
  • Average snowfall days in September: 0.1 days

The month with the highest number of snowfall days is December (5.5 days).
Months with the least snowfall days are May, June, July, August and October (0 days).

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

Average daylight in September / Average sunshine in September - Warden, WA
  • Average daylight in September: 12.5h

The month with the longest days is June (Average daylight: 15.8h).
The month with the shortest days is December (Average daylight: 8.6h).

  • Average sunshine in September: 10.8h

Months with the most sunshine are July and August (Average sunshine: 12h).
Months with the least sunshine are January and December (Average sunshine: 5.3).

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Average sunshine days in September
Warden, WA

Average sunshine days in September - Warden, WA
  • Average sunshine days in September: 24.4 days

The month with the most sunshine days is July (25.7 days).
The month with the least sunshine days is March (15 days).

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Average UV index in September
Warden, WA

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

The month with the highest UV index is July (UV index 7).
Months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in September
Warden, WA

Average cloud cover in September - Warden, WA
  • Average cloud cover in September: 16

The month with the most cloud cover is January (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 10).

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Average visibility in September
Warden, WA

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

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).

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