September weather forecast
Goose Prairie, WA

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Weather in September

September, the first month of the autumn in Goose Prairie, is still a comfortable month, with temperature in the range of an average low of 40.5°F (4.7°C) and an average high of 63.9°F (17.7°C).

Temperature

September involves a decrease in temperature, down from a moderately hot 74.1°F (23.4°C) in August to a comfortable 63.9°F (17.7°C). In Goose Prairie, the average temperature during the nights of September marks a significant drop from the daily high, settling at an icy 40.5°F (4.7°C).

Humidity

The average relative humidity in September is 70%.

Rainfall

In September, the rain falls for 9.5 days. Throughout September, 1.26" (32mm) of precipitation is accumulated. Throughout the year, in Goose Prairie, there are 96.1 rainfall days, and 36.54" (928mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through July, September through December. September is the first month it typically snows in Goose Prairie. Throughout September, in the average 2 snowfall days, it receives 1.14" (29mm) of snow. Throughout the year, there are 147 snowfall days, and 210.2" (5339mm) of snow is accumulated.

Daylight

In September, the average length of the day is 12h and 32min.
On the first day of the month, sunrise is at 6:25 am and sunset at 7:43 pm. On the last day of September, sunrise is at 7:03 am and sunset at 6:45 pm PDT.

Sunshine

The average sunshine in September is 9.7h.

UV index

In Goose Prairie, the average daily maximum UV index in September is 3. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: The maximum UV index of 3 during September translates into these guidelines:
Exercise care. People with light skin might get burns in fewer than 30 minutes. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
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Frequently asked questions

What are September temperatures in Goose Prairie?

An average high-temperature, in September, in Goose Prairie, is 63.9°F (17.7°C) and the average low-temperature is 40.5°F (4.7°C).

What is the average humidity in September in Goose Prairie?

In Goose Prairie, Washington, the average relative humidity in September is 70%.

How many days does it rain in September in Goose Prairie?

In Goose Prairie, during September, the rain falls for 9.5 days and regularly aggregates up to 1.26" (32mm) of precipitation.

When does it start snowing in Goose Prairie?

September is the first month it typically snows in Goose Prairie, Washington. Throughout September, in the average 2 snowfall days, it receives 1.14" (29mm) of snow.

How many hours of daylight does Goose Prairie have in September?

In Goose Prairie, Washington, the average day length in September is 12h and 32min.

When are sunrise and sunset in September in Goose Prairie?

On the first day of September, sunrise is at 6:25 am and sunset at 7:43 pm. On the last day of the month, sunrise is at 7:03 am and sunset at 6:45 pm PDT.

How long on average sun shines in September in Goose Prairie?

The average sunshine duration in September in Goose Prairie, Washington, is 9.7h.

What is the UV index intensity in September in Goose Prairie?

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

Average temperature in September
Goose Prairie, WA

Average temperature in September - Goose Prairie, WA
  • Average high temperature in September: 63.9°F

The warmest month (with the highest average high temperature) is August (74.1°F).
The month with the lowest average high temperature is December (30.4°F).

  • Average low temperature in September: 40.5°F

The month with the highest average low temperature is August (45.1°F).
The coldest month (with the lowest average low temperature) is December (18.5°F).

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Average pressure in September
Goose Prairie, WA

Average pressure in September - Goose Prairie, WA
  • Average pressure in September: 29.99"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is August (29.97"Hg).

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Average wind speed in September
Goose Prairie, WA

Average wind speed in September - Goose Prairie, WA
  • Average wind speed in September: 4.3mph

The windiest month (with the highest average wind speed) is January (5.3mph).
The calmest month (with the lowest average wind speed) is September (4.3mph).

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Average humidity in September
Goose Prairie, WA

Average humidity in September - Goose Prairie, WA
  • Average humidity in September: 70%

The month with the highest relative humidity is February (93%).
The months with the lowest relative humidity are July and August (63%).

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Average rainfall in September
Goose Prairie, WA

Average rainfall in September - Goose Prairie, WA
  • Average rainfall in September: 1.26"

The wettest month (with the highest rainfall) is January (6.14").
The driest month (with the least rainfall) is July (0.39").

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Average rainfall days in September
Goose Prairie, WA

Average rainfall days in September - Goose Prairie, WA
  • Average rainfall days in September: 9.5 days

The month with the highest number of rainy days is October (12.6 days).
The month with the least rainy days is February (4.6 days).

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Average snowfall in September
Goose Prairie, WA

Average snowfall in September - Goose Prairie, WA
  • Average snowfall in September: 1.14"

The month with the highest snowfall is January (41.73").
The month with the least snowfall is August (0").

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Average snowfall days in September
Goose Prairie, WA

Average snowfall days in September - Goose Prairie, WA
  • Average snowfall days in September: 2 days

The month with the highest number of snowfall days is March (22.2 days).
The month with the least snowfall days is August (0.3 days).

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Average daylight in September /
Average sunshine in September
Goose Prairie, WA

Average daylight in September / Average sunshine in September - Goose Prairie, WA
  • Average daylight in September: 12h and 3min

The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).

  • Average sunshine in September: 9h and 4min

The month with the most sunshine is August (Average sunshine: 11h and 36min).
The months with the least sunshine are January and February (Average sunshine: 3h and 18min).

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Average sunshine days in September
Goose Prairie, WA

Average sunshine days in September - Goose Prairie, WA
  • Average sunshine days in September: 18.5 days

The month with the most sunshine days is July (23.6 days).
The month with the least sunshine days is February (7.8 days).

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Average UV index in September
Goose Prairie, WA

Average UV index in September - Goose Prairie, WA
  • Average UV index in September: 3

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 1).

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Average cloud cover in September
Goose Prairie, WA

Average cloud cover in September - Goose Prairie, WA
  • Average cloud cover in September: 34

The month with the most cloud cover is February (Cloud cover 68).
The months with the least cloud cover are July and August (Cloud cover 21).

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Average visibility in September
Goose Prairie, WA

Average visibility in September - Goose Prairie, WA
  • Average visibility in September: 6mi

The months with the highest visibility are June, July, August and September (6mi).
The months with the lowest visibility are January, February and December (3mi).

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Goose Prairie, Washington, USA

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