September weather forecast
Davenport, WA

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Weather in September

The first month of the autumn, September, is still a pleasant month in Davenport, Washington, with an average temperature fluctuating between 52.2°F (11.2°C) and 72.5°F (22.5°C).

Temperature

The start of September comes with a reduction in the average high-temperature, receding from a moderately hot 83.3°F (28.5°C) in August to a pleasant 72.5°F (22.5°C). Davenport anticipates an average minimum temperature of 52.2°F (11.2°C) in the month of September.

Humidity

In September, the average relative humidity is 46%.

Rainfall

In September, the rain falls for 7.6 days. Throughout September, 0.59" (15mm) of precipitation is accumulated. Throughout the year, there are 127.9 rainfall days, and 15.71" (399mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, September through December. September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, there are 65.1 snowfall days, and 37.36" (949mm) of snow is accumulated.

Daylight

In Davenport, the average length of the day in September is 12h and 33min.
On the first day of the month, sunrise is at 6:12 am and sunset at 7:32 pm. On the last day of September, in Davenport, sunrise is at 6:51 am and sunset at 6:33 pm PDT.

Sunshine

In Davenport, the average sunshine in September is 10.4h.

UV index

The average daily maximum UV index in September is 4. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: During September, 4 as the daily maximum UV index converts into the following advice:
Exercise prevention - Protecting skin and eyes from harm is required. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.

Frequently asked questions

What is the usual temperature for Davenport in September?

In September, the average high-temperature and low-temperature are 72.5°F (22.5°C) and 52.2°F (11.2°C) respectively.

What is the average humidity in September?

In September, the average relative humidity is 46%.

How much does it rain in September?

In Davenport, in September, it is raining for 7.6 days, with typically 0.59" (15mm) of accumulated precipitation.

When does it start to snow?

September is the first month it typically snows. Throughout September, in the average 0.1 snowfall days, it receives 0.04" (1mm) of snow.

What is the average length of the day in September?

The average day length in September is 12h and 33min.

When is the sunrise / sunset in September?

In September, on the first day of the month, sunrise is at 6:12 am and sunset at 7:32 pm. On the last day of the month, sunrise is at 6:51 am and sunset at 6:33 pm PDT.

How many hours of sunshine does Davenport have in September?

In September, the average sunshine duration is 10.4h.

What is the UV index reading in September?

In Davenport, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate vulnerability 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
Davenport, WA

Average temperature in September - Davenport, WA
  • Average high temperature in September: 72.5°F

The warmest months (with the highest average high temperature) are July and August (83.3°F).
The month with the lowest average high temperature is December (31.5°F).

  • Average low temperature in September: 52.2°F

The month with the highest average low temperature is August (60.3°F).
The coldest month (with the lowest average low temperature) is December (21.9°F).

Average pressure in September
Davenport, WA

Average pressure in September - Davenport, WA
  • Average pressure in September: 29.95"Hg

The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is August (29.9"Hg).

Average wind speed in September
Davenport, WA

Average wind speed in September - Davenport, WA
  • Average wind speed in September: 6.9mph

The windiest months (with the highest average wind speed) are March and April (8.1mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).

Average humidity in September
Davenport, WA

Average humidity in September - Davenport, WA
  • Average humidity in September: 46%

The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (37%).

Average rainfall in September
Davenport, WA

Average rainfall in September - Davenport, WA
  • Average rainfall in September: 0.59"

The wettest month (with the highest rainfall) is March (1.97").
The driest months (with the least rainfall) are July and August (0.31").

Average rainfall days in September
Davenport, WA

Average rainfall days in September - Davenport, WA
  • Average rainfall days in September: 7.6 days

The month with the highest number of rainy days is March (16.3 days).
The month with the least rainy days is August (5.2 days).

Average snowfall in September
Davenport, WA

Average snowfall in September - Davenport, WA
  • Average snowfall in September: 0.04"

The month with the highest snowfall is January (10").
The months with the least snowfall are June, July and August (0").

Average snowfall days in September
Davenport, WA

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

The month with the highest number of snowfall days is December (15.9 days).
The months with the least snowfall days are June, July and August (0 days).

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

Average daylight in September / Average sunshine in September - Davenport, 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: 10h and 2min

The month with the most sunshine is August (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 4h and 6min).

Average sunshine days in September
Davenport, WA

Average sunshine days in September - Davenport, WA
  • Average sunshine days in September: 20.9 days

The month with the most sunshine days is July (23.7 days).
The month with the least sunshine days is March (10.2 days).

Average UV index in September
Davenport, WA

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

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

Average cloud cover in September
Davenport, WA

Average cloud cover in September - Davenport, WA
  • Average cloud cover in September: 19

The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is July (Cloud cover 12).

Average visibility in September
Davenport, WA

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

The months with the highest visibility are March, April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).

Davenport, Washington, USA

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