September weather forecast and climate
Bickleton, WA

Weather in September

September, the first month of the autumn, in Bickleton, is still a warm month, with temperature in the range of an average low of 54.9°F (12.7°C) and an average high of 73.9°F (23.3°C).

Temperature

In September, the average high-temperature decreases, from a warm 84.7°F (29.3°C) in August, to a still moderately hot 73.9°F (23.3°C). In September, in Bickleton, the average low-temperature is 54.9°F (12.7°C).

Humidity

In September, the average relative humidity is 48%.

Rainfall

In Bickleton, during September, the rain falls for 5.5 days and regularly aggregates up to 0.31" (8mm) of precipitation. Throughout the year, in Bickleton, there are 107.9 rainfall days, and 8.46" (215mm) of precipitation is accumulated.

Snowfall

April through October are months without snowfall in Bickleton.

Daylight

The average length of the day in Bickleton is 12.5h.

Sunshine

In Bickleton, the average sunshine is 10.9h.

UV index

In Bickleton, the average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from the exposure to the Sun's UV radiation for the average person.
Note: In September, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against the skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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 Bickleton?

In September, the average relative humidity in Bickleton, Washington, is 48%.

How much does it rain in Bickleton in September?

In September, the rain falls for 5.5 days. Throughout September, 0.31" (8mm) of precipitation is accumulated.

When it does not snow in Bickleton?

In Bickleton, Washington, snow does not fall in April through October.

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

The average length of the day in September in Bickleton, Washington, is 12.5h.

How long on average sun shines in September in Bickleton?

In September, the average sunshine in Bickleton is 10.9h.

How high is the UV index in September in Bickleton?

In September, the average daily maximum UV index in Bickleton, Washington, is 4. A UV Index of 3 to 5 symbolizes a moderate vulnerability from the exposure to the Sun's UV rays.

Average temperature in September
Bickleton, WA

Average temperature in September - Bickleton, WA
  • Average high temperature in September: 73.9°F

The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is December (36.5°F).

  • Average low temperature in September: 54.9°F

The month with the highest average low temperature is August (61.3°F).
The coldest month (with the lowest average low temperature) is December (26.6°F).

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Average pressure in September
Bickleton, WA

Average pressure in September - Bickleton, WA
  • Average pressure in September: 29.97"

The month with the highest atmospheric pressure is January (30.17").
The month with the lowest atmospheric pressure is August (29.93").

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Average wind speed in September
Bickleton, WA

Average wind speed in September - Bickleton, WA
  • Average wind speed in September: 7.5mph

The windiest month (with the highest average wind speed) is June (9.2mph).
The calmest month (with the lowest average wind speed) is January (6.3mph).

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Average humidity in September
Bickleton, WA

Average humidity in September - Bickleton, WA
  • Average humidity in September: 48%

The month with the highest relative humidity is January (83%).
Months with the lowest relative humidity are July and August (40%).

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Average rainfall in September
Bickleton, WA

Average rainfall in September - Bickleton, WA
  • Average rainfall in September: 0.31"

The wettest month (with the highest rainfall) is January (1.1").
The driest month (with the least rainfall) is July (0.24").

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Average rainfall days in September
Bickleton, WA

Average rainfall days in September - Bickleton, WA
  • Average rainfall days in September: 5.5 days

The month with the highest number of rainy days is March (12.3 days).
The month with the least rainy days is July (4.4 days).

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Average snowfall in September
Bickleton, WA

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

The month with the highest snowfall is February (3.86").
Months with the least snowfall are April, May, June, July, August, September and October (0").

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Average snowfall days in September
Bickleton, WA

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

The month with the highest number of snowfall days is December (4.8 days).
Months with the least snowfall days are April, May, June, July, August and October (0 days).

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

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

The month with the longest days is June (Average daylight: 15.7h).
The month with the shortest days is December (Average daylight: 8.7h).

  • Average sunshine in September: 10.9h

Months with the most sunshine are July and August (Average sunshine: 12h).
The month with the least sunshine is January (Average sunshine: 5.2h).

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Average sunshine days in September
Bickleton, WA

Average sunshine days in September - Bickleton, WA
  • Average sunshine days in September: 22.1 days

The month with the most sunshine days is July (25 days).
The month with the least sunshine days is February (14 days).

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Average UV index in September
Bickleton, WA

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

Months with the highest UV index are June and July (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in September
Bickleton, WA

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

The month with the most cloud cover is January (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 9).

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Average visibility in September
Bickleton, WA

Average visibility in September - Bickleton, 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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