September weather forecast
Burlington, WA

Weather in September

September, the first month of the autumn in Burlington, is also an enjoyable month, with an average temperature ranging between max 64°F (17.8°C) and min 51.4°F (10.8°C).

Temperature

In Burlington, Washington, the average high-temperature in September is relatively the same as in August - a comfortable 64°F (17.8°C). In September, in Burlington, the average low-temperature is 51.4°F (10.8°C).

Humidity

The average relative humidity in September is 79%.

Rainfall

In Burlington, it is raining for 12.1 days, with typically 2.24" (57mm) of accumulated precipitation. Throughout the year, there are 185.2 rainfall days, and 34.72" (882mm) of precipitation is accumulated.

Snowfall

May through October are months without snowfall in Burlington.

Daylight

In September, the average length of the day is 12h and 34min.
On the first day of the month, sunrise is at 6:26 am and sunset at 7:51 pm. On the last day of September, in Burlington, sunrise is at 7:07 am and sunset at 6:51 pm PDT.

Sunshine

The average sunshine in September is 9h.

UV index

In Burlington, Washington, the average daily maximum UV index in September is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 4 in September interpret into the following advice:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the temperature in September in Burlington?

The average high-temperature, in September, is 64°F (17.8°C), while the average low-temperature is 51.4°F (10.8°C).

What is the average humidity in September in Burlington?

The average relative humidity in September in Burlington, Washington, is 79%.

How many days does it rain in September in Burlington?

In Burlington, Washington, in September, during 12.1 rainfall days, 2.24" (57mm) of precipitation is typically accumulated.

When it does not snow in Burlington?

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

How many hours of daylight does Burlington have in September?

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

When are sunrise and sunset in September in Burlington?

On the first day of September in Burlington, Washington, sunrise is at 6:26 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 Burlington have in September?

The average sunshine duration in September in Burlington is 9h.

How high is the UV index in September in Burlington?

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

Average temperature in September - Burlington, WA
  • Average high temperature in September: 64°F

The warmest months (with the highest average high temperature) are July and August (68.4°F).
The month with the lowest average high temperature is December (42.6°F).

  • Average low temperature in September: 51.4°F

The month with the highest average low temperature is August (54.1°F).
The coldest month (with the lowest average low temperature) is February (36.1°F).

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Average pressure in September
Burlington, WA

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

The month with the highest atmospheric pressure is January (30.09"Hg).
The months with the lowest atmospheric pressure are March, August and September (30.01"Hg).

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Average wind speed in September
Burlington, WA

Average wind speed in September - Burlington, WA
  • Average wind speed in September: 4.5mph

The windiest month (with the highest average wind speed) is November (7.5mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).

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Average humidity in September
Burlington, WA

Average humidity in September - Burlington, WA
  • Average humidity in September: 79%

The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is July (75%).

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Average rainfall in September
Burlington, WA

Average rainfall in September - Burlington, WA
  • Average rainfall in September: 2.24"

The wettest month (with the highest rainfall) is November (4.96").
The driest month (with the least rainfall) is July (0.63").

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Average rainfall days in September
Burlington, WA

Average rainfall days in September - Burlington, WA
  • Average rainfall days in September: 12.1 days

The month with the highest number of rainy days is March (20.8 days).
The month with the least rainy days is August (7.2 days).

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Average snowfall in September
Burlington, WA

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

The month with the highest snowfall is February (3.54").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in September
Burlington, WA

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

The month with the highest number of snowfall days is February (3.6 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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

Average daylight in September / Average sunshine in September - Burlington, WA
  • Average daylight in September: 12h and 4min

The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).

  • Average sunshine in September: 9h and 0min

The months with the most sunshine are July and August (Average sunshine: 10h and 24min).
The month with the least sunshine is December (Average sunshine: 3h and 54min).

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Average sunshine days in September
Burlington, WA

Average sunshine days in September - Burlington, WA
  • Average sunshine days in September: 16.3 days

The month with the most sunshine days is August (22.3 days).
The month with the least sunshine days is November (8.1 days).

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Average UV index in September
Burlington, WA

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

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Average cloud cover in September
Burlington, WA

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

The month with the most cloud cover is December (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 26).

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Average visibility in September
Burlington, WA

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

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

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