September weather forecast
North Bend, WA

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A panorama of the Snoqualmie River with homes, green trees on either side, and a far view of the Preacher Mountain ranges in North Bend, Washington
A panorama of the Snoqualmie River with homes, green trees on either side, and a far view of the Preacher Mountain ranges in North Bend, Washington

Weather in September

September, the first month of the autumn in North Bend, is still a comfortable month, with an average temperature fluctuating between 67.1°F (19.5°C) and 45.1°F (7.3°C).

Temperature

September's arrival coincides with a soft drop in the average high-temperature, subtly decreasing from August's moderately hot 73.9°F (23.3°C) to a comfortable 67.1°F (19.5°C). Throughout September nights, a significant departure from daytime temperatures, with an average low of 45.1°F (7.3°C), is recognized.

Humidity

In North Bend, the average relative humidity in September is 76%.

Rainfall

In North Bend, in September, it is raining for 12.9 days, with typically 1.89" (48mm) of accumulated precipitation. In North Bend, during the entire year, the rain falls for 187.4 days and collects up to 42.64" (1083mm) of precipitation.

Snowfall

In North Bend, snow does not fall in May through October.

Daylight

In September, the average length of the day is 12h and 32min.
On the first day of the month, sunrise is at 6:27 am and sunset at 7:46 pm. On the last day of September, sunrise is at 7:05 am and sunset at 6:47 pm PDT.

Sunshine

In North Bend, the average sunshine in September is 8.8h.

UV index

The average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to UV radiation for ordinary individuals.
Note: In September, the maximum UV index of 3 suggests this advice:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. Around midday, solar radiation is most harmful; hence, exposure should be limited. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Updated: Jul 27, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are September temperatures in North Bend?

The average high-temperature and low-temperature during September are 67.1°F (19.5°C) and 45.1°F (7.3°C) respectively.

What is the average humidity in September?

In North Bend, the average relative humidity in September is 76%.

How many days does it rain in September in North Bend?

In North Bend, in September, during 12.9 rainfall days, 1.89" (48mm) of precipitation is typically accumulated.

When it does not snow?

May through October are months without snowfall.

What is the average length of the day in September?

In North Bend, the average day length in September is 12h and 32min.

When is the sunrise / sunset in September?

In September, on the first day of the month, sunrise is at 6:27 am and sunset at 7:46 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 6:47 pm PDT.

How many hours of sunshine does North Bend have in September?

In North Bend, the average sunshine duration in September is 8.8h.

How high is the UV index in September?

The average daily maximum UV index in September is 3. A UV Index value of 3 to 5 symbolizes a moderate health threat 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
North Bend, WA

Average temperature in September - North Bend, WA
  • Average high temperature in September: 67.1°F

The warmest month (with the highest average high temperature) is August (73.9°F).
The month with the lowest average high temperature is December (39°F).

  • Average low temperature in September: 45.1°F

The month with the highest average low temperature is August (47.8°F).
The coldest month (with the lowest average low temperature) is December (28.9°F).

Average pressure in September
North Bend, WA

Average pressure in September - North Bend, WA
  • Average pressure in September: 30"Hg

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is August (29.99"Hg).

Average wind speed in September
North Bend, WA

Average wind speed in September - North Bend, WA
  • Average wind speed in September: 3.4mph

The windiest month (with the highest average wind speed) is January (5.1mph).
The calmest month (with the lowest average wind speed) is August (3.3mph).

Average humidity in September
North Bend, WA

Average humidity in September - North Bend, WA
  • Average humidity in September: 76%

The month with the highest relative humidity is February (88%).
The month with the lowest relative humidity is July (71%).

Average rainfall in September
North Bend, WA

Average rainfall in September - North Bend, WA
  • Average rainfall in September: 1.89"

The wettest month (with the highest rainfall) is January (6.57").
The driest month (with the least rainfall) is July (0.59").

Average rainfall days in September
North Bend, WA

Average rainfall days in September - North Bend, WA
  • Average rainfall days in September: 12.9 days

The month with the highest number of rainy days is March (20.9 days).
The month with the least rainy days is August (7 days).

Average snowfall in September
North Bend, WA

Average snowfall in September - North Bend, WA
  • Average snowfall in September: 0"

The month with the highest snowfall is February (5.04").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in September
North Bend, WA

Average snowfall days in September - North Bend, WA
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (5.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in September /
Average sunshine in September
North Bend, WA

Average daylight in September / Average sunshine in September - North Bend, 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: 8h and 5min

The month with the most sunshine is August (Average sunshine: 10h and 30min).
The months with the least sunshine are January and December (Average sunshine: 3h and 48min).

Average sunshine days in September
North Bend, WA

Average sunshine days in September - North Bend, WA
  • Average sunshine days in September: 15.9 days

The month with the most sunshine days is August (21.4 days).
The month with the least sunshine days is February (7.6 days).

Average UV index in September
North Bend, WA

Average UV index in September - North Bend, 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 February and November (UV index 1).

Average cloud cover in September
North Bend, WA

Average cloud cover in September - North Bend, WA
  • Average cloud cover in September: 41

The month with the most cloud cover is March (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 30).

Average visibility in September
North Bend, WA

Average visibility in September - North Bend, WA
  • Average visibility in September: 5mi

The months with the highest visibility are May, June, July, August, September and October (5mi).
The months with the lowest visibility are January, February, March, April, November and December (4mi).

North Bend, Washington, USA

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