September Weather in North Creek, United States

Last updated: June 24, 2025

In September, the average temperature in North Creek, United States hovers around 15°C (60°F). Expect a minimum of -2°C (29°F) and a peak of 31°C (88°F), providing a diverse range of weather experiences. Throughout the month, the area receives approximately 73 mm (2.9 in) of rainfall over 8 days, and the average humidity sits at a comfortable 72%.

September Temperature in North Creek

In September in North Creek, the average temperature is 15°C (60°F), with maximums reaching 31°C (88°F) and minimums dipping as low as -2°C (29°F). This varied climate makes it essential for travelers to pack layers and be prepared for both warm days and chilly nights.

September Weather in North Creek: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in North Creek, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In North Creek, September typically has an average temperature of 15°C (60°F), with highs reaching up to 31°C (88°F) and lows dropping to around -2°C (29°F).

Data source: Temperature data for North Creek generated using information from the Copernicus Climate Change Service.

September Precipitation in North Creek

In North Creek in September, the precipitation amount is 73 mm (2.9 in) over a span of 8 days.

September Precipitation Trends in North Creek

The chart displays monthly precipitation patterns in North Creek, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In North Creek, September typically receives around 73 mm (2.9 inches) of precipitation spread over approximately 8 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

September Humidity in North Creek

In North Creek in September humidity is 72%. With an average temperature of 15°C (60°F), this humidity feels like a warm embrace, creating a slightly muggy atmosphere that can make strolling around a bit sticky. Travelers might find themselves longing for a refreshing breeze, and it’s advisable to stay hydrated while exploring local sights.

September Average Humidity in North Creek

This chart illustrates the average monthly humidity levels in North Creek, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in North Creek is approximately 72%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in North Creek

In North Creek in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in North Creek.

Maximum UV Index Levels in North Creek for September

The chart shows the monthly maximum UV Index (UVI) for North Creek in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in North Creek typically reaches 7, which falls under the high exposure category.

Data source: North Creek September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How September Weather in North Creek Compares to Other Months

Weather in North Creek varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in North Creek, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in North Creek, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-7°C (19°F)	82 mm (3.2 inches)	89%	moderate
February Weather	-6°C (22°F)	86 mm (3.4 inches)	88%	moderate
March Weather	-2°C (29°F)	71 mm (2.8 inches)	86%	high
April Weather	5°C (42°F)	123 mm (4.8 inches)	84%	very high
May Weather	13°C (55°F)	100 mm (3.9 inches)	76%	very high
June Weather	17°C (64°F)	102 mm (4.0 inches)	72%	very high
July Weather	21°C (69°F)	128 mm (5.1 inches)	66%	very high
August Weather	19°C (67°F)	107 mm (4.2 inches)	64%	very high
September Weather	15°C (60°F)	73 mm (2.9 inches)	72%	high
October Weather	9°C (48°F)	151 mm (5.9 inches)	81%	moderate
November Weather	1°C (33°F)	106 mm (4.2 inches)	87%	moderate
December Weather	-4°C (24°F)	93 mm (3.7 inches)	84%	low