September Weather in Quilcene, United States

Last updated: June 24, 2025

In September, the average temperature in Quilcene, United States is a pleasant 14°C (58°F). Expect a range with minimums dipping to 4°C (39°F) and maximums soaring to 28°C (82°F). During this month, you'll likely encounter 114 mm (4.5 in) of precipitation spread over 15 days, contributing to an average humidity of 74%.

September Temperature in Quilcene

In September in Quilcene, the average temperature is 14°C (58°F). The maximum can reach 28°C (82°F) and the minimum can be as low as 4°C (39°F). It's a great time to visit, as you can enjoy mild days and cool nights perfect for exploring.

September Weather in Quilcene: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Quilcene, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Quilcene, September typically has an average temperature of 14°C (58°F), with highs reaching up to 28°C (82°F) and lows dropping to around 4°C (39°F).

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

September Precipitation in Quilcene

In Quilcene in September, the precipitation amount is 114 mm (4.5 in) spread over a duration of 15 days.

September Precipitation Trends in Quilcene

The chart displays monthly precipitation patterns in Quilcene, 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 Quilcene, September typically receives around 114 mm (4.5 inches) of precipitation spread over approximately 15 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Quilcene

In Quilcene in September humidity is 74%. With an average temperature of 14°C (58°F), this humidity feels like a thick blanket wrapping around you, making outdoor activities slightly uncomfortable and prompting travelers to seek shade or indoor venues more often.

September Average Humidity in Quilcene

This chart illustrates the average monthly humidity levels in Quilcene, 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 Quilcene is approximately 74%, 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 Quilcene

In Quilcene 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 Quilcene.

Maximum UV Index Levels in Quilcene for September

The chart shows the monthly maximum UV Index (UVI) for Quilcene 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 Quilcene typically reaches 7, which falls under the high exposure category.

Data source: Quilcene 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 Quilcene Compares to Other Months

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

This table compares monthly weather conditions in Quilcene, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	3°C (38°F)	203 mm (8.0 inches)	86%	low
February Weather	2°C (36°F)	153 mm (6.0 inches)	84%	moderate
March Weather	4°C (39°F)	132 mm (5.2 inches)	85%	moderate
April Weather	7°C (44°F)	118 mm (4.7 inches)	83%	high
May Weather	11°C (52°F)	94 mm (3.7 inches)	84%	very high
June Weather	14°C (57°F)	105 mm (4.1 inches)	84%	very high
July Weather	17°C (63°F)	45 mm (1.8 inches)	82%	very high
August Weather	18°C (64°F)	40 mm (1.6 inches)	73%	very high
September Weather	14°C (58°F)	114 mm (4.5 inches)	74%	high
October Weather	9°C (48°F)	155 mm (6.1 inches)	83%	moderate
November Weather	6°C (42°F)	206 mm (8.1 inches)	86%	moderate
December Weather	3°C (37°F)	207 mm (8.1 inches)	87%	low