September Weather in Chewelah, United States

Last updated: June 24, 2025

In Chewelah, United States, the average temperature in September hovers around 15°C (60°F), but you can experience a range from a chilly 0°C (33°F) to a warm 33°C (92°F). Expect about 37 mm (1.5 in) of precipitation over 6 days, with an average humidity of 74%. Perfect for those who enjoy mild weather with a touch of moisture!

September Temperature in Chewelah

In September in Chewelah, the average temperature is 15°C (60°F). The maximum can reach 33°C (92°F), while the minimum can drop as low as 0°C (33°F). It's a great time for travelers to experience a range of temperatures, so be sure to pack accordingly!

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

The chart illustrates September temperature patterns in Chewelah, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Chewelah, September typically has an average temperature of 15°C (60°F), with highs reaching up to 33°C (92°F) and lows dropping to around 0°C (33°F).

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

September Precipitation in Chewelah

In Chewelah in September, the precipitation amount is 37 mm (1.5 in) over the course of 6 days.

September Precipitation Trends in Chewelah

The chart displays monthly precipitation patterns in Chewelah, 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 Chewelah, September typically receives around 37 mm (1.5 inches) of precipitation spread over approximately 6 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 Chewelah

In Chewelah in September humidity is 74%. With an average temperature of 15°C (60°F), this humidity feels like a warm embrace that can make outdoor activities feel slightly stifling, so travelers should be prepared to hydrate frequently and take breaks in the shade.

September Average Humidity in Chewelah

This chart illustrates the average monthly humidity levels in Chewelah, 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 Chewelah 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 Chewelah

In Chewelah 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 Chewelah.

Maximum UV Index Levels in Chewelah for September

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

Data source: Chewelah 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 Chewelah Compares to Other Months

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

This table compares monthly weather conditions in Chewelah, 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 (28°F)	84 mm (3.3 inches)	90%	low
February Weather	-3°C (27°F)	62 mm (2.5 inches)	91%	moderate
March Weather	2°C (37°F)	64 mm (2.5 inches)	89%	moderate
April Weather	7°C (45°F)	65 mm (2.6 inches)	85%	high
May Weather	13°C (56°F)	58 mm (2.3 inches)	82%	very high
June Weather	18°C (64°F)	33 mm (1.3 inches)	81%	very high
July Weather	22°C (73°F)	7 mm (0.3 inches)	84%	very high
August Weather	22°C (71°F)	21 mm (0.8 inches)	75%	very high
September Weather	15°C (60°F)	37 mm (1.5 inches)	74%	high
October Weather	7°C (45°F)	59 mm (2.3 inches)	85%	moderate
November Weather	2°C (35°F)	71 mm (2.8 inches)	88%	moderate
December Weather	-2°C (29°F)	80 mm (3.1 inches)	93%	low