September Weather in Selah, United States

Last updated: June 24, 2025

The average temperature in Selah, United States during September is a pleasant 17°C (63°F). However, temperatures can vary significantly, with a minimum of 2°C (37°F) and soaring up to a maximum of 36°C (97°F). Expect 17 mm (0.7 in) of precipitation over the course of about 3 days, coupled with an average humidity level of 62%. Whether you're soaking up the sun or dodging the rain, this month in Selah offers a bit of everything!

September Temperature in Selah

In September in Selah, the average temperature is 17°C (63°F). Maximums can reach 36°C (97°F), while minimums can be as low as 2°C (37°F). Overall, this month offers a diverse range of weather conditions, making it essential for travelers to pack accordingly.

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

The chart illustrates September temperature patterns in Selah, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Selah, September typically has an average temperature of 17°C (63°F), with highs reaching up to 36°C (97°F) and lows dropping to around 2°C (37°F).

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

September Precipitation in Selah

In Selah in September, the precipitation amount is 17 mm (0.7 in) over the course of 3 days.

September Precipitation Trends in Selah

The chart displays monthly precipitation patterns in Selah, 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 Selah, September typically receives around 17 mm (0.7 inches) of precipitation spread over approximately 3 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 Selah

In Selah in September humidity is 62%. With an average temperature of 17°C (63°F), this humidity feels like a refreshing embrace, making it pleasant for traveling as long as you stay hydrated and take breaks in the shade.

September Average Humidity in Selah

This chart illustrates the average monthly humidity levels in Selah, 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 Selah is approximately 62%, 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 Selah

In Selah in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Selah.

Maximum UV Index Levels in Selah for September

The chart shows the monthly maximum UV Index (UVI) for Selah 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 Selah typically reaches 8, which falls under the very high exposure category.

Data source: Selah 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 Selah Compares to Other Months

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

This table compares monthly weather conditions in Selah, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-1°C (30°F)	65 mm (2.5 inches)	86%	low
February Weather	0°C (32°F)	66 mm (2.6 inches)	86%	moderate
March Weather	4°C (40°F)	36 mm (1.4 inches)	87%	moderate
April Weather	9°C (49°F)	27 mm (1.1 inches)	84%	high
May Weather	15°C (59°F)	16 mm (0.6 inches)	81%	very high
June Weather	19°C (66°F)	9 mm (0.4 inches)	82%	very high
July Weather	23°C (73°F)	1 mm (0.0 inches)	79%	very high
August Weather	23°C (73°F)	5 mm (0.2 inches)	63%	very high
September Weather	17°C (63°F)	17 mm (0.7 inches)	62%	very high
October Weather	9°C (49°F)	42 mm (1.6 inches)	83%	moderate
November Weather	3°C (38°F)	49 mm (1.9 inches)	89%	moderate
December Weather	0°C (32°F)	60 mm (2.4 inches)	88%	low