September Weather in Trail Creek, United States

Last updated: June 24, 2025

In Trail Creek, United States, the average temperature in September hovers around 20°C (68°F), with the possibility of dipping to a chilly 7°C (45°F) or soaring to a warm 33°C (91°F). Expect about 75 mm (2.9 in) of precipitation spread over 9 days, accompanied by an average humidity of 78%. Prepare accordingly for a variety of weather conditions!

September Temperature in Trail Creek

In September in Trail Creek, the average temperature is 20°C (68°F), with maximums reaching up to 33°C (91°F) and minimums dipping as low as 7°C (45°F). This pleasant climate makes Trail Creek an ideal destination for travel during this time.

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

The chart illustrates September temperature patterns in Trail Creek, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Trail Creek, September typically has an average temperature of 20°C (68°F), with highs reaching up to 33°C (91°F) and lows dropping to around 7°C (45°F).

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

September Precipitation in Trail Creek

In Trail Creek, in September, the precipitation amount is 75 mm (2.9 in) spread over the course of 9 days.

September Precipitation Trends in Trail Creek

The chart displays monthly precipitation patterns in Trail 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 Trail Creek, September typically receives around 75 mm (2.9 inches) of precipitation spread over approximately 9 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 Trail Creek

In Trail Creek in September humidity is 78%. With an average temperature of 20°C (68°F), this humidity feels like a warm, enveloping blanket that makes exploring the sights a bit sticky, so travelers should stay hydrated and take frequent breaks in the shade.

September Average Humidity in Trail Creek

This chart illustrates the average monthly humidity levels in Trail 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 Trail Creek is approximately 78%, 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 Trail Creek

In Trail Creek 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 Trail Creek.

Maximum UV Index Levels in Trail Creek for September

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

Data source: Trail 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 Trail Creek Compares to Other Months

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

This table compares monthly weather conditions in Trail Creek, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-2°C (29°F)	73 mm (2.9 inches)	85%	moderate
February Weather	-2°C (30°F)	73 mm (2.9 inches)	85%	moderate
March Weather	3°C (39°F)	91 mm (3.6 inches)	86%	high
April Weather	8°C (47°F)	105 mm (4.2 inches)	87%	very high
May Weather	15°C (59°F)	161 mm (6.3 inches)	81%	very high
June Weather	21°C (71°F)	133 mm (5.2 inches)	82%	very high
July Weather	24°C (76°F)	100 mm (3.9 inches)	81%	very high
August Weather	23°C (73°F)	99 mm (3.9 inches)	79%	very high
September Weather	20°C (68°F)	75 mm (2.9 inches)	78%	very high
October Weather	13°C (56°F)	139 mm (5.5 inches)	81%	high
November Weather	5°C (42°F)	72 mm (2.8 inches)	89%	moderate
December Weather	2°C (35°F)	63 mm (2.5 inches)	86%	low