September Weather in Yukon, United States

Last updated: June 24, 2025

In September, the average temperature in Yukon, United States hovers around 20°C (68°F). You can expect temperatures to range from a cool 4°C (39°F) to a warm 33°C (92°F). During this month, precipitation totals reach approximately 123 mm (4.9 in) over 9 days, and the average humidity sits at 67%, creating a pleasantly moderate atmosphere.

September Temperature in Yukon

In September in Yukon, the average temperature is 20°C (68°F). Maximum temperatures can reach up to 33°C (92°F), while minimums can drop as low as 4°C (39°F). It's a great time for travelers to enjoy mild weather and plan outdoor activities.

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

The chart illustrates September temperature patterns in Yukon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Yukon, September typically has an average temperature of 20°C (68°F), with highs reaching up to 33°C (92°F) and lows dropping to around 4°C (39°F).

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

September Precipitation in Yukon

In Yukon in September, the precipitation amount is 123 mm (4.9 in) over a period of 9 days.

September Precipitation Trends in Yukon

The chart displays monthly precipitation patterns in Yukon, 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 Yukon, September typically receives around 123 mm (4.9 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 Yukon

In Yukon in September humidity is 67%. With an average temperature of 20°C (68°F), this humidity feels like a warm embrace, making travel comfortable yet slightly sticky, as the air clings to your skin and invites you to enjoy the sights at a leisurely pace.

September Average Humidity in Yukon

This chart illustrates the average monthly humidity levels in Yukon, 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 Yukon is approximately 67%, 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 Yukon

In Yukon 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 Yukon.

Maximum UV Index Levels in Yukon for September

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

Data source: Yukon 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 Yukon Compares to Other Months

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

This table compares monthly weather conditions in Yukon, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	0°C (32°F)	90 mm (3.6 inches)	89%	moderate
February Weather	2°C (36°F)	125 mm (4.9 inches)	90%	moderate
March Weather	6°C (42°F)	114 mm (4.5 inches)	89%	high
April Weather	11°C (52°F)	129 mm (5.1 inches)	88%	very high
May Weather	17°C (63°F)	154 mm (6.1 inches)	80%	very high
June Weather	21°C (70°F)	163 mm (6.4 inches)	79%	very high
July Weather	24°C (75°F)	147 mm (5.8 inches)	74%	very high
August Weather	23°C (73°F)	96 mm (3.8 inches)	64%	very high
September Weather	20°C (68°F)	123 mm (4.9 inches)	67%	very high
October Weather	14°C (58°F)	121 mm (4.8 inches)	81%	high
November Weather	6°C (43°F)	90 mm (3.6 inches)	89%	moderate
December Weather	3°C (37°F)	110 mm (4.3 inches)	88%	low