September Weather in Stanley, United States

Last updated: June 24, 2025

In September, the average temperature in Stanley, United States is a mild 14°C (58°F), making it a pleasant time to visit. Be prepared for a temperature range that can dip to a chilly -3°C (27°F) at its lowest and soar to a warm 32°C (91°F) at its highest. Visitors may experience an average precipitation of 65 mm (2.6 in) over about 7 days, while the humidity tends to hover around 65%. Enjoy the variety that this month offers!

September Temperature in Stanley

In September, in Stanley, the average temperature is 14°C (58°F), with maximums reaching up to 32°C (91°F) and minimums dropping to as low as -3°C (27°F). It's a good idea to pack layers and prepare for varied weather conditions while traveling during this time.

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

The chart illustrates September temperature patterns in Stanley, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Stanley, September typically has an average temperature of 14°C (58°F), with highs reaching up to 32°C (91°F) and lows dropping to around -3°C (27°F).

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

September Precipitation in Stanley

In Stanley in September, the total precipitation amount is 65 mm (2.6 in) over a span of 7 days.

September Precipitation Trends in Stanley

The chart displays monthly precipitation patterns in Stanley, 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 Stanley, September typically receives around 65 mm (2.6 inches) of precipitation spread over approximately 7 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 Stanley

In Stanley in September, humidity is 65%. With an average temperature of 14°C (58°F), this humidity feels like a mild embrace, creating a slightly damp atmosphere that's comfortable for exploring, but travelers should be prepared for the occasional sticky moment.

September Average Humidity in Stanley

This chart illustrates the average monthly humidity levels in Stanley, 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 Stanley is approximately 65%, 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 Stanley

In Stanley 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 Stanley.

Maximum UV Index Levels in Stanley for September

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

Data source: Stanley 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 Stanley Compares to Other Months

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

This table compares monthly weather conditions in Stanley, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-11°C (12°F)	12 mm (0.5 inches)	89%	low
February Weather	-13°C (9°F)	16 mm (0.6 inches)	92%	moderate
March Weather	-3°C (27°F)	26 mm (1.0 inches)	84%	moderate
April Weather	3°C (37°F)	25 mm (1.0 inches)	74%	very high
May Weather	12°C (54°F)	41 mm (1.6 inches)	73%	very high
June Weather	19°C (66°F)	72 mm (2.8 inches)	69%	very high
July Weather	21°C (70°F)	63 mm (2.5 inches)	76%	very high
August Weather	19°C (67°F)	56 mm (2.2 inches)	74%	very high
September Weather	14°C (58°F)	65 mm (2.6 inches)	65%	high
October Weather	5°C (41°F)	33 mm (1.3 inches)	71%	moderate
November Weather	-2°C (28°F)	21 mm (0.8 inches)	84%	low
December Weather	-8°C (19°F)	19 mm (0.7 inches)	92%	low