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September Weather in Stanley, United States

Last updated: June 24, 2025

In Stanley, United States, the average temperature in September hovers around 17°C (62°F). You might experience a minimum of 1°C (34°F), while the mercury can peak at a warm 33°C (91°F). Expect about 94 mm (3.7 in) of precipitation spread over 10 days, and humidity often reaches 80%, making for a wonderfully lush atmosphere!

September Temperature in Stanley

In September in Stanley, the average temperature is 17°C (62°F). The maximum can reach 33°C (91°F), while the minimum can be as low as 1°C (34°F). This makes Stanley a great destination for travelers looking to experience diverse weather conditions during their trip.

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 17°C (62°F), with highs reaching up to 33°C (91°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec161732435868726862473223
Data source: Temperature data for Stanley generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Stanley

In Stanley in September, the precipitation amount is 94 mm (3.7 in) over a duration of 10 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 94 mm (3.7 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec33515494125127127126941235154
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Stanley

In Stanley in September, humidity is 80%. With an average temperature of 17°C (62°F), this humidity feels like a heavy blanket wrapping around you, making travel sticky and uncomfortable, and often leaving you longing for a refreshing breeze.

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 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%89%86%85%79%80%80%78%80%84%89%85%
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.
JanFebMarAprMayJunJulAugSepOctNovDec2457910997532
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.
 TemperaturePrecipitationHumidityUV
January Weather-9°C (17°F)33 mm (1.3 inches)88%low
February Weather-8°C (17°F)51 mm (2.0 inches)89%moderate
March Weather0°C (32°F)54 mm (2.1 inches)86%moderate
April Weather6°C (43°F)94 mm (3.7 inches)85%high
May Weather14°C (58°F)125 mm (4.9 inches)79%very high
June Weather20°C (69°F)127 mm (5.0 inches)80%very high
July Weather22°C (72°F)127 mm (5.0 inches)80%very high
August Weather20°C (68°F)125 mm (4.9 inches)78%very high
September Weather17°C (62°F)94 mm (3.7 inches)80%high
October Weather9°C (48°F)123 mm (4.8 inches)84%moderate
November Weather0°C (33°F)51 mm (2.0 inches)89%moderate
December Weather-5°C (23°F)54 mm (2.1 inches)85%low

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