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September Weather in Saint-Leonard-d'Aston, Canada

Last updated: June 18, 2025

In September, the average temperature in Saint-Leonard-d'Aston, Canada is a pleasant 15°C (60°F). Expect a range from a chilly -2°C (28°F) to a warm 30°C (87°F). You'll experience about 73 mm (2.9 in) of precipitation over 10 days, with an average humidity of 77%. Perfect for those who enjoy a bit of variety in their weather!

September Temperature in Saint-Leonard-d'Aston

In September in Saint-Leonard-d'Aston, the average temperature is 15°C (60°F). The maximum can reach 30°C (87°F) and the minimum can be as low as -2°C (28°F). This variation makes it essential for travelers to pack layers to adapt to changing temperatures throughout the day.

September Weather in Saint-Leonard-d'Aston: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Saint-Leonard-d'Aston, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saint-Leonard-d'Aston, September typically has an average temperature of 15°C (60°F), with highs reaching up to 30°C (87°F) and lows dropping to around -2°C (28°F).
JanFebMarAprMayJunJulAugSepOctNovDec161927425564706860493322
Data source: Temperature data for Saint-Leonard-d'Aston 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 Saint-Leonard-d'Aston

In Saint-Leonard-d'Aston in September, the precipitation amount is 73 mm (2.9 in) over the course of 10 days.

September Precipitation Trends in Saint-Leonard-d'Aston

The chart displays monthly precipitation patterns in Saint-Leonard-d'Aston, 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 Saint-Leonard-d'Aston, September typically receives around 73 mm (2.9 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec8883871171051251101217313311992
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Saint-Leonard-d'Aston

In Saint-Leonard-d'Aston in September, humidity is 77%. With an average temperature of 15°C (60°F), this humidity feels like you're wading through a warm, heavy blanket, making travel feel more exhausting and sticky than usual.

September Average Humidity in Saint-Leonard-d'Aston

This chart illustrates the average monthly humidity levels in Saint-Leonard-d'Aston, 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 Saint-Leonard-d'Aston is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%85%84%78%72%75%74%77%85%86%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Saint-Leonard-d'Aston

In Saint-Leonard-d'Aston 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 Saint-Leonard-d'Aston.

Maximum UV Index Levels in Saint-Leonard-d'Aston for September

The chart shows the monthly maximum UV Index (UVI) for Saint-Leonard-d'Aston 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 Saint-Leonard-d'Aston typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235799887532
Data source: Saint-Leonard-d'Aston 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 Saint-Leonard-d'Aston Compares to Other Months

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

This table compares monthly weather conditions in Saint-Leonard-d'Aston, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-9°C (17°F)88 mm (3.5 inches)91%low
February Weather-7°C (19°F)83 mm (3.3 inches)89%moderate
March Weather-3°C (28°F)87 mm (3.4 inches)85%moderate
April Weather6°C (42°F)117 mm (4.6 inches)84%high
May Weather13°C (56°F)105 mm (4.1 inches)78%very high
June Weather18°C (65°F)125 mm (4.9 inches)72%very high
July Weather21°C (70°F)110 mm (4.3 inches)75%very high
August Weather20°C (68°F)120 mm (4.7 inches)74%very high
September Weather15°C (60°F)73 mm (2.9 inches)77%high
October Weather9°C (49°F)133 mm (5.2 inches)85%moderate
November Weather1°C (34°F)119 mm (4.7 inches)86%moderate
December Weather-5°C (23°F)92 mm (3.6 inches)85%low

Compare Saint-Leonard-d'Aston's Climate with Cities Worldwide