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September Weather in Acton Vale, Canada

Last updated: June 18, 2025

In Acton Vale, Canada, the average temperature in September hovers around 15°C (60°F). Expect minimums to dip to -3°C (27°F) and rise to highs of 30°C (87°F). The month also brings about 69 mm (2.7 in) of precipitation, spread across 10 days, with an average humidity level of 78%. Stay prepared for a mix of weather!

September Temperature in Acton Vale

In September in Acton Vale, the average temperature is 15°C (60°F), with maximums reaching 30°C (87°F) and minimums dropping as low as -3°C (27°F). Be prepared for a wide range of temperatures when planning your travels.

September Weather in Acton Vale: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Acton Vale, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Acton Vale, 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 -3°C (27°F).
JanFebMarAprMayJunJulAugSepOctNovDec171928425664706860493423
Data source: Temperature data for Acton Vale 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 Acton Vale

In Acton Vale in September, the precipitation amount is 69 mm (2.7 in) spread over a period of 10 days.

September Precipitation Trends in Acton Vale

The chart displays monthly precipitation patterns in Acton Vale, 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 Acton Vale, September typically receives around 69 mm (2.7 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec8883841171021241061186913511787
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Acton Vale

In Acton Vale in September, humidity is 78%. With an average temperature of 15°C (60°F), this humidity feels like a warm, damp embrace that can make outdoor activities a bit uncomfortable, highlighting the importance of staying hydrated and taking breaks in the shade while exploring.

September Average Humidity in Acton Vale

This chart illustrates the average monthly humidity levels in Acton Vale, 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 Acton Vale is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%92%86%85%80%74%76%75%78%86%89%89%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Acton Vale

In Acton Vale 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 Acton Vale.

Maximum UV Index Levels in Acton Vale for September

The chart shows the monthly maximum UV Index (UVI) for Acton Vale 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 Acton Vale typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec245799887532
Data source: Acton Vale 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 Acton Vale Compares to Other Months

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

This table compares monthly weather conditions in Acton Vale, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-8°C (17°F)88 mm (3.5 inches)93%low
February Weather-7°C (20°F)83 mm (3.3 inches)92%moderate
March Weather-2°C (28°F)84 mm (3.3 inches)86%moderate
April Weather6°C (43°F)117 mm (4.6 inches)85%high
May Weather13°C (56°F)102 mm (4.0 inches)80%very high
June Weather18°C (65°F)124 mm (4.9 inches)74%very high
July Weather21°C (70°F)106 mm (4.2 inches)76%very high
August Weather20°C (68°F)118 mm (4.6 inches)75%very high
September Weather15°C (60°F)69 mm (2.7 inches)78%high
October Weather9°C (49°F)135 mm (5.3 inches)86%moderate
November Weather1°C (34°F)117 mm (4.6 inches)88%moderate
December Weather-5°C (23°F)87 mm (3.4 inches)89%low

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