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October Weather in Chateauguay, Canada

Last updated: June 18, 2025

In Chateauguay, Canada, the average temperature in October hovers around 10°C (51°F). While you might experience a brisk minimum of -3°C (26°F), the weather can pleasantly peak at a warm 25°C (77°F). This month also brings about 132 mm (5.2 in) of precipitation spread across 13 days, coupled with an average humidity level of a balmy 86%. Be prepared for a mix of chilly and mild days!

October Temperature in Chateauguay

In October in Chateauguay, the average temperature is 10°C (51°F). The maximum can reach 25°C (77°F), and the minimum can be as low as -3°C (26°F). This variation makes it a great time to explore Chateauguay, so be sure to pack layers for your trip!

October Weather in Chateauguay: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Chateauguay, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Chateauguay, October typically has an average temperature of 10°C (51°F), with highs reaching up to 25°C (77°F) and lows dropping to around -3°C (26°F).
JanFebMarAprMayJunJulAugSepOctNovDec172028425666727062513624
Data source: Temperature data for Chateauguay 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.

October Precipitation in Chateauguay

In Chateauguay in October, the precipitation amount is 132 mm (5.2 in) over the course of 13 days.

October Precipitation Trends in Chateauguay

The chart displays monthly precipitation patterns in Chateauguay, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Chateauguay, October typically receives around 132 mm (5.2 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec848585120969789996913211589
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Chateauguay

In Chateauguay in October humidity is 86%. With an average temperature of 10°C (51°F), this humidity feels like a cool, damp blanket enveloping you, making traveling feel invigorating yet slightly uncomfortable without the right layers.

October Average Humidity in Chateauguay

This chart illustrates the average monthly humidity levels in Chateauguay, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Chateauguay is approximately 86%, 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 October generated using information from the Copernicus Climate Change Service.

October UV Index in Chateauguay

In Chateauguay in October, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Chateauguay.

Maximum UV Index Levels in Chateauguay for October

The chart shows the monthly maximum UV Index (UVI) for Chateauguay in October, 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 October, the maximum UV index in Chateauguay typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec245799887532
Data source: Chateauguay October 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 October Weather in Chateauguay Compares to Other Months

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

This table compares monthly weather conditions in Chateauguay, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-8°C (18°F)84 mm (3.3 inches)93%low
February Weather-7°C (20°F)85 mm (3.3 inches)92%moderate
March Weather-2°C (29°F)85 mm (3.3 inches)86%moderate
April Weather6°C (42°F)120 mm (4.7 inches)85%high
May Weather13°C (56°F)96 mm (3.8 inches)80%very high
June Weather19°C (67°F)97 mm (3.8 inches)74%very high
July Weather22°C (73°F)89 mm (3.5 inches)76%very high
August Weather21°C (71°F)98 mm (3.9 inches)75%very high
September Weather17°C (62°F)69 mm (2.7 inches)78%high
October Weather10°C (51°F)132 mm (5.2 inches)86%moderate
November Weather2°C (36°F)115 mm (4.5 inches)88%moderate
December Weather-4°C (24°F)89 mm (3.5 inches)89%low

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