Châteauguay
August
Weather in Châteauguay for August 2026
Your guide to Châteauguay weather in August - trends and predictions
In general, the average temperature in Châteauguay at the beginning of August is 26 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 22.1 °C by the end of August.
Châteauguay in August brings notable rainfall, with an average of 17 rainy days and a total precipitation of 490.9 mm.
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Temperatures
Rain 🌧️
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14
Dry days
17
Rainy days
0
Snow days
28°/13°
Temperatures
16 km/h
Avg max wind
75 %
Avg humidity
Châteauguay Weather August
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Temperatures trend during August in Châteauguay
See the weather trend as well as the moving average line
August weather in Châteauguay day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Aug. |  Patchy rain possible | 24° /15° | 0.9 mm | 6 | |
| 2 Aug. |  Sunny | 28° /14° | 0 mm | 7 | |
| 3 Aug. |  Heavy rain at times | 28° /18° | 7.5 mm | 6 | |
| 4 Aug. |  Moderate or heavy rain shower | 27° /17° | 11.8 mm | 6 | |
| 5 Aug. | Patchy rain possible | 24° /15° | 4.4 mm | 6 | |
| 6 Aug. | Sunny | 26° /14° | 0 mm | 6 | |
| 7 Aug. | Moderate or heavy rain shower | 25° /15° | 11 mm | 6 | |
| 8 Aug. | Moderate or heavy rain shower | 26° /16° | 15.8 mm | 6 | |
| 9 Aug. |  Cloudy | 27° /17° | 28.5 mm | 6 | |
| 10 Aug. | Moderate or heavy rain shower | 28° /19° | 9.4 mm | 6 | |
| 11 Aug. | Patchy rain possible | 27° /17° | 1.6 mm | 6 | |
| 12 Aug. | Moderate or heavy rain shower | 27° /16° | 4 mm | 6 | |
| 13 Aug. | Patchy rain possible | 26° /18° | 3.4 mm | 6 | |
| 14 Aug. |  Overcast | 26° /16° | 0.3 mm | 6 | |
| 15 Aug. | Patchy rain possible | 26° /15° | 1.2 mm | 6 | |
| 16 Aug. | Moderate or heavy rain shower | 29° /17° | 2.3 mm | 7 | |
| 17 Aug. | Moderate rain at times | 25° /16° | 3.2 mm | 5 | |
| 18 Aug. | Moderate or heavy rain shower | 23° /14° | 13.3 mm | 5 | |
| 19 Aug. | Heavy rain at times | 20° /13° | 7.9 mm | 5 | |
| 20 Aug. |  Light rain | 20° /13° | 4.8 mm | 5 | |
| 21 Aug. | Overcast | 21° /14° | 2.9 mm | 5 | |
| 22 Aug. | Patchy rain possible | 23° /14° | 2.4 mm | 5 | |
| 23 Aug. | Overcast | 26° /14° | 1.4 mm | 6 | |
| 24 Aug. | Overcast | 25° /15° | 6 mm | 6 | |
| 25 Aug. | Light drizzle | 22° /15° | 2.3 mm | 5 | |
| 26 Aug. | Light rain shower | 22° /15° | 2.7 mm | 5 | |
| 27 Aug. | Cloudy | 24° /13° | 0 mm | 6 | |
| 28 Aug. |  Mist | 22° /12° | 2.5 mm | 5 | |
| 29 Aug. | Light rain shower | 23° /12° | 7.6 mm | 6 | |
| 30 Aug. | Light rain shower | 20° /11° | 1.8 mm | 5 | |
| 31 Aug. |  Partly cloudy | 22° /11° | 2.8 mm | 5 | |
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Important Notice
Our weather forecast for Châteauguay in August is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Châteauguay forecast closer to your planned date for the most up-to-date weather information.
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Châteauguay in August - FAQ
What are the expected maximum and minimum temperatures in Châteauguay during August?
Enjoy moderate daytime temperatures of up to 28° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Châteauguay during August?
Significant rainfall exceeding 490.9 mm is expected in Châteauguay during August, occurring over more than 17 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Châteauguay during August?
The average wind speed in Châteauguay during August is 16 km/h, suggesting breezy to windy conditions, depending on your activities.
August rainfall patterns in Châteauguay
Explore the daily rainfall trends and prepare for Châteauguays August weather 💧
UV exposure in Châteauguay during August
Stay informed about UV levels for safe outdoor activities throughout the month of August ☀️
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