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Saint-Eustache
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Saint-Eustache
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Weather in Saint-Eustache for September 2026

Your guide to Saint-Eustache weather in September - trends and predictions

    Temperatures

  • Until now, September 2026 in Saint-Eustache is slightly cooler than the historical average by 0.6 °C.

  • Expect cooler weather in the next days in Saint-Eustache with the forecast suggesting a temperature of 19.2 °C, lower than the historical average.

  • In general, the average temperature in Saint-Eustache at the beginning of September is 24.3 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 20 °C by the end of September.

    • Rain 🌧️

  • The climate of Saint-Eustache in September is notably wet, with an average of 12 rainy days, and a total of 128.4 mm of precipitation.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
18
Dry days
Average rainy days
12
Rainy days
Average snowy days
0
Snow days
Average temperatures
22°/11°
Temperatures
Average wind speed
14 km/h
Avg max wind
Average humidity
74 %
Avg humidity

Saint-Eustache Weather September

Move between months or click on a day
August
October
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Mist
24°
2
Patchy rain possible
24°
3
Fog
24°
4
Overcast
26°
5
Mist
25°
6
Mist
24°
7
Light rain shower
23°
8
Light rain shower
20°
9
Partly cloudy
21°
10
Moderate rain
22°
11
Sunny
19°
12
Overcast
24°
13
Overcast
25°
14
Sunny
18°
15
Overcast
18°
16
Overcast
21°
17
Overcast
18°
18
Overcast
17°
19
Sunny
17°
20
Sunny
18°
21
Sunny
21°
22
Overcast
20°
23
Overcast
13°
24
Sunny
20°
25
Sunny
17°
26
Sunny
20°
27
Partly cloudy
20°
28
Overcast
21°
29
Mist
22°
30
Mist
20°

Temperatures trend during September in Saint-Eustache

See the weather trend as well as the moving average line

September weather in Saint-Eustache day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Mist
Mist
 24° /11° 1.7 mm 5
2 Sept. Patchy rain possible
Patchy rain possible
 24° /12° 39.2 mm 5
3 Sept. Fog
Fog
 24° /13° 10 mm 5
4 Sept. Overcast
Overcast
 26° /14° 8.7 mm 6
5 Sept. Mist
Mist
 25° /13° 8.9 mm 6
6 Sept. Mist
Mist
 24° /14° 3.7 mm 6
7 Sept. Light rain shower
Light rain shower
 23° /11° 5.7 mm 5
8 Sept. Light rain shower
Light rain shower
 20° /11° 9.8 mm 4
9 Sept. Partly cloudy
Partly cloudy
 21° /8° 4.8 mm 5
10 Sept. Moderate rain
Moderate rain
 22° /10° 1 mm 6
11 Sept. Sunny
Sunny
 19° /9° 0 mm 5.2
12 Sept. Overcast
Overcast
 24° /10° 0 mm 5.4
13 Sept. Overcast
Overcast
 25° /16° 4.2 mm 3.7
14 Sept. Sunny
Sunny
 18° /10° 0 mm 4.8
15 Sept. Overcast
Overcast
 18° /8° 0.8 mm 4
16 Sept. Overcast
Overcast
 21° /15° 19.8 mm 5
17 Sept. Overcast
Overcast
 18° /14° 0.3 mm 4
18 Sept. Overcast
Overcast
 17° /10° 0 mm 4
19 Sept. Sunny
Sunny
 17° /8° 0 mm 5
20 Sept. Sunny
Sunny
 18° /8° 0 mm 5
21 Sept. Sunny
Sunny
 21° /11° 0 mm 6
22 Sept. Overcast
Overcast
 20° /11° 0 mm 5
23 Sept. Overcast
Overcast
 13° /10° 0.5 mm 4
24 Sept. Sunny
Sunny
 20° /8° 0 mm 5
25 Sept. Sunny
Sunny
 17° /11° 47.3 mm 4
26 Sept. Sunny
Sunny
 20° /10° 34.1 mm 5
27 Sept. Partly cloudy
Partly cloudy
 20° /8° 0 mm 5
28 Sept. Overcast
Overcast
 21° /11° 0 mm 5
29 Sept. Mist
Mist
 22° /10° 0 mm 5
30 Sept. Mist
Mist
 20° /10° 0 mm 5
Next
Important Notice
Our weather forecast for Saint-Eustache in September 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 Saint-Eustache forecast closer to your planned date for the most up-to-date weather information.
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Saint-Eustache in September - FAQ

What are the expected maximum and minimum temperatures in Saint-Eustache during September?
Enjoy moderate daytime temperatures of up to 22° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in Saint-Eustache during September?
Significant rainfall exceeding 128.4 mm is expected in Saint-Eustache during September, occurring over more than 12 days. Preparing for wet conditions is recommended in your planning.

What are the typical wind conditions in Saint-Eustache during September?
The average wind speed in Saint-Eustache during September is 14 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Saint-Eustache

Explore the daily rainfall trends and prepare for Saint-Eustaches September weather 💧
Typically, Saint-Eustache has 12 rainy days in September with a total of 128.4 mm of rainfall.

UV exposure in Saint-Eustache during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

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Location coordinates Where is Saint-Eustache?

Get accurate weather forecasts for Saint-Eustache, located at latitude 45.565 and longitude -73.906. Stay updated with localized weather information tailored for Saint-Eustache.

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