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Canada weather

Weather in Rimouski for September 2026

Your guide to Rimouski weather in September - trends and predictions

    Temperatures

  • In general, the average temperature in Rimouski at the beginning of September is 18.7 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 13.4 °C by the end of September.

    • Rain 🌧️

  • Rimouski in September brings notable rainfall, with an average of 16 rainy days and a total precipitation of 89.7 mm.

    • More

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Average dry days
14
Dry days
Average rainy days
16
Rainy days
Average snowy days
0
Snow days
Average temperatures
16°/10°
Temperatures
Average wind speed
18 km/h
Avg max wind
Average humidity
82 %
Avg humidity

Rimouski Weather September

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

Temperatures trend during September in Rimouski

See the weather trend as well as the moving average line

September weather in Rimouski day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Sunny
Sunny
 20° /10° 1.6 mm 5
2 Sept. Cloudy
Cloudy
 18° /11° 0 mm 4
3 Sept. Partly cloudy
Partly cloudy
 17° /12° 0 mm 4
4 Sept. Partly cloudy
Partly cloudy
 20° /12° 0 mm 5
5 Sept. Fog
Fog
 20° /13° 0 mm 5
6 Sept. Fog
Fog
 19° /12° 6.8 mm 5
7 Sept. Fog
Fog
 17° /11° 5.5 mm 4
8 Sept. Light rain shower
Light rain shower
 16° /10° 2.4 mm 4
9 Sept. Fog
Fog
 15° /9° 0.5 mm 4
10 Sept. Overcast
Overcast
 15° /9° 0.2 mm 3
11 Sept. Fog
Fog
 15° /9° 0.4 mm 4
12 Sept. Partly cloudy
Partly cloudy
 16° /9° 0 mm 4
13 Sept. Moderate rain
Moderate rain
 16° /10° 7.6 mm 4
14 Sept. Moderate rain
Moderate rain
 15° /9° 4.1 mm 3
15 Sept. Overcast
Overcast
 16° /9° 0 mm 4
16 Sept. Partly cloudy
Partly cloudy
 18° /11° 5.5 mm 5
17 Sept. Overcast
Overcast
 20° /13° 2.6 mm 5
18 Sept. Light rain shower
Light rain shower
 19° /12° 1.8 mm 4
19 Sept. Moderate rain
Moderate rain
 14° /9° 8.5 mm 3
20 Sept. Patchy rain possible
Patchy rain possible
 14° /7° 1.7 mm 4
21 Sept. Overcast
Overcast
 13° /7° 0 mm 3
22 Sept. Overcast
Overcast
 15° /7° 2.3 mm 3
23 Sept. Light rain
Light rain
 14° /8° 3.3 mm 3
24 Sept. Overcast
Overcast
 13° /7° 0 mm 3
25 Sept. Patchy rain possible
Patchy rain possible
 13° /7° 7.1 mm 3
26 Sept. Mist
Mist
 14° /8° 17.9 mm 3
27 Sept. Partly cloudy
Partly cloudy
 13° /8° 9.6 mm 4
28 Sept. Cloudy
Cloudy
 14° /7° 0 mm 4
29 Sept. Partly cloudy
Partly cloudy
 15° /8° 0 mm 4
30 Sept. Mist
Mist
 12° /7° 0 mm 3
Next
Important Notice
Our weather forecast for Rimouski 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 Rimouski forecast closer to your planned date for the most up-to-date weather information.
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Rimouski in September - FAQ

What are the expected maximum and minimum temperatures in Rimouski during September?

Enjoy moderate daytime temperatures of up to 16° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in Rimouski during September?

Moderate rainfall is anticipated in Rimouski during September, with a total of 89.7 mm spread over approximately 16 days. Considering plans for rainy days is advisable.

What are the typical wind conditions in Rimouski during September?

The average wind speed in Rimouski during September is 18 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Rimouski

Explore the daily rainfall trends and prepare for Rimouskis September weather 💧
Typically, Rimouski has 16 rainy days in September with a total of 89.7 mm of rainfall.

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Location coordinates Where is Rimouski?

Get accurate weather forecasts for Rimouski, located at latitude 48.449 and longitude -68.524. Stay updated with localized weather information tailored for Rimouski.

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