easeweather.com
Trois-Rivières
AbbotsfordAjaxAuroraBanffBarrieBoisbriandBouchervilleBramptonBrandonBrantfordBrossardBurlingtonBurnabyCalgaryCambridgeCharlottetownChathamChilliwackCoquitlamCornwallDartmouthDeltaDorvalEdmontonFort McMurrayFrederictonGatineauGranbyGrande PrairieGreater SudburyGuelphHalifaxHamiltonKamloopsKanataKelownaKingstonKitchenerLangleyLavalLethbridgeLindsayLondonMarkhamMiltonMissionMississaugaMonctonMont-RoyalMontréalMoose JawNanaimoNepeanNew GlasgowNewmarketNiagara FallsNorfolk CountyNorth BattlefordNorth BayOakvilleOkanaganOrilliaOshawaOttawaPentictonPeterboroughPickeringPointe-ClairePrince AlbertPrince EdwardPrince GeorgeQuébecRed DeerReginaRichmond HillSaguenaySaint JohnSarniaSaskatoonSault Ste. MarieSherbrookeSt. CatharinesSt. John'sSurreySydneyThunder BayTimminsToronto
Trois-Rivières
VancouverVaughanVictoriaWasaga BeachWaterlooWellandWest VancouverWhistlerWindsorWinnipegWoodstockYellowknife More Locations
Canada weather

Weather in Trois-Rivières for September 2026

Your guide to Trois-Rivières weather in September - trends and predictions

    Temperatures

  • Until now, September 2026 in Trois-Rivières is slightly cooler than the historical average by 1.3 °C.

  • The forecast for the next days in Trois-Rivières predicts a temperature of 14.5 °C, which is cooler than the historical average.

  • In general, the average temperature in Trois-Rivières at the beginning of September is 23.7 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 18.1 °C by the end of September.

    • Rain 🌧️

  • The climate of Trois-Rivières in September is notably wet, with an average of 11 rainy days, and a total of 139.7 mm of precipitation.

    • More

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

Average dry days
19
Dry days
Average rainy days
11
Rainy days
Average snowy days
0
Snow days
Average temperatures
21°/10°
Temperatures
Average wind speed
15 km/h
Avg max wind
Average humidity
77 %
Avg humidity

Trois-Rivières Weather September

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

Temperatures trend during September in Trois-Rivières

See the weather trend as well as the moving average line

September weather in Trois-Rivières day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Partly cloudy
Partly cloudy
 24° /9° 1.3 mm 5
2 Sept. Mist
Mist
 22° /11° 6.2 mm 5
3 Sept. Fog
Fog
 24° /13° 11.6 mm 5
4 Sept. Sunny
Sunny
 26° /13° 0.1 mm 7
5 Sept. Fog
Fog
 23° /14° 6.5 mm 5
6 Sept. Fog
Fog
 24° /13° 4.6 mm 6
7 Sept. Patchy light rain with thunder
Patchy light rain with thunder
 23° /12° 4.7 mm 5
8 Sept. Light rain shower
Light rain shower
 19° /10° 4.8 mm 5
9 Sept. Mist
Mist
 21° /7° 5.3 mm 4
10 Sept. Mist
Mist
 21° /9° 5.9 mm 5
11 Sept. Mist
Mist
 21° /10° 0 mm 5
12 Sept. Overcast
Overcast
 20° /9° 0.1 mm 5
13 Sept. Heavy rain
Heavy rain
 22° /12° 7.2 mm 4
14 Sept. Fog
Fog
 19° /10° 0 mm 4
15 Sept. Overcast
Overcast
 20° /8° 0 mm 5
16 Sept. Overcast
Overcast
 23° /11° 0.2 mm 5
17 Sept. Fog
Fog
 24° /10° 0.2 mm 5
18 Sept. Light rain shower
Light rain shower
 22° /11° 1.8 mm 5
19 Sept. Moderate rain
Moderate rain
 20° /10° 2.2 mm 5
20 Sept. Overcast
Overcast
 18° /8° 0 mm 4
21 Sept. Sunny
Sunny
 19° /6° 0.1 mm 5
22 Sept. Mist
Mist
 19° /6° 1.6 mm 4
23 Sept. Mist
Mist
 20° /8° 0 mm 5
24 Sept. Sunny
Sunny
 20° /9° 0 mm 5
25 Sept. Sunny
Sunny
 17° /8° 33.9 mm 4
26 Sept. Sunny
Sunny
 19° /10° 51.8 mm 4
27 Sept. Overcast
Overcast
 20° /11° 0.7 mm 4
28 Sept. Overcast
Overcast
 13° /10° 1.7 mm 1.4
29 Sept. Overcast
Overcast
 18° /12° 0 mm 3.3
30 Sept. Overcast
Overcast
 20° /10° 0 mm 3.6
Next
Important Notice
Our weather forecast for Trois-Rivières 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 Trois-Rivières forecast closer to your planned date for the most up-to-date weather information.
Change Month
‹
›

Trois-Rivières in September - FAQ

What are the expected maximum and minimum temperatures in Trois-Rivières during September?
Enjoy moderate daytime temperatures of up to 21° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in Trois-Rivières during September?
Significant rainfall exceeding 139.7 mm is expected in Trois-Rivières during September, occurring over more than 11 days. Preparing for wet conditions is recommended in your planning.

What are the typical wind conditions in Trois-Rivières during September?
The average wind speed in Trois-Rivières during September is 15 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Trois-Rivières

Explore the daily rainfall trends and prepare for Trois-Rivièress September weather 💧
Typically, Trois-Rivières has 11 rainy days in September with a total of 139.7 mm of rainfall.

UV exposure in Trois-Rivières during September

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

Quick links

More Trois-Rivières weather pages
You are here
Location coordinates Where is Trois-Rivières?

Get accurate weather forecasts for Trois-Rivières, located at latitude 46.345 and longitude -72.548. Stay updated with localized weather information tailored for Trois-Rivières.

Related locations
Select a location for accurate weather forecast
MontréalQuébec
More Locations
Found a mistake?
We appreciate your attention to details. Tell us here.