Weather in Montérégie for September 2026
Until now, September 2026 in Montérégie has been nearly identical to the historical average, with a temperature of 24.1 °C (showing only a slight deviation of 0 °C).
Expect cooler weather in the next days in Montérégie with the forecast suggesting a temperature of 20 °C, lower than the historical average.
In general, the average temperature in Montérégie at the beginning of September is 24.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 20.4 °C by the end of September.
The climate of Montérégie in September is notably wet, with an average of 13 rainy days, and a total of 175.1 mm of precipitation.
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Montérégie Weather September
Temperatures trend during September in Montérégie
September weather in Montérégie day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. |  Mist | 25° /11° | 0.9 mm | 5 | |
| 2 Sept. |  Patchy rain possible | 24° /12° | 28 mm | 5 | |
| 3 Sept. | Fog | 25° /14° | 36.7 mm | 6 | |
| 4 Sept. |  Partly cloudy | 26° /14° | 5.2 mm | 7 | |
| 5 Sept. | Fog | 25° /14° | 11.6 mm | 5 | |
| 6 Sept. | Fog | 25° /14° | 12.1 mm | 6 | |
| 7 Sept. | Light rain shower | 24° /12° | 4.3 mm | 6 | |
| 8 Sept. | Light rain shower | 21° /11° | 14.8 mm | 4 | |
| 9 Sept. |  Overcast | 22° /9° | 5.1 mm | 4 | |
| 10 Sept. | Light rain shower | 22° /10° | 6.3 mm | 4 | |
| 11 Sept. |  Sunny | 22° /10° | 0 mm | 5.2 | |
| 12 Sept. | Overcast | 24° /12° | 0 mm | 5.2 | |
| 13 Sept. | Overcast | 25° /17° | 5.1 mm | 3.4 | |
| 14 Sept. | Sunny | 19° /12° | 0 mm | 4.9 | |
| 15 Sept. | Overcast | 19° /9° | 0 mm | 4 | |
| 16 Sept. | Overcast | 22° /16° | 5.2 mm | 5 | |
| 17 Sept. | Overcast | 19° /14° | 3.1 mm | 4 | |
| 18 Sept. | Patchy rain possible | 17° /13° | 0.2 mm | 5 | |
| 19 Sept. | Sunny | 19° /11° | 0 mm | 5 | |
| 20 Sept. | Sunny | 18° /9° | 0 mm | 5 | |
| 21 Sept. | Sunny | 22° /13° | 0 mm | 6 | |
| 22 Sept. | Overcast | 21° /12° | 0 mm | 5 | |
| 23 Sept. | Patchy rain possible | 13° /10° | 2.8 mm | 3 | |
| 24 Sept. | Sunny | 20° /10° | 0 mm | 5 | |
| 25 Sept. |  Moderate or heavy rain shower | 18° /10° | 37.7 mm | 4 | |
| 26 Sept. | Mist | 20° /10° | 62.6 mm | 5 | |
| 27 Sept. | Mist | 20° /7° | 0 mm | 4 | |
| 28 Sept. | Mist | 22° /10° | 0 mm | 5 | |
| 29 Sept. | Mist | 22° /9° | 0 mm | 5 | |
| 30 Sept. | Mist | 21° /8° | 0 mm | 5 | |
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Montérégie in September - FAQ
What are the expected maximum and minimum temperatures in Montérégie during September?
How much rainfall should be expected in Montérégie during September?
What are the typical wind conditions in Montérégie during September?
September rainfall patterns in Montérégie
UV exposure in Montérégie during September
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