Mississauga
September
Weather in Mississauga for September 2025
Your guide to Mississauga weather in September - trends and predictions
In general, the average temperature in Mississauga at the beginning of September is 26.1 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 20.6 °C by the end of September.
Mississauga experiences moderate rainfall in September, with an average of 8 rainy days and a total precipitation of 45 mm.
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Temperatures
Rain 🌧️
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22
Dry days
8
Rainy days
0
Snow days
23°/15°
Temperatures
15 km/h
Avg max wind
70 %
Avg humidity
Mississauga in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  24° | 2  23° | 3  28° | 4 29° | 5  30° | 6 28° | 7  21° |
| 8  22° | 9 22° | 10 22° | 11 24° | 12 25° | 13 22° | 14 22° |
| 15  25° | 16 25° | 17 23° | 18 23° | 19 23° | 20 23° | 21 23° |
| 22 22° | 23 20° | 24 21° | 25 23° | 26 24° | 27 19° | 28 18° |
| 29 19° | 30 20° |
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Temperatures trend during September in Mississauga
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Partly cloudy | 24° /14° | 0.1 mm | 6 | |
| 2 Sept. | Mist | 23° /12° | 0.5 mm | 6 | |
| 3 Sept. | Thundery outbreaks possible | 28° /15° | 0.6 mm | 7 | |
| 4 Sept. | Partly cloudy | 29° /17° | 0 mm | 8 | |
| 5 Sept. | Cloudy | 30° /18° | 0 mm | 8 | |
| 6 Sept. | Thundery outbreaks possible | 28° /19° | 6.2 mm | 6 | |
| 7 Sept. | Light rain shower | 21° /14° | 5.7 mm | 5 | |
| 8 Sept. | Overcast | 22° /11° | 0 mm | 5 | |
| 9 Sept. | Overcast | 22° /12° | 1.1 mm | 5 | |
| 10 Sept. | Overcast | 22° /14° | 0 mm | 6 | |
| 11 Sept. | Patchy rain possible | 24° /15° | 0.1 mm | 6 | |
| 12 Sept. | Light rain shower | 25° /15° | 2.5 mm | 6 | |
| 13 Sept. | Overcast | 22° /13° | 0 mm | 6 | |
| 14 Sept. | Partly cloudy | 22° /13° | 0 mm | 6 | |
| 15 Sept. | Sunny | 25° /13° | 0 mm | 7 | |
| 16 Sept. | Mist | 25° /13° | 0 mm | 6 | |
| 17 Sept. | Thundery outbreaks possible | 23° /15° | 2.4 mm | 5 | |
| 18 Sept. | Mist | 23° /14° | 0 mm | 5 | |
| 19 Sept. | Cloudy | 23° /12° | 0 mm | 5 | |
| 20 Sept. | Cloudy | 23° /12° | 0 mm | 5 | |
| 21 Sept. | Overcast | 23° /16° | 0 mm | 5 | |
| 22 Sept. | Mist | 22° /16° | 0 mm | 5 | |
| 23 Sept. | Mist | 20° /16° | 7 mm | 5 | |
| 24 Sept. | Sunny | 21° /15° | 0 mm | 5 | |
| 25 Sept. | Overcast | 23° /16° | 16.4 mm | 5 | |
| 26 Sept. | Partly cloudy | 24° /15° | 0.8 mm | 6 | |
| 27 Sept. | Cloudy | 19° /12° | 0 mm | 5 | |
| 28 Sept. | Patchy rain possible | 18° /14° | 0 mm | 4 | |
| 29 Sept. | Overcast | 19° /16° | 1.6 mm | 5 | |
| 30 Sept. | Mist | 20° /14° | 0 mm | 5 | |
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Important Notice
Our weather forecast for Mississauga 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 Mississauga forecast closer to your planned date for the most up-to-date weather information.
Mississauga in September - FAQ
What are the expected maximum and minimum temperatures in Mississauga during September?
During September, expect a variety of temperatures with highs around 23° and lows near 15°, suitable for diverse activities and preferences.
How much rainfall should be expected in Mississauga during September?
In September, Mississauga can expect light to moderate rainfall, totaling 45 mm across approximately 8 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Mississauga during September?
The average wind speed in Mississauga during September is 15 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Mississauga
Explore the daily rainfall trends and prepare for Mississaugas September weather 💧
UV exposure in Mississauga during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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