The temperatures in Mississauga in October are quite cold with temperatures between 9°C and 15°C, warm clothes are a must.
You can expect rain for roughly half of the month of October in Mississauga. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Please note that Mississauga can expect a few days of snow in October.
Our weather forecast can give you a great sense of what weather to expect in Mississauga in October 2025.
If you’re planning to visit Mississauga in the near future, we highly recommend that you review the 14 day weather forecast for Mississauga before you arrive.
Temperatures
15° / 9°
Rainy Days
9
Snowy Days
1
Dry Days
21
Rainfall
145
mm
Sun Hours
8.0
Hrs
