The temperatures in Saint Catharines in October are usually low and can range between 10°C and 15°C.
You can expect rain for roughly half of the month of October in Saint Catharines. 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 Saint Catharines can expect a few days of snow in October.
Our weather forecast can give you a great sense of what weather to expect in Saint Catharines in October 2025.
If you’re planning to visit Saint Catharines in the near future, we highly recommend that you review the 14 day weather forecast for Saint Catharines before you arrive.
Temperatures
15° / 10°
Rainy Days
9
Snowy Days
1
Dry Days
22
Rainfall
135
mm
Sun Hours
4.9
Hrs
