St. Catharines Weather Forecast
For Wednesday May 25, 2022
- Tonight – A few clouds. Low 9.
- Wednesday – Increasing cloudiness near noon. High 24 except 17 along the lakeshore. Humidex 26. UV index 9 or very high.
- Wednesday Night – Partly cloudy with 30 percent chance of showers. Risk of a thunderstorm overnight. Low 15.
