Photo: StuartMiles - Freerange Stock

St. Catharines Weather Forecast

For Saturday May 14, 2022
/ by
  • Tonight – A few clouds. Low 12.
  • Saturday – A mix of sun and cloud. 30 percent chance of showers late in the afternoon with risk of a thunderstorm. High 26 except 20 near Lake Ontario. Humidex 30. UV index 8 or very high.
  • Saturday Night – Mainly cloudy. 30 percent chance of showers early in the evening with risk of a thunderstorm. Low 11.